./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 19:56:47,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:56:47,763 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:56:47,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:56:47,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:56:47,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:56:47,794 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:56:47,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:56:47,795 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:56:47,798 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:56:47,798 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:56:47,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:56:47,799 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:56:47,800 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:56:47,800 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:56:47,800 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:56:47,801 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:56:47,801 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:56:47,801 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:56:47,801 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:56:47,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:56:47,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:56:47,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:56:47,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:56:47,802 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:56:47,803 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:56:47,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:56:47,803 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:56:47,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:56:47,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:56:47,805 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:56:47,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:56:47,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:56:47,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:56:47,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:56:47,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:56:47,806 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:56:47,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:56:47,806 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:56:47,806 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:56:47,807 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:56:47,807 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:56:47,807 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:56:47,807 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:56:48,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:56:48,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:56:48,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:56:48,056 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:56:48,056 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:56:48,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-03 19:56:48,146 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:56:48,146 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:56:48,146 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-03 19:56:49,086 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:56:49,253 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:56:49,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-03 19:56:49,273 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf293a85/c7beac52f152425ca53d7d23e674e3c3/FLAGbaf2d988f [2024-06-03 19:56:49,289 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf293a85/c7beac52f152425ca53d7d23e674e3c3 [2024-06-03 19:56:49,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:56:49,291 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:56:49,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:56:49,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:56:49,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:56:49,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:56:48" (1/2) ... [2024-06-03 19:56:49,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51886c19 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:56:49, skipping insertion in model container [2024-06-03 19:56:49,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:56:48" (1/2) ... [2024-06-03 19:56:49,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ae9681a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:56:49, skipping insertion in model container [2024-06-03 19:56:49,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:56:49" (2/2) ... [2024-06-03 19:56:49,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51886c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49, skipping insertion in model container [2024-06-03 19:56:49,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:56:49" (2/2) ... [2024-06-03 19:56:49,302 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:56:49,363 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:56:49,365 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-03 19:56:49,365 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-03 19:56:49,365 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:56:49,365 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-03 19:56:49,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:56:49,735 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:56:49,743 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:56:49,871 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:56:49,901 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:56:49,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49 WrapperNode [2024-06-03 19:56:49,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:56:49,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:56:49,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:56:49,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:56:49,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49" (1/1) ... [2024-06-03 19:56:49,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49" (1/1) ... [2024-06-03 19:56:49,970 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 132 [2024-06-03 19:56:49,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:56:49,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:56:49,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:56:49,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:56:49,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49" (1/1) ... [2024-06-03 19:56:49,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49" (1/1) ... [2024-06-03 19:56:49,994 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49" (1/1) ... [2024-06-03 19:56:50,011 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-03 19:56:50,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49" (1/1) ... [2024-06-03 19:56:50,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49" (1/1) ... [2024-06-03 19:56:50,030 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49" (1/1) ... [2024-06-03 19:56:50,032 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49" (1/1) ... [2024-06-03 19:56:50,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49" (1/1) ... [2024-06-03 19:56:50,034 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49" (1/1) ... [2024-06-03 19:56:50,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:56:50,037 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:56:50,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:56:50,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:56:50,038 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49" (1/1) ... [2024-06-03 19:56:50,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:56:50,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:56:50,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-03 19:56:50,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-03 19:56:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:56:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:56:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 19:56:50,115 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 19:56:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 19:56:50,115 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 19:56:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:56:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:56:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:56:50,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:56:50,117 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:56:50,247 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:56:50,248 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:56:50,530 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:56:50,530 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:56:50,698 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:56:50,698 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 19:56:50,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:56:50 BoogieIcfgContainer [2024-06-03 19:56:50,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:56:50,700 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:56:50,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:56:50,702 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:56:50,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:56:48" (1/4) ... [2024-06-03 19:56:50,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d096c7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:56:50, skipping insertion in model container [2024-06-03 19:56:50,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:56:49" (2/4) ... [2024-06-03 19:56:50,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d096c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:56:50, skipping insertion in model container [2024-06-03 19:56:50,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:49" (3/4) ... [2024-06-03 19:56:50,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d096c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:56:50, skipping insertion in model container [2024-06-03 19:56:50,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:56:50" (4/4) ... [2024-06-03 19:56:50,705 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-03 19:56:50,718 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:56:50,718 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 19:56:50,718 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:56:50,753 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 19:56:50,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-03 19:56:50,810 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-03 19:56:50,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:56:50,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-03 19:56:50,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-03 19:56:50,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-03 19:56:50,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:56:50,832 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@655a74c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:56:50,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 19:56:50,843 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:56:50,843 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 19:56:50,843 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:56:50,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:50,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:56:50,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:56:50,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:50,849 INFO L85 PathProgramCache]: Analyzing trace with hash -429952030, now seen corresponding path program 1 times [2024-06-03 19:56:50,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:50,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786782353] [2024-06-03 19:56:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:50,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:51,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:51,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786782353] [2024-06-03 19:56:51,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786782353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:51,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:51,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:56:51,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153020228] [2024-06-03 19:56:51,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:51,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:56:51,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:51,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:56:51,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:56:51,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:56:51,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:51,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:51,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:56:51,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:51,841 INFO L124 PetriNetUnfolderBase]: 216/387 cut-off events. [2024-06-03 19:56:51,841 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-03 19:56:51,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 387 events. 216/387 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1364 event pairs, 133 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 776. Up to 378 conditions per place. [2024-06-03 19:56:51,846 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-03 19:56:51,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 125 flow [2024-06-03 19:56:51,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:56:51,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:56:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-03 19:56:51,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-03 19:56:51,858 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 48 transitions. [2024-06-03 19:56:51,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 125 flow [2024-06-03 19:56:51,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 19:56:51,862 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-03 19:56:51,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-03 19:56:51,866 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-03 19:56:51,866 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-03 19:56:51,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:51,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:51,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:51,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:56:51,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:56:51,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash -867008575, now seen corresponding path program 1 times [2024-06-03 19:56:51,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:51,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756989787] [2024-06-03 19:56:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:51,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:52,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:52,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756989787] [2024-06-03 19:56:52,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756989787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:52,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:52,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:56:52,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202519728] [2024-06-03 19:56:52,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:52,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:56:52,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:52,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:56:52,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:56:52,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:56:52,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:52,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:52,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:56:52,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:52,613 INFO L124 PetriNetUnfolderBase]: 213/382 cut-off events. [2024-06-03 19:56:52,613 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-03 19:56:52,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 382 events. 213/382 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1329 event pairs, 109 based on Foata normal form. 2/384 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-03 19:56:52,618 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-03 19:56:52,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 167 flow [2024-06-03 19:56:52,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:56:52,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:56:52,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-03 19:56:52,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-03 19:56:52,621 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 60 transitions. [2024-06-03 19:56:52,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 167 flow [2024-06-03 19:56:52,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:56:52,624 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-03 19:56:52,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-03 19:56:52,625 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-03 19:56:52,626 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-03 19:56:52,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:52,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:52,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:52,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:56:52,627 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:56:52,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:52,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1107460993, now seen corresponding path program 1 times [2024-06-03 19:56:52,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:52,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024500972] [2024-06-03 19:56:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:52,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:53,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:53,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024500972] [2024-06-03 19:56:53,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024500972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:53,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:53,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:56:53,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884447650] [2024-06-03 19:56:53,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:53,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:56:53,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:53,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:56:53,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:56:53,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:56:53,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:53,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:53,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:56:53,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:53,288 INFO L124 PetriNetUnfolderBase]: 214/384 cut-off events. [2024-06-03 19:56:53,288 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-06-03 19:56:53,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 384 events. 214/384 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 78 based on Foata normal form. 3/387 useless extension candidates. Maximal degree in co-relation 960. Up to 338 conditions per place. [2024-06-03 19:56:53,290 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2024-06-03 19:56:53,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 259 flow [2024-06-03 19:56:53,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:56:53,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:56:53,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-03 19:56:53,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-03 19:56:53,292 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 78 transitions. [2024-06-03 19:56:53,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 259 flow [2024-06-03 19:56:53,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 250 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 19:56:53,293 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 164 flow [2024-06-03 19:56:53,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-06-03 19:56:53,294 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-03 19:56:53,294 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 164 flow [2024-06-03 19:56:53,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:53,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:53,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:53,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:56:53,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:56:53,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:53,295 INFO L85 PathProgramCache]: Analyzing trace with hash 28448672, now seen corresponding path program 1 times [2024-06-03 19:56:53,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:53,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675750849] [2024-06-03 19:56:53,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:53,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:53,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:53,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675750849] [2024-06-03 19:56:53,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675750849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:53,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:53,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:56:53,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091826919] [2024-06-03 19:56:53,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:53,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:56:53,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:53,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:56:53,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:56:54,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:56:54,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:54,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:54,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:56:54,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:54,144 INFO L124 PetriNetUnfolderBase]: 215/386 cut-off events. [2024-06-03 19:56:54,144 INFO L125 PetriNetUnfolderBase]: For 474/474 co-relation queries the response was YES. [2024-06-03 19:56:54,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169 conditions, 386 events. 215/386 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1360 event pairs, 54 based on Foata normal form. 3/389 useless extension candidates. Maximal degree in co-relation 1149. Up to 327 conditions per place. [2024-06-03 19:56:54,146 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2024-06-03 19:56:54,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 344 flow [2024-06-03 19:56:54,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:56:54,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:56:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-06-03 19:56:54,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-06-03 19:56:54,147 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 164 flow. Second operand 6 states and 91 transitions. [2024-06-03 19:56:54,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 344 flow [2024-06-03 19:56:54,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 340 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-03 19:56:54,150 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 216 flow [2024-06-03 19:56:54,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-03 19:56:54,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-03 19:56:54,150 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 216 flow [2024-06-03 19:56:54,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:54,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:54,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:54,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:56:54,151 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:56:54,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:54,151 INFO L85 PathProgramCache]: Analyzing trace with hash -837623048, now seen corresponding path program 1 times [2024-06-03 19:56:54,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:54,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087015280] [2024-06-03 19:56:54,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:54,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:54,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:54,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087015280] [2024-06-03 19:56:54,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087015280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:54,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:54,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:56:54,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545196450] [2024-06-03 19:56:54,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:54,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:56:54,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:56:54,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:56:54,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:56:54,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:54,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:54,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:56:54,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:55,005 INFO L124 PetriNetUnfolderBase]: 216/389 cut-off events. [2024-06-03 19:56:55,005 INFO L125 PetriNetUnfolderBase]: For 724/724 co-relation queries the response was YES. [2024-06-03 19:56:55,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 389 events. 216/389 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1375 event pairs, 29 based on Foata normal form. 6/395 useless extension candidates. Maximal degree in co-relation 1288. Up to 304 conditions per place. [2024-06-03 19:56:55,008 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-06-03 19:56:55,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 390 flow [2024-06-03 19:56:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:56:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:56:55,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-03 19:56:55,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2024-06-03 19:56:55,009 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 216 flow. Second operand 7 states and 99 transitions. [2024-06-03 19:56:55,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 390 flow [2024-06-03 19:56:55,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 358 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 19:56:55,012 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 219 flow [2024-06-03 19:56:55,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=219, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-06-03 19:56:55,012 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-03 19:56:55,012 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 219 flow [2024-06-03 19:56:55,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:55,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:55,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:55,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:56:55,013 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:56:55,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:55,013 INFO L85 PathProgramCache]: Analyzing trace with hash 352855075, now seen corresponding path program 1 times [2024-06-03 19:56:55,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:55,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957926577] [2024-06-03 19:56:55,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:55,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:55,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:55,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957926577] [2024-06-03 19:56:55,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957926577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:55,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:55,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:56:55,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694592344] [2024-06-03 19:56:55,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:55,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:56:55,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:55,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:56:55,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:56:55,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:56:55,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:55,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:55,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:56:55,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:55,688 INFO L124 PetriNetUnfolderBase]: 214/386 cut-off events. [2024-06-03 19:56:55,689 INFO L125 PetriNetUnfolderBase]: For 861/861 co-relation queries the response was YES. [2024-06-03 19:56:55,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1364 conditions, 386 events. 214/386 cut-off events. For 861/861 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1362 event pairs, 56 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 1340. Up to 374 conditions per place. [2024-06-03 19:56:55,691 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 36 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2024-06-03 19:56:55,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 315 flow [2024-06-03 19:56:55,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:56:55,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:56:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-06-03 19:56:55,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-03 19:56:55,692 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 219 flow. Second operand 5 states and 56 transitions. [2024-06-03 19:56:55,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 315 flow [2024-06-03 19:56:55,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 274 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-03 19:56:55,694 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 195 flow [2024-06-03 19:56:55,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-06-03 19:56:55,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-03 19:56:55,694 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 195 flow [2024-06-03 19:56:55,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:55,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:55,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:55,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:56:55,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:56:55,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:55,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1958415161, now seen corresponding path program 1 times [2024-06-03 19:56:55,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:55,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092195344] [2024-06-03 19:56:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:55,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:56,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:56,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092195344] [2024-06-03 19:56:56,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092195344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:56,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:56,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:56:56,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420203271] [2024-06-03 19:56:56,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:56,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:56:56,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:56,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:56:56,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:56:56,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:56:56,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:56,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:56,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:56:56,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:56,422 INFO L124 PetriNetUnfolderBase]: 212/383 cut-off events. [2024-06-03 19:56:56,422 INFO L125 PetriNetUnfolderBase]: For 1031/1031 co-relation queries the response was YES. [2024-06-03 19:56:56,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 383 events. 212/383 cut-off events. For 1031/1031 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 55 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1300. Up to 368 conditions per place. [2024-06-03 19:56:56,424 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 37 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-03 19:56:56,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 307 flow [2024-06-03 19:56:56,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:56:56,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:56:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-03 19:56:56,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 19:56:56,425 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 195 flow. Second operand 6 states and 64 transitions. [2024-06-03 19:56:56,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 307 flow [2024-06-03 19:56:56,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 292 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-03 19:56:56,427 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 213 flow [2024-06-03 19:56:56,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-03 19:56:56,428 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-03 19:56:56,428 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 213 flow [2024-06-03 19:56:56,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:56,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:56,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:56,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:56:56,428 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:56:56,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:56,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1946918748, now seen corresponding path program 1 times [2024-06-03 19:56:56,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:56,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985870837] [2024-06-03 19:56:56,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:56,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:56,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:56,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985870837] [2024-06-03 19:56:56,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985870837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:56,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:56,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:56:56,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423248888] [2024-06-03 19:56:56,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:56,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:56:56,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:56,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:56:56,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:56:56,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:56:56,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:56,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:56,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:56:56,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:57,100 INFO L124 PetriNetUnfolderBase]: 213/385 cut-off events. [2024-06-03 19:56:57,101 INFO L125 PetriNetUnfolderBase]: For 1275/1275 co-relation queries the response was YES. [2024-06-03 19:56:57,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 385 events. 213/385 cut-off events. For 1275/1275 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1367 event pairs, 54 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 1381. Up to 339 conditions per place. [2024-06-03 19:56:57,103 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-06-03 19:56:57,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 366 flow [2024-06-03 19:56:57,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:56:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:56:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-03 19:56:57,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:56:57,104 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 213 flow. Second operand 6 states and 72 transitions. [2024-06-03 19:56:57,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 366 flow [2024-06-03 19:56:57,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 349 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 19:56:57,106 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 244 flow [2024-06-03 19:56:57,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-06-03 19:56:57,107 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-03 19:56:57,107 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 244 flow [2024-06-03 19:56:57,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:57,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:57,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:57,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:56:57,107 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:56:57,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:57,108 INFO L85 PathProgramCache]: Analyzing trace with hash -208648830, now seen corresponding path program 2 times [2024-06-03 19:56:57,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:57,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068971743] [2024-06-03 19:56:57,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:57,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:57,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:57,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068971743] [2024-06-03 19:56:57,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068971743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:57,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:57,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:56:57,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488135576] [2024-06-03 19:56:57,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:57,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:56:57,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:57,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:56:57,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:56:57,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:56:57,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 244 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:57,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:57,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:56:57,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:57,777 INFO L124 PetriNetUnfolderBase]: 208/375 cut-off events. [2024-06-03 19:56:57,777 INFO L125 PetriNetUnfolderBase]: For 1514/1514 co-relation queries the response was YES. [2024-06-03 19:56:57,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 375 events. 208/375 cut-off events. For 1514/1514 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1322 event pairs, 53 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1402. Up to 360 conditions per place. [2024-06-03 19:56:57,779 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 39 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2024-06-03 19:56:57,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 49 transitions, 352 flow [2024-06-03 19:56:57,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:56:57,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:56:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-03 19:56:57,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 19:56:57,780 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 244 flow. Second operand 6 states and 64 transitions. [2024-06-03 19:56:57,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 49 transitions, 352 flow [2024-06-03 19:56:57,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 337 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-03 19:56:57,783 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 250 flow [2024-06-03 19:56:57,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-06-03 19:56:57,784 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-03 19:56:57,784 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 250 flow [2024-06-03 19:56:57,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:57,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:57,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:57,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:56:57,784 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:56:57,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:57,784 INFO L85 PathProgramCache]: Analyzing trace with hash -581326304, now seen corresponding path program 1 times [2024-06-03 19:56:57,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:57,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62303405] [2024-06-03 19:56:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:57,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:58,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:58,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62303405] [2024-06-03 19:56:58,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62303405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:58,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:58,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:56:58,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438713550] [2024-06-03 19:56:58,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:58,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:56:58,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:58,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:56:58,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:56:58,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:56:58,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:58,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:58,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:56:58,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:58,861 INFO L124 PetriNetUnfolderBase]: 206/372 cut-off events. [2024-06-03 19:56:58,861 INFO L125 PetriNetUnfolderBase]: For 1810/1810 co-relation queries the response was YES. [2024-06-03 19:56:58,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 372 events. 206/372 cut-off events. For 1810/1810 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1301 event pairs, 52 based on Foata normal form. 1/373 useless extension candidates. Maximal degree in co-relation 1420. Up to 354 conditions per place. [2024-06-03 19:56:58,863 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 40 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2024-06-03 19:56:58,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 376 flow [2024-06-03 19:56:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:56:58,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:56:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-03 19:56:58,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-03 19:56:58,865 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 250 flow. Second operand 7 states and 72 transitions. [2024-06-03 19:56:58,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 376 flow [2024-06-03 19:56:58,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 342 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 19:56:58,868 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 255 flow [2024-06-03 19:56:58,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-03 19:56:58,869 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-03 19:56:58,869 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 255 flow [2024-06-03 19:56:58,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:58,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:58,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:58,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:56:58,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:56:58,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:58,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1727514464, now seen corresponding path program 1 times [2024-06-03 19:56:58,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:58,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11691866] [2024-06-03 19:56:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:58,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:59,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:59,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:59,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11691866] [2024-06-03 19:56:59,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11691866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:59,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:59,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:56:59,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359271075] [2024-06-03 19:56:59,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:59,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:56:59,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:59,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:56:59,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:56:59,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:56:59,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:59,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:59,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:56:59,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:59,588 INFO L124 PetriNetUnfolderBase]: 221/397 cut-off events. [2024-06-03 19:56:59,588 INFO L125 PetriNetUnfolderBase]: For 2282/2282 co-relation queries the response was YES. [2024-06-03 19:56:59,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 397 events. 221/397 cut-off events. For 2282/2282 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1410 event pairs, 50 based on Foata normal form. 3/400 useless extension candidates. Maximal degree in co-relation 1554. Up to 296 conditions per place. [2024-06-03 19:56:59,590 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 45 selfloop transitions, 21 changer transitions 0/68 dead transitions. [2024-06-03 19:56:59,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 68 transitions, 507 flow [2024-06-03 19:56:59,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:56:59,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:56:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-03 19:56:59,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-03 19:56:59,591 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 255 flow. Second operand 7 states and 88 transitions. [2024-06-03 19:56:59,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 68 transitions, 507 flow [2024-06-03 19:56:59,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 484 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 19:56:59,595 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 343 flow [2024-06-03 19:56:59,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-03 19:56:59,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-03 19:56:59,595 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 343 flow [2024-06-03 19:56:59,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:59,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:59,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:59,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 19:56:59,596 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:56:59,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:59,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2122059524, now seen corresponding path program 2 times [2024-06-03 19:56:59,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:59,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201388521] [2024-06-03 19:56:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:59,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:00,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:00,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201388521] [2024-06-03 19:57:00,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201388521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:00,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:00,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:00,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646810232] [2024-06-03 19:57:00,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:00,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:00,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:00,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:00,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:00,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:00,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 343 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:00,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:00,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:00,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:00,399 INFO L124 PetriNetUnfolderBase]: 224/402 cut-off events. [2024-06-03 19:57:00,399 INFO L125 PetriNetUnfolderBase]: For 2691/2691 co-relation queries the response was YES. [2024-06-03 19:57:00,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 402 events. 224/402 cut-off events. For 2691/2691 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1422 event pairs, 49 based on Foata normal form. 1/403 useless extension candidates. Maximal degree in co-relation 1752. Up to 384 conditions per place. [2024-06-03 19:57:00,402 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 51 selfloop transitions, 10 changer transitions 0/63 dead transitions. [2024-06-03 19:57:00,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 495 flow [2024-06-03 19:57:00,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:00,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-03 19:57:00,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-03 19:57:00,403 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 343 flow. Second operand 7 states and 72 transitions. [2024-06-03 19:57:00,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 495 flow [2024-06-03 19:57:00,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 478 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-03 19:57:00,407 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 369 flow [2024-06-03 19:57:00,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=369, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2024-06-03 19:57:00,407 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-03 19:57:00,407 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 369 flow [2024-06-03 19:57:00,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:00,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:00,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:00,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 19:57:00,408 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:00,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash -841490744, now seen corresponding path program 3 times [2024-06-03 19:57:00,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:00,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678659407] [2024-06-03 19:57:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:00,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:00,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:00,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:00,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678659407] [2024-06-03 19:57:00,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678659407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:00,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:00,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:00,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401541193] [2024-06-03 19:57:00,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:00,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:00,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:00,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:00,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:01,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:01,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 369 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:01,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:01,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:01,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:01,210 INFO L124 PetriNetUnfolderBase]: 222/399 cut-off events. [2024-06-03 19:57:01,210 INFO L125 PetriNetUnfolderBase]: For 3168/3168 co-relation queries the response was YES. [2024-06-03 19:57:01,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 399 events. 222/399 cut-off events. For 3168/3168 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1419 event pairs, 49 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 1799. Up to 375 conditions per place. [2024-06-03 19:57:01,213 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 13 changer transitions 0/65 dead transitions. [2024-06-03 19:57:01,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 529 flow [2024-06-03 19:57:01,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:01,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-03 19:57:01,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33035714285714285 [2024-06-03 19:57:01,214 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 369 flow. Second operand 7 states and 74 transitions. [2024-06-03 19:57:01,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 529 flow [2024-06-03 19:57:01,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 504 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:01,218 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 397 flow [2024-06-03 19:57:01,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-06-03 19:57:01,218 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-03 19:57:01,218 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 397 flow [2024-06-03 19:57:01,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:01,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:01,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:01,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 19:57:01,219 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:01,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:01,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1734189632, now seen corresponding path program 1 times [2024-06-03 19:57:01,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:01,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553299003] [2024-06-03 19:57:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:01,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:02,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:02,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553299003] [2024-06-03 19:57:02,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553299003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:02,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:02,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:02,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134586790] [2024-06-03 19:57:02,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:02,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:02,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:02,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:02,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:02,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:02,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 397 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:02,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:02,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:02,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:02,504 INFO L124 PetriNetUnfolderBase]: 218/393 cut-off events. [2024-06-03 19:57:02,505 INFO L125 PetriNetUnfolderBase]: For 3641/3641 co-relation queries the response was YES. [2024-06-03 19:57:02,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 393 events. 218/393 cut-off events. For 3641/3641 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1379 event pairs, 47 based on Foata normal form. 2/395 useless extension candidates. Maximal degree in co-relation 1815. Up to 369 conditions per place. [2024-06-03 19:57:02,507 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 55 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2024-06-03 19:57:02,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 69 transitions, 563 flow [2024-06-03 19:57:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-03 19:57:02,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-03 19:57:02,508 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 397 flow. Second operand 8 states and 81 transitions. [2024-06-03 19:57:02,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 69 transitions, 563 flow [2024-06-03 19:57:02,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 528 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:02,512 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 407 flow [2024-06-03 19:57:02,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=407, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-06-03 19:57:02,512 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-03 19:57:02,512 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 407 flow [2024-06-03 19:57:02,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:02,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:02,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:02,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 19:57:02,513 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:02,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:02,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1613057411, now seen corresponding path program 1 times [2024-06-03 19:57:02,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:02,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308298924] [2024-06-03 19:57:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:02,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:03,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:03,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308298924] [2024-06-03 19:57:03,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308298924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:03,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:03,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:03,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058461544] [2024-06-03 19:57:03,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:03,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:03,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:03,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:03,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:03,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:03,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 407 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:03,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:03,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:03,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:03,378 INFO L124 PetriNetUnfolderBase]: 271/484 cut-off events. [2024-06-03 19:57:03,378 INFO L125 PetriNetUnfolderBase]: For 4514/4514 co-relation queries the response was YES. [2024-06-03 19:57:03,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2350 conditions, 484 events. 271/484 cut-off events. For 4514/4514 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1835 event pairs, 103 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 2315. Up to 396 conditions per place. [2024-06-03 19:57:03,381 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 67 selfloop transitions, 26 changer transitions 0/95 dead transitions. [2024-06-03 19:57:03,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 864 flow [2024-06-03 19:57:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:03,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-03 19:57:03,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-03 19:57:03,383 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 407 flow. Second operand 8 states and 89 transitions. [2024-06-03 19:57:03,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 864 flow [2024-06-03 19:57:03,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 95 transitions, 833 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:03,389 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 620 flow [2024-06-03 19:57:03,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=620, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-06-03 19:57:03,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-03 19:57:03,390 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 620 flow [2024-06-03 19:57:03,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:03,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:03,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:03,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 19:57:03,390 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:03,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1088269625, now seen corresponding path program 2 times [2024-06-03 19:57:03,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:03,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832974563] [2024-06-03 19:57:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:03,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:04,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832974563] [2024-06-03 19:57:04,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832974563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:04,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:04,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:04,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508373131] [2024-06-03 19:57:04,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:04,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:04,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:04,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:04,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:04,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:04,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 620 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:04,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:04,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:04,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:04,301 INFO L124 PetriNetUnfolderBase]: 278/496 cut-off events. [2024-06-03 19:57:04,301 INFO L125 PetriNetUnfolderBase]: For 5305/5305 co-relation queries the response was YES. [2024-06-03 19:57:04,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2614 conditions, 496 events. 278/496 cut-off events. For 5305/5305 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1890 event pairs, 50 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 2575. Up to 420 conditions per place. [2024-06-03 19:57:04,306 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 75 selfloop transitions, 25 changer transitions 0/102 dead transitions. [2024-06-03 19:57:04,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 102 transitions, 958 flow [2024-06-03 19:57:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-03 19:57:04,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-03 19:57:04,308 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 620 flow. Second operand 9 states and 100 transitions. [2024-06-03 19:57:04,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 102 transitions, 958 flow [2024-06-03 19:57:04,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 102 transitions, 946 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-03 19:57:04,316 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 804 flow [2024-06-03 19:57:04,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=804, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2024-06-03 19:57:04,317 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-03 19:57:04,317 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 804 flow [2024-06-03 19:57:04,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:04,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:04,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:04,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 19:57:04,318 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:04,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:04,318 INFO L85 PathProgramCache]: Analyzing trace with hash -822182817, now seen corresponding path program 3 times [2024-06-03 19:57:04,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:04,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616341430] [2024-06-03 19:57:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:04,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:04,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:04,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616341430] [2024-06-03 19:57:04,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616341430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:04,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:04,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:57:04,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434859775] [2024-06-03 19:57:04,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:04,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:57:04,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:04,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:57:04,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:57:04,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:57:04,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 804 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:04,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:04,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:57:04,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:05,060 INFO L124 PetriNetUnfolderBase]: 266/486 cut-off events. [2024-06-03 19:57:05,060 INFO L125 PetriNetUnfolderBase]: For 6601/6602 co-relation queries the response was YES. [2024-06-03 19:57:05,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 486 events. 266/486 cut-off events. For 6601/6602 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1908 event pairs, 51 based on Foata normal form. 2/484 useless extension candidates. Maximal degree in co-relation 2691. Up to 320 conditions per place. [2024-06-03 19:57:05,064 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 39 changer transitions 0/109 dead transitions. [2024-06-03 19:57:05,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 109 transitions, 1152 flow [2024-06-03 19:57:05,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:05,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-03 19:57:05,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-03 19:57:05,065 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 804 flow. Second operand 7 states and 93 transitions. [2024-06-03 19:57:05,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 109 transitions, 1152 flow [2024-06-03 19:57:05,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 109 transitions, 1107 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-03 19:57:05,074 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 930 flow [2024-06-03 19:57:05,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=930, PETRI_PLACES=91, PETRI_TRANSITIONS=96} [2024-06-03 19:57:05,075 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-03 19:57:05,075 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 930 flow [2024-06-03 19:57:05,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:05,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:05,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:05,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 19:57:05,075 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:05,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:05,076 INFO L85 PathProgramCache]: Analyzing trace with hash 798106599, now seen corresponding path program 1 times [2024-06-03 19:57:05,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:05,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646465361] [2024-06-03 19:57:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:05,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:05,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:05,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646465361] [2024-06-03 19:57:05,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646465361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:05,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:05,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:05,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121504729] [2024-06-03 19:57:05,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:05,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:05,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:05,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:05,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:05,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:05,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 930 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:05,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:05,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:05,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:06,123 INFO L124 PetriNetUnfolderBase]: 306/542 cut-off events. [2024-06-03 19:57:06,124 INFO L125 PetriNetUnfolderBase]: For 7657/7657 co-relation queries the response was YES. [2024-06-03 19:57:06,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3135 conditions, 542 events. 306/542 cut-off events. For 7657/7657 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2105 event pairs, 57 based on Foata normal form. 3/545 useless extension candidates. Maximal degree in co-relation 3087. Up to 301 conditions per place. [2024-06-03 19:57:06,127 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 78 selfloop transitions, 44 changer transitions 0/124 dead transitions. [2024-06-03 19:57:06,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 124 transitions, 1405 flow [2024-06-03 19:57:06,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:06,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-03 19:57:06,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-03 19:57:06,129 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 930 flow. Second operand 9 states and 116 transitions. [2024-06-03 19:57:06,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 124 transitions, 1405 flow [2024-06-03 19:57:06,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 124 transitions, 1345 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-03 19:57:06,140 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 1039 flow [2024-06-03 19:57:06,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1039, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-06-03 19:57:06,141 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-03 19:57:06,141 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 1039 flow [2024-06-03 19:57:06,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:06,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:06,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:06,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 19:57:06,141 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:06,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:06,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1480016870, now seen corresponding path program 1 times [2024-06-03 19:57:06,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:06,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650317596] [2024-06-03 19:57:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:06,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:06,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:06,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650317596] [2024-06-03 19:57:06,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650317596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:06,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:06,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:06,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401727848] [2024-06-03 19:57:06,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:06,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:06,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:06,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:06,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:06,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:06,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 1039 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:06,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:06,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:06,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:06,930 INFO L124 PetriNetUnfolderBase]: 320/566 cut-off events. [2024-06-03 19:57:06,930 INFO L125 PetriNetUnfolderBase]: For 8049/8049 co-relation queries the response was YES. [2024-06-03 19:57:06,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3361 conditions, 566 events. 320/566 cut-off events. For 8049/8049 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2235 event pairs, 57 based on Foata normal form. 2/568 useless extension candidates. Maximal degree in co-relation 3312. Up to 380 conditions per place. [2024-06-03 19:57:06,934 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 44 changer transitions 0/128 dead transitions. [2024-06-03 19:57:06,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 128 transitions, 1499 flow [2024-06-03 19:57:06,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:06,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-03 19:57:06,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-03 19:57:06,936 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 1039 flow. Second operand 8 states and 101 transitions. [2024-06-03 19:57:06,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 128 transitions, 1499 flow [2024-06-03 19:57:06,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 128 transitions, 1460 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-03 19:57:06,947 INFO L231 Difference]: Finished difference. Result has 105 places, 113 transitions, 1213 flow [2024-06-03 19:57:06,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1213, PETRI_PLACES=105, PETRI_TRANSITIONS=113} [2024-06-03 19:57:06,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-03 19:57:06,948 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 113 transitions, 1213 flow [2024-06-03 19:57:06,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:06,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:06,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:06,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 19:57:06,948 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:06,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:06,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1479762980, now seen corresponding path program 2 times [2024-06-03 19:57:06,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:06,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484557011] [2024-06-03 19:57:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:06,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:07,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:07,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484557011] [2024-06-03 19:57:07,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484557011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:07,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:07,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:07,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575441075] [2024-06-03 19:57:07,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:07,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:07,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:07,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:07,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:07,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:07,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 113 transitions, 1213 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:07,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:07,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:07,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:07,728 INFO L124 PetriNetUnfolderBase]: 318/563 cut-off events. [2024-06-03 19:57:07,728 INFO L125 PetriNetUnfolderBase]: For 9031/9031 co-relation queries the response was YES. [2024-06-03 19:57:07,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3540 conditions, 563 events. 318/563 cut-off events. For 9031/9031 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2232 event pairs, 60 based on Foata normal form. 1/564 useless extension candidates. Maximal degree in co-relation 3487. Up to 379 conditions per place. [2024-06-03 19:57:07,732 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 79 selfloop transitions, 46 changer transitions 0/127 dead transitions. [2024-06-03 19:57:07,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 127 transitions, 1591 flow [2024-06-03 19:57:07,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:07,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-03 19:57:07,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-03 19:57:07,733 INFO L175 Difference]: Start difference. First operand has 105 places, 113 transitions, 1213 flow. Second operand 8 states and 98 transitions. [2024-06-03 19:57:07,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 127 transitions, 1591 flow [2024-06-03 19:57:07,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 127 transitions, 1516 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:07,748 INFO L231 Difference]: Finished difference. Result has 109 places, 115 transitions, 1263 flow [2024-06-03 19:57:07,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1263, PETRI_PLACES=109, PETRI_TRANSITIONS=115} [2024-06-03 19:57:07,749 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-03 19:57:07,749 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 115 transitions, 1263 flow [2024-06-03 19:57:07,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:07,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:07,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:07,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 19:57:07,749 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:07,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:07,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1516242591, now seen corresponding path program 4 times [2024-06-03 19:57:07,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:07,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568685214] [2024-06-03 19:57:07,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:07,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:08,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:08,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568685214] [2024-06-03 19:57:08,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568685214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:08,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:08,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:08,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405180018] [2024-06-03 19:57:08,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:08,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:08,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:08,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:08,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:08,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:08,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 115 transitions, 1263 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:08,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:08,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:08,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:08,555 INFO L124 PetriNetUnfolderBase]: 316/560 cut-off events. [2024-06-03 19:57:08,556 INFO L125 PetriNetUnfolderBase]: For 9742/9742 co-relation queries the response was YES. [2024-06-03 19:57:08,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3545 conditions, 560 events. 316/560 cut-off events. For 9742/9742 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2219 event pairs, 51 based on Foata normal form. 2/562 useless extension candidates. Maximal degree in co-relation 3491. Up to 444 conditions per place. [2024-06-03 19:57:08,560 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 87 selfloop transitions, 40 changer transitions 0/129 dead transitions. [2024-06-03 19:57:08,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 129 transitions, 1644 flow [2024-06-03 19:57:08,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-03 19:57:08,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:57:08,562 INFO L175 Difference]: Start difference. First operand has 109 places, 115 transitions, 1263 flow. Second operand 7 states and 84 transitions. [2024-06-03 19:57:08,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 129 transitions, 1644 flow [2024-06-03 19:57:08,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 129 transitions, 1534 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:08,577 INFO L231 Difference]: Finished difference. Result has 113 places, 120 transitions, 1362 flow [2024-06-03 19:57:08,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1362, PETRI_PLACES=113, PETRI_TRANSITIONS=120} [2024-06-03 19:57:08,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-03 19:57:08,578 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 120 transitions, 1362 flow [2024-06-03 19:57:08,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:08,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:08,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:08,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 19:57:08,579 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:08,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:08,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1512523366, now seen corresponding path program 3 times [2024-06-03 19:57:08,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:08,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718407974] [2024-06-03 19:57:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:08,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:09,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:09,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718407974] [2024-06-03 19:57:09,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718407974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:09,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:09,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:09,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583219870] [2024-06-03 19:57:09,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:09,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:09,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:09,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:09,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:09,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:09,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 120 transitions, 1362 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:09,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:09,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:09,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:09,284 INFO L124 PetriNetUnfolderBase]: 317/564 cut-off events. [2024-06-03 19:57:09,284 INFO L125 PetriNetUnfolderBase]: For 10597/10597 co-relation queries the response was YES. [2024-06-03 19:57:09,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3634 conditions, 564 events. 317/564 cut-off events. For 10597/10597 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2249 event pairs, 70 based on Foata normal form. 2/566 useless extension candidates. Maximal degree in co-relation 3577. Up to 376 conditions per place. [2024-06-03 19:57:09,289 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 62 changer transitions 0/134 dead transitions. [2024-06-03 19:57:09,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 134 transitions, 1739 flow [2024-06-03 19:57:09,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:09,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:09,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-03 19:57:09,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-03 19:57:09,290 INFO L175 Difference]: Start difference. First operand has 113 places, 120 transitions, 1362 flow. Second operand 7 states and 89 transitions. [2024-06-03 19:57:09,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 134 transitions, 1739 flow [2024-06-03 19:57:09,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 134 transitions, 1707 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 19:57:09,307 INFO L231 Difference]: Finished difference. Result has 117 places, 122 transitions, 1501 flow [2024-06-03 19:57:09,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1501, PETRI_PLACES=117, PETRI_TRANSITIONS=122} [2024-06-03 19:57:09,307 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-03 19:57:09,307 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 122 transitions, 1501 flow [2024-06-03 19:57:09,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:09,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:09,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:09,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 19:57:09,308 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:09,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:09,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1512517569, now seen corresponding path program 2 times [2024-06-03 19:57:09,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:09,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881359617] [2024-06-03 19:57:09,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:09,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:10,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:10,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881359617] [2024-06-03 19:57:10,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881359617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:10,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:10,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:10,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441427557] [2024-06-03 19:57:10,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:10,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:10,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:10,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:10,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:10,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:10,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 122 transitions, 1501 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:10,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:10,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:10,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:10,339 INFO L124 PetriNetUnfolderBase]: 323/572 cut-off events. [2024-06-03 19:57:10,339 INFO L125 PetriNetUnfolderBase]: For 11716/11716 co-relation queries the response was YES. [2024-06-03 19:57:10,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3822 conditions, 572 events. 323/572 cut-off events. For 11716/11716 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2283 event pairs, 53 based on Foata normal form. 2/574 useless extension candidates. Maximal degree in co-relation 3764. Up to 424 conditions per place. [2024-06-03 19:57:10,350 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 97 selfloop transitions, 41 changer transitions 0/140 dead transitions. [2024-06-03 19:57:10,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 140 transitions, 1922 flow [2024-06-03 19:57:10,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:10,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-03 19:57:10,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 19:57:10,352 INFO L175 Difference]: Start difference. First operand has 117 places, 122 transitions, 1501 flow. Second operand 8 states and 94 transitions. [2024-06-03 19:57:10,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 140 transitions, 1922 flow [2024-06-03 19:57:10,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 140 transitions, 1787 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:10,375 INFO L231 Difference]: Finished difference. Result has 121 places, 129 transitions, 1559 flow [2024-06-03 19:57:10,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1559, PETRI_PLACES=121, PETRI_TRANSITIONS=129} [2024-06-03 19:57:10,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-03 19:57:10,376 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 129 transitions, 1559 flow [2024-06-03 19:57:10,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:10,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:10,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:10,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 19:57:10,377 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:10,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:10,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1512517786, now seen corresponding path program 4 times [2024-06-03 19:57:10,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:10,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562888186] [2024-06-03 19:57:10,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:10,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:10,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:10,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562888186] [2024-06-03 19:57:10,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562888186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:10,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:10,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:10,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643698894] [2024-06-03 19:57:10,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:10,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:10,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:10,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:10,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:10,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:10,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 129 transitions, 1559 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:10,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:10,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:10,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:11,126 INFO L124 PetriNetUnfolderBase]: 326/577 cut-off events. [2024-06-03 19:57:11,126 INFO L125 PetriNetUnfolderBase]: For 12382/12382 co-relation queries the response was YES. [2024-06-03 19:57:11,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3966 conditions, 577 events. 326/577 cut-off events. For 12382/12382 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2310 event pairs, 60 based on Foata normal form. 1/578 useless extension candidates. Maximal degree in co-relation 3906. Up to 388 conditions per place. [2024-06-03 19:57:11,131 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 76 selfloop transitions, 62 changer transitions 0/140 dead transitions. [2024-06-03 19:57:11,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 140 transitions, 1935 flow [2024-06-03 19:57:11,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:11,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:11,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-03 19:57:11,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:57:11,132 INFO L175 Difference]: Start difference. First operand has 121 places, 129 transitions, 1559 flow. Second operand 7 states and 84 transitions. [2024-06-03 19:57:11,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 140 transitions, 1935 flow [2024-06-03 19:57:11,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 140 transitions, 1878 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:11,153 INFO L231 Difference]: Finished difference. Result has 124 places, 131 transitions, 1671 flow [2024-06-03 19:57:11,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1671, PETRI_PLACES=124, PETRI_TRANSITIONS=131} [2024-06-03 19:57:11,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-03 19:57:11,154 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 131 transitions, 1671 flow [2024-06-03 19:57:11,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:11,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:11,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:11,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 19:57:11,155 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:11,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:11,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1351985697, now seen corresponding path program 3 times [2024-06-03 19:57:11,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:11,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268223496] [2024-06-03 19:57:11,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:11,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:11,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:11,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268223496] [2024-06-03 19:57:11,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268223496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:11,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:11,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:11,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561438410] [2024-06-03 19:57:11,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:11,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:11,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:11,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:11,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:11,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:11,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 131 transitions, 1671 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:11,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:11,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:11,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:12,169 INFO L124 PetriNetUnfolderBase]: 329/582 cut-off events. [2024-06-03 19:57:12,169 INFO L125 PetriNetUnfolderBase]: For 13397/13397 co-relation queries the response was YES. [2024-06-03 19:57:12,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 582 events. 329/582 cut-off events. For 13397/13397 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2317 event pairs, 102 based on Foata normal form. 1/583 useless extension candidates. Maximal degree in co-relation 4086. Up to 543 conditions per place. [2024-06-03 19:57:12,173 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 123 selfloop transitions, 18 changer transitions 0/143 dead transitions. [2024-06-03 19:57:12,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 143 transitions, 2067 flow [2024-06-03 19:57:12,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:12,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-03 19:57:12,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33203125 [2024-06-03 19:57:12,174 INFO L175 Difference]: Start difference. First operand has 124 places, 131 transitions, 1671 flow. Second operand 8 states and 85 transitions. [2024-06-03 19:57:12,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 143 transitions, 2067 flow [2024-06-03 19:57:12,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 143 transitions, 1979 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:12,195 INFO L231 Difference]: Finished difference. Result has 128 places, 135 transitions, 1678 flow [2024-06-03 19:57:12,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1583, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1678, PETRI_PLACES=128, PETRI_TRANSITIONS=135} [2024-06-03 19:57:12,196 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-03 19:57:12,196 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 135 transitions, 1678 flow [2024-06-03 19:57:12,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:12,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:12,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:12,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 19:57:12,197 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:12,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:12,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2074971698, now seen corresponding path program 5 times [2024-06-03 19:57:12,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:12,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642957906] [2024-06-03 19:57:12,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:12,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:12,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:12,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:12,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642957906] [2024-06-03 19:57:12,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642957906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:12,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:12,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:12,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684824425] [2024-06-03 19:57:12,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:12,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:12,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:12,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:12,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:12,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:12,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 135 transitions, 1678 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:12,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:12,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:12,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:12,922 INFO L124 PetriNetUnfolderBase]: 327/579 cut-off events. [2024-06-03 19:57:12,923 INFO L125 PetriNetUnfolderBase]: For 14126/14126 co-relation queries the response was YES. [2024-06-03 19:57:12,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4064 conditions, 579 events. 327/579 cut-off events. For 14126/14126 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2293 event pairs, 103 based on Foata normal form. 1/580 useless extension candidates. Maximal degree in co-relation 4001. Up to 555 conditions per place. [2024-06-03 19:57:12,927 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 127 selfloop transitions, 12 changer transitions 0/141 dead transitions. [2024-06-03 19:57:12,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 141 transitions, 1970 flow [2024-06-03 19:57:12,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:12,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-03 19:57:12,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32589285714285715 [2024-06-03 19:57:12,929 INFO L175 Difference]: Start difference. First operand has 128 places, 135 transitions, 1678 flow. Second operand 7 states and 73 transitions. [2024-06-03 19:57:12,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 141 transitions, 1970 flow [2024-06-03 19:57:12,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 141 transitions, 1936 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:12,953 INFO L231 Difference]: Finished difference. Result has 131 places, 135 transitions, 1673 flow [2024-06-03 19:57:12,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1673, PETRI_PLACES=131, PETRI_TRANSITIONS=135} [2024-06-03 19:57:12,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-03 19:57:12,953 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 135 transitions, 1673 flow [2024-06-03 19:57:12,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:12,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:12,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:12,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 19:57:12,954 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:12,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:12,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1359604257, now seen corresponding path program 4 times [2024-06-03 19:57:12,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:12,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181029931] [2024-06-03 19:57:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:12,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:13,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:13,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181029931] [2024-06-03 19:57:13,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181029931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:13,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:13,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:13,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160379383] [2024-06-03 19:57:13,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:13,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:13,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:13,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:13,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:13,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:13,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 135 transitions, 1673 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:13,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:13,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:13,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:14,024 INFO L124 PetriNetUnfolderBase]: 330/584 cut-off events. [2024-06-03 19:57:14,025 INFO L125 PetriNetUnfolderBase]: For 14984/14984 co-relation queries the response was YES. [2024-06-03 19:57:14,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 584 events. 330/584 cut-off events. For 14984/14984 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2352 event pairs, 102 based on Foata normal form. 1/585 useless extension candidates. Maximal degree in co-relation 4074. Up to 560 conditions per place. [2024-06-03 19:57:14,029 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 129 selfloop transitions, 13 changer transitions 0/144 dead transitions. [2024-06-03 19:57:14,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 144 transitions, 2002 flow [2024-06-03 19:57:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-03 19:57:14,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-03 19:57:14,030 INFO L175 Difference]: Start difference. First operand has 131 places, 135 transitions, 1673 flow. Second operand 8 states and 80 transitions. [2024-06-03 19:57:14,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 144 transitions, 2002 flow [2024-06-03 19:57:14,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 144 transitions, 1930 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:14,055 INFO L231 Difference]: Finished difference. Result has 133 places, 137 transitions, 1665 flow [2024-06-03 19:57:14,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1601, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1665, PETRI_PLACES=133, PETRI_TRANSITIONS=137} [2024-06-03 19:57:14,055 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-03 19:57:14,056 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 137 transitions, 1665 flow [2024-06-03 19:57:14,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:14,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:14,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:14,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 19:57:14,056 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:14,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:14,057 INFO L85 PathProgramCache]: Analyzing trace with hash 41431985, now seen corresponding path program 5 times [2024-06-03 19:57:14,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:14,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639934946] [2024-06-03 19:57:14,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:14,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:14,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:14,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639934946] [2024-06-03 19:57:14,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639934946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:14,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:14,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:14,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299340527] [2024-06-03 19:57:14,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:14,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:14,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:14,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:14,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:14,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:14,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 137 transitions, 1665 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:14,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:14,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:14,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:15,088 INFO L124 PetriNetUnfolderBase]: 328/581 cut-off events. [2024-06-03 19:57:15,088 INFO L125 PetriNetUnfolderBase]: For 15302/15302 co-relation queries the response was YES. [2024-06-03 19:57:15,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4112 conditions, 581 events. 328/581 cut-off events. For 15302/15302 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2336 event pairs, 102 based on Foata normal form. 1/582 useless extension candidates. Maximal degree in co-relation 4046. Up to 554 conditions per place. [2024-06-03 19:57:15,092 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 127 selfloop transitions, 15 changer transitions 0/144 dead transitions. [2024-06-03 19:57:15,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 144 transitions, 1965 flow [2024-06-03 19:57:15,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:15,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-03 19:57:15,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-03 19:57:15,097 INFO L175 Difference]: Start difference. First operand has 133 places, 137 transitions, 1665 flow. Second operand 8 states and 81 transitions. [2024-06-03 19:57:15,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 144 transitions, 1965 flow [2024-06-03 19:57:15,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 144 transitions, 1914 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:15,125 INFO L231 Difference]: Finished difference. Result has 135 places, 137 transitions, 1649 flow [2024-06-03 19:57:15,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1649, PETRI_PLACES=135, PETRI_TRANSITIONS=137} [2024-06-03 19:57:15,125 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-03 19:57:15,125 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 137 transitions, 1649 flow [2024-06-03 19:57:15,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:15,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:15,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:15,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 19:57:15,126 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:15,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:15,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1496119633, now seen corresponding path program 1 times [2024-06-03 19:57:15,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:15,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946129513] [2024-06-03 19:57:15,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:15,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:15,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946129513] [2024-06-03 19:57:15,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946129513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:15,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:15,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:15,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40894969] [2024-06-03 19:57:15,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:15,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:15,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:15,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:15,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 137 transitions, 1649 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:15,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:15,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:15,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:16,128 INFO L124 PetriNetUnfolderBase]: 355/636 cut-off events. [2024-06-03 19:57:16,128 INFO L125 PetriNetUnfolderBase]: For 17973/17973 co-relation queries the response was YES. [2024-06-03 19:57:16,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4410 conditions, 636 events. 355/636 cut-off events. For 17973/17973 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2718 event pairs, 58 based on Foata normal form. 2/638 useless extension candidates. Maximal degree in co-relation 4343. Up to 449 conditions per place. [2024-06-03 19:57:16,133 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 112 selfloop transitions, 45 changer transitions 0/159 dead transitions. [2024-06-03 19:57:16,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 159 transitions, 2149 flow [2024-06-03 19:57:16,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:16,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 19:57:16,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:57:16,134 INFO L175 Difference]: Start difference. First operand has 135 places, 137 transitions, 1649 flow. Second operand 9 states and 108 transitions. [2024-06-03 19:57:16,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 159 transitions, 2149 flow [2024-06-03 19:57:16,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 159 transitions, 2104 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:16,165 INFO L231 Difference]: Finished difference. Result has 138 places, 142 transitions, 1750 flow [2024-06-03 19:57:16,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1750, PETRI_PLACES=138, PETRI_TRANSITIONS=142} [2024-06-03 19:57:16,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-03 19:57:16,166 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 142 transitions, 1750 flow [2024-06-03 19:57:16,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:16,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:16,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:16,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 19:57:16,166 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:16,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:16,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1790491051, now seen corresponding path program 2 times [2024-06-03 19:57:16,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:16,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839655910] [2024-06-03 19:57:16,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:16,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:16,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:16,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839655910] [2024-06-03 19:57:16,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839655910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:16,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:16,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:16,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583005009] [2024-06-03 19:57:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:16,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:16,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:16,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:16,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:16,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:16,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 142 transitions, 1750 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:16,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:16,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:16,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:17,116 INFO L124 PetriNetUnfolderBase]: 359/644 cut-off events. [2024-06-03 19:57:17,116 INFO L125 PetriNetUnfolderBase]: For 19388/19388 co-relation queries the response was YES. [2024-06-03 19:57:17,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4616 conditions, 644 events. 359/644 cut-off events. For 19388/19388 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2755 event pairs, 62 based on Foata normal form. 2/646 useless extension candidates. Maximal degree in co-relation 4547. Up to 501 conditions per place. [2024-06-03 19:57:17,120 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 112 selfloop transitions, 43 changer transitions 0/157 dead transitions. [2024-06-03 19:57:17,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 157 transitions, 2165 flow [2024-06-03 19:57:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-03 19:57:17,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-03 19:57:17,121 INFO L175 Difference]: Start difference. First operand has 138 places, 142 transitions, 1750 flow. Second operand 9 states and 104 transitions. [2024-06-03 19:57:17,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 157 transitions, 2165 flow [2024-06-03 19:57:17,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 157 transitions, 2121 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-03 19:57:17,154 INFO L231 Difference]: Finished difference. Result has 144 places, 143 transitions, 1811 flow [2024-06-03 19:57:17,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1811, PETRI_PLACES=144, PETRI_TRANSITIONS=143} [2024-06-03 19:57:17,155 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-03 19:57:17,155 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 143 transitions, 1811 flow [2024-06-03 19:57:17,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:17,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:17,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:17,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 19:57:17,155 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:17,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:17,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2128994325, now seen corresponding path program 3 times [2024-06-03 19:57:17,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:17,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183146934] [2024-06-03 19:57:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:17,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:17,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:17,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183146934] [2024-06-03 19:57:17,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183146934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:17,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:17,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:17,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563217706] [2024-06-03 19:57:17,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:17,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:17,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:17,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:17,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:17,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:17,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 143 transitions, 1811 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:17,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:17,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:17,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:18,095 INFO L124 PetriNetUnfolderBase]: 360/647 cut-off events. [2024-06-03 19:57:18,095 INFO L125 PetriNetUnfolderBase]: For 20740/20740 co-relation queries the response was YES. [2024-06-03 19:57:18,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4670 conditions, 647 events. 360/647 cut-off events. For 20740/20740 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2773 event pairs, 58 based on Foata normal form. 4/651 useless extension candidates. Maximal degree in co-relation 4599. Up to 522 conditions per place. [2024-06-03 19:57:18,099 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 40 changer transitions 0/156 dead transitions. [2024-06-03 19:57:18,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 156 transitions, 2156 flow [2024-06-03 19:57:18,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:18,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-03 19:57:18,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-03 19:57:18,109 INFO L175 Difference]: Start difference. First operand has 144 places, 143 transitions, 1811 flow. Second operand 9 states and 104 transitions. [2024-06-03 19:57:18,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 156 transitions, 2156 flow [2024-06-03 19:57:18,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 156 transitions, 2068 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:18,147 INFO L231 Difference]: Finished difference. Result has 147 places, 144 transitions, 1818 flow [2024-06-03 19:57:18,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1818, PETRI_PLACES=147, PETRI_TRANSITIONS=144} [2024-06-03 19:57:18,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-03 19:57:18,148 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 144 transitions, 1818 flow [2024-06-03 19:57:18,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:18,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:18,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:18,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 19:57:18,148 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:18,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1800621363, now seen corresponding path program 4 times [2024-06-03 19:57:18,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:18,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639866525] [2024-06-03 19:57:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:18,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:18,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:18,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639866525] [2024-06-03 19:57:18,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639866525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:18,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:18,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:18,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402410653] [2024-06-03 19:57:18,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:18,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:18,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:18,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:18,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:18,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:18,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 144 transitions, 1818 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:18,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:18,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:18,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:19,056 INFO L124 PetriNetUnfolderBase]: 376/679 cut-off events. [2024-06-03 19:57:19,056 INFO L125 PetriNetUnfolderBase]: For 22065/22065 co-relation queries the response was YES. [2024-06-03 19:57:19,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4880 conditions, 679 events. 376/679 cut-off events. For 22065/22065 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3003 event pairs, 39 based on Foata normal form. 2/681 useless extension candidates. Maximal degree in co-relation 4808. Up to 382 conditions per place. [2024-06-03 19:57:19,059 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 64 changer transitions 0/165 dead transitions. [2024-06-03 19:57:19,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 165 transitions, 2334 flow [2024-06-03 19:57:19,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:19,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-03 19:57:19,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-03 19:57:19,061 INFO L175 Difference]: Start difference. First operand has 147 places, 144 transitions, 1818 flow. Second operand 9 states and 104 transitions. [2024-06-03 19:57:19,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 165 transitions, 2334 flow [2024-06-03 19:57:19,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 165 transitions, 2266 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:19,097 INFO L231 Difference]: Finished difference. Result has 153 places, 147 transitions, 1937 flow [2024-06-03 19:57:19,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1937, PETRI_PLACES=153, PETRI_TRANSITIONS=147} [2024-06-03 19:57:19,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-03 19:57:19,099 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 147 transitions, 1937 flow [2024-06-03 19:57:19,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:19,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:19,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:19,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 19:57:19,099 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:19,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:19,099 INFO L85 PathProgramCache]: Analyzing trace with hash 270055277, now seen corresponding path program 5 times [2024-06-03 19:57:19,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:19,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949386375] [2024-06-03 19:57:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:19,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:19,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:19,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949386375] [2024-06-03 19:57:19,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949386375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:19,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:19,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:19,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556356019] [2024-06-03 19:57:19,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:19,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:19,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:19,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:19,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:19,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:19,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 147 transitions, 1937 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:19,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:19,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:19,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:20,011 INFO L124 PetriNetUnfolderBase]: 392/711 cut-off events. [2024-06-03 19:57:20,011 INFO L125 PetriNetUnfolderBase]: For 24751/24751 co-relation queries the response was YES. [2024-06-03 19:57:20,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5284 conditions, 711 events. 392/711 cut-off events. For 24751/24751 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3213 event pairs, 64 based on Foata normal form. 2/713 useless extension candidates. Maximal degree in co-relation 5209. Up to 513 conditions per place. [2024-06-03 19:57:20,017 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 110 selfloop transitions, 56 changer transitions 0/168 dead transitions. [2024-06-03 19:57:20,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 168 transitions, 2477 flow [2024-06-03 19:57:20,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 19:57:20,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-03 19:57:20,018 INFO L175 Difference]: Start difference. First operand has 153 places, 147 transitions, 1937 flow. Second operand 9 states and 107 transitions. [2024-06-03 19:57:20,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 168 transitions, 2477 flow [2024-06-03 19:57:20,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 168 transitions, 2324 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:20,066 INFO L231 Difference]: Finished difference. Result has 156 places, 150 transitions, 1946 flow [2024-06-03 19:57:20,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1946, PETRI_PLACES=156, PETRI_TRANSITIONS=150} [2024-06-03 19:57:20,067 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-03 19:57:20,067 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 150 transitions, 1946 flow [2024-06-03 19:57:20,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:20,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:20,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:20,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 19:57:20,068 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:20,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:20,068 INFO L85 PathProgramCache]: Analyzing trace with hash 282137837, now seen corresponding path program 6 times [2024-06-03 19:57:20,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:20,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152779322] [2024-06-03 19:57:20,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:20,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:20,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:20,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152779322] [2024-06-03 19:57:20,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152779322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:20,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:20,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:20,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940709000] [2024-06-03 19:57:20,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:20,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:20,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:20,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:20,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:20,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:20,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 150 transitions, 1946 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:20,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:20,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:20,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:21,017 INFO L124 PetriNetUnfolderBase]: 389/706 cut-off events. [2024-06-03 19:57:21,017 INFO L125 PetriNetUnfolderBase]: For 24878/24878 co-relation queries the response was YES. [2024-06-03 19:57:21,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5135 conditions, 706 events. 389/706 cut-off events. For 24878/24878 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3194 event pairs, 64 based on Foata normal form. 2/708 useless extension candidates. Maximal degree in co-relation 5061. Up to 529 conditions per place. [2024-06-03 19:57:21,021 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 108 selfloop transitions, 55 changer transitions 0/165 dead transitions. [2024-06-03 19:57:21,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 165 transitions, 2374 flow [2024-06-03 19:57:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:21,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-03 19:57:21,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-03 19:57:21,029 INFO L175 Difference]: Start difference. First operand has 156 places, 150 transitions, 1946 flow. Second operand 9 states and 103 transitions. [2024-06-03 19:57:21,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 165 transitions, 2374 flow [2024-06-03 19:57:21,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 165 transitions, 2248 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:21,072 INFO L231 Difference]: Finished difference. Result has 159 places, 150 transitions, 1934 flow [2024-06-03 19:57:21,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1934, PETRI_PLACES=159, PETRI_TRANSITIONS=150} [2024-06-03 19:57:21,073 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 128 predicate places. [2024-06-03 19:57:21,073 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 150 transitions, 1934 flow [2024-06-03 19:57:21,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:21,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:21,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:21,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 19:57:21,074 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:21,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1372159499, now seen corresponding path program 1 times [2024-06-03 19:57:21,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:21,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464566723] [2024-06-03 19:57:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:21,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:21,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:21,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464566723] [2024-06-03 19:57:21,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464566723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:21,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:21,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:21,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072197972] [2024-06-03 19:57:21,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:21,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:21,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:21,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:21,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:21,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:21,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 150 transitions, 1934 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:21,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:21,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:21,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:22,150 INFO L124 PetriNetUnfolderBase]: 392/711 cut-off events. [2024-06-03 19:57:22,150 INFO L125 PetriNetUnfolderBase]: For 25276/25276 co-relation queries the response was YES. [2024-06-03 19:57:22,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5233 conditions, 711 events. 392/711 cut-off events. For 25276/25276 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3211 event pairs, 67 based on Foata normal form. 1/712 useless extension candidates. Maximal degree in co-relation 5158. Up to 521 conditions per place. [2024-06-03 19:57:22,154 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 53 changer transitions 0/167 dead transitions. [2024-06-03 19:57:22,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 167 transitions, 2492 flow [2024-06-03 19:57:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:22,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 19:57:22,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-03 19:57:22,155 INFO L175 Difference]: Start difference. First operand has 159 places, 150 transitions, 1934 flow. Second operand 9 states and 109 transitions. [2024-06-03 19:57:22,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 167 transitions, 2492 flow [2024-06-03 19:57:22,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 167 transitions, 2302 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 19:57:22,204 INFO L231 Difference]: Finished difference. Result has 158 places, 152 transitions, 1897 flow [2024-06-03 19:57:22,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1897, PETRI_PLACES=158, PETRI_TRANSITIONS=152} [2024-06-03 19:57:22,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-03 19:57:22,204 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 152 transitions, 1897 flow [2024-06-03 19:57:22,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:22,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:22,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:22,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 19:57:22,205 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:22,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:22,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1371986333, now seen corresponding path program 1 times [2024-06-03 19:57:22,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:22,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867045103] [2024-06-03 19:57:22,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:22,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:22,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:22,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867045103] [2024-06-03 19:57:22,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867045103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:22,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:22,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:22,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968711486] [2024-06-03 19:57:22,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:22,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:22,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:22,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:22,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:22,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:22,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 152 transitions, 1897 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:22,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:22,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:22,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:23,157 INFO L124 PetriNetUnfolderBase]: 405/732 cut-off events. [2024-06-03 19:57:23,157 INFO L125 PetriNetUnfolderBase]: For 27530/27530 co-relation queries the response was YES. [2024-06-03 19:57:23,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5386 conditions, 732 events. 405/732 cut-off events. For 27530/27530 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3325 event pairs, 74 based on Foata normal form. 1/733 useless extension candidates. Maximal degree in co-relation 5311. Up to 447 conditions per place. [2024-06-03 19:57:23,162 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 109 selfloop transitions, 63 changer transitions 0/174 dead transitions. [2024-06-03 19:57:23,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 174 transitions, 2634 flow [2024-06-03 19:57:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 19:57:23,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-03 19:57:23,163 INFO L175 Difference]: Start difference. First operand has 158 places, 152 transitions, 1897 flow. Second operand 9 states and 113 transitions. [2024-06-03 19:57:23,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 174 transitions, 2634 flow [2024-06-03 19:57:23,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 174 transitions, 2520 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:23,210 INFO L231 Difference]: Finished difference. Result has 160 places, 159 transitions, 2001 flow [2024-06-03 19:57:23,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2001, PETRI_PLACES=160, PETRI_TRANSITIONS=159} [2024-06-03 19:57:23,211 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-03 19:57:23,211 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 159 transitions, 2001 flow [2024-06-03 19:57:23,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:23,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:23,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:23,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 19:57:23,212 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:23,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:23,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1371986519, now seen corresponding path program 2 times [2024-06-03 19:57:23,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:23,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731127412] [2024-06-03 19:57:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:23,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:23,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:23,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731127412] [2024-06-03 19:57:23,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731127412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:23,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:23,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:23,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924540276] [2024-06-03 19:57:23,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:23,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:23,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:23,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:23,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:23,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:23,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 159 transitions, 2001 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:23,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:23,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:23,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:24,222 INFO L124 PetriNetUnfolderBase]: 403/729 cut-off events. [2024-06-03 19:57:24,222 INFO L125 PetriNetUnfolderBase]: For 28401/28401 co-relation queries the response was YES. [2024-06-03 19:57:24,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5403 conditions, 729 events. 403/729 cut-off events. For 28401/28401 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3302 event pairs, 71 based on Foata normal form. 1/730 useless extension candidates. Maximal degree in co-relation 5327. Up to 540 conditions per place. [2024-06-03 19:57:24,227 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 114 selfloop transitions, 55 changer transitions 0/171 dead transitions. [2024-06-03 19:57:24,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 171 transitions, 2439 flow [2024-06-03 19:57:24,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:24,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-03 19:57:24,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 19:57:24,228 INFO L175 Difference]: Start difference. First operand has 160 places, 159 transitions, 2001 flow. Second operand 9 states and 105 transitions. [2024-06-03 19:57:24,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 171 transitions, 2439 flow [2024-06-03 19:57:24,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 171 transitions, 2342 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:24,281 INFO L231 Difference]: Finished difference. Result has 165 places, 159 transitions, 2019 flow [2024-06-03 19:57:24,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2019, PETRI_PLACES=165, PETRI_TRANSITIONS=159} [2024-06-03 19:57:24,281 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-03 19:57:24,281 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 159 transitions, 2019 flow [2024-06-03 19:57:24,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:24,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:24,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:24,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 19:57:24,282 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:24,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:24,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1372159313, now seen corresponding path program 2 times [2024-06-03 19:57:24,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:24,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364951039] [2024-06-03 19:57:24,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:24,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:24,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:24,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364951039] [2024-06-03 19:57:24,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364951039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:24,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:24,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:24,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303668156] [2024-06-03 19:57:24,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:24,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:24,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:24,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:24,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 159 transitions, 2019 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:24,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:24,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:24,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:25,246 INFO L124 PetriNetUnfolderBase]: 399/723 cut-off events. [2024-06-03 19:57:25,246 INFO L125 PetriNetUnfolderBase]: For 29162/29162 co-relation queries the response was YES. [2024-06-03 19:57:25,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5326 conditions, 723 events. 399/723 cut-off events. For 29162/29162 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3284 event pairs, 72 based on Foata normal form. 2/725 useless extension candidates. Maximal degree in co-relation 5249. Up to 443 conditions per place. [2024-06-03 19:57:25,250 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 114 selfloop transitions, 59 changer transitions 0/175 dead transitions. [2024-06-03 19:57:25,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 175 transitions, 2637 flow [2024-06-03 19:57:25,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:25,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:25,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-03 19:57:25,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-03 19:57:25,251 INFO L175 Difference]: Start difference. First operand has 165 places, 159 transitions, 2019 flow. Second operand 9 states and 115 transitions. [2024-06-03 19:57:25,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 175 transitions, 2637 flow [2024-06-03 19:57:25,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 175 transitions, 2501 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 19:57:25,308 INFO L231 Difference]: Finished difference. Result has 166 places, 159 transitions, 2010 flow [2024-06-03 19:57:25,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2010, PETRI_PLACES=166, PETRI_TRANSITIONS=159} [2024-06-03 19:57:25,309 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-03 19:57:25,309 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 159 transitions, 2010 flow [2024-06-03 19:57:25,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:25,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:25,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:25,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 19:57:25,309 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:25,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:25,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1371979575, now seen corresponding path program 1 times [2024-06-03 19:57:25,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:25,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885464528] [2024-06-03 19:57:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:25,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:26,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:26,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885464528] [2024-06-03 19:57:26,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885464528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:26,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:26,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:26,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603870762] [2024-06-03 19:57:26,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:26,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:26,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:26,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:26,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:26,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:26,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 159 transitions, 2010 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:26,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:26,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:26,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:26,692 INFO L124 PetriNetUnfolderBase]: 447/801 cut-off events. [2024-06-03 19:57:26,692 INFO L125 PetriNetUnfolderBase]: For 37726/37726 co-relation queries the response was YES. [2024-06-03 19:57:26,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5896 conditions, 801 events. 447/801 cut-off events. For 37726/37726 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3674 event pairs, 81 based on Foata normal form. 6/807 useless extension candidates. Maximal degree in co-relation 5818. Up to 394 conditions per place. [2024-06-03 19:57:26,698 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 127 selfloop transitions, 63 changer transitions 0/192 dead transitions. [2024-06-03 19:57:26,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 192 transitions, 2784 flow [2024-06-03 19:57:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:57:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:57:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-03 19:57:26,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-03 19:57:26,699 INFO L175 Difference]: Start difference. First operand has 166 places, 159 transitions, 2010 flow. Second operand 10 states and 135 transitions. [2024-06-03 19:57:26,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 192 transitions, 2784 flow [2024-06-03 19:57:26,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 192 transitions, 2637 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 19:57:26,761 INFO L231 Difference]: Finished difference. Result has 168 places, 169 transitions, 2085 flow [2024-06-03 19:57:26,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2085, PETRI_PLACES=168, PETRI_TRANSITIONS=169} [2024-06-03 19:57:26,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-03 19:57:26,762 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 169 transitions, 2085 flow [2024-06-03 19:57:26,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:26,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:26,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:26,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 19:57:26,763 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:26,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:26,763 INFO L85 PathProgramCache]: Analyzing trace with hash -626743461, now seen corresponding path program 3 times [2024-06-03 19:57:26,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:26,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73245198] [2024-06-03 19:57:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:26,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:27,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:27,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73245198] [2024-06-03 19:57:27,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73245198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:27,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:27,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:27,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500870319] [2024-06-03 19:57:27,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:27,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:27,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:27,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:27,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:27,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:27,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 169 transitions, 2085 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:27,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:27,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:27,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:27,807 INFO L124 PetriNetUnfolderBase]: 445/798 cut-off events. [2024-06-03 19:57:27,807 INFO L125 PetriNetUnfolderBase]: For 35182/35182 co-relation queries the response was YES. [2024-06-03 19:57:27,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5972 conditions, 798 events. 445/798 cut-off events. For 35182/35182 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3645 event pairs, 77 based on Foata normal form. 1/799 useless extension candidates. Maximal degree in co-relation 5893. Up to 520 conditions per place. [2024-06-03 19:57:27,813 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 66 changer transitions 0/182 dead transitions. [2024-06-03 19:57:27,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 182 transitions, 2629 flow [2024-06-03 19:57:27,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:27,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-03 19:57:27,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-03 19:57:27,814 INFO L175 Difference]: Start difference. First operand has 168 places, 169 transitions, 2085 flow. Second operand 9 states and 111 transitions. [2024-06-03 19:57:27,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 182 transitions, 2629 flow [2024-06-03 19:57:27,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 182 transitions, 2559 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:27,887 INFO L231 Difference]: Finished difference. Result has 173 places, 169 transitions, 2152 flow [2024-06-03 19:57:27,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2152, PETRI_PLACES=173, PETRI_TRANSITIONS=169} [2024-06-03 19:57:27,887 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-03 19:57:27,887 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 169 transitions, 2152 flow [2024-06-03 19:57:27,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:27,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:27,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:27,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 19:57:27,887 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:27,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:27,888 INFO L85 PathProgramCache]: Analyzing trace with hash 238264363, now seen corresponding path program 7 times [2024-06-03 19:57:27,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:27,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325311368] [2024-06-03 19:57:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:27,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:28,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:28,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325311368] [2024-06-03 19:57:28,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325311368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:28,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:28,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:28,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521901083] [2024-06-03 19:57:28,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:28,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:28,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:28,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:28,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:28,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:28,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 169 transitions, 2152 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:28,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:28,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:28,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:28,806 INFO L124 PetriNetUnfolderBase]: 449/806 cut-off events. [2024-06-03 19:57:28,806 INFO L125 PetriNetUnfolderBase]: For 38191/38191 co-relation queries the response was YES. [2024-06-03 19:57:28,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6113 conditions, 806 events. 449/806 cut-off events. For 38191/38191 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3722 event pairs, 41 based on Foata normal form. 2/808 useless extension candidates. Maximal degree in co-relation 6032. Up to 485 conditions per place. [2024-06-03 19:57:28,812 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 112 selfloop transitions, 71 changer transitions 0/185 dead transitions. [2024-06-03 19:57:28,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 185 transitions, 2722 flow [2024-06-03 19:57:28,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:28,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-03 19:57:28,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-03 19:57:28,813 INFO L175 Difference]: Start difference. First operand has 173 places, 169 transitions, 2152 flow. Second operand 8 states and 95 transitions. [2024-06-03 19:57:28,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 185 transitions, 2722 flow [2024-06-03 19:57:28,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 185 transitions, 2585 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-03 19:57:28,887 INFO L231 Difference]: Finished difference. Result has 173 places, 170 transitions, 2179 flow [2024-06-03 19:57:28,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2179, PETRI_PLACES=173, PETRI_TRANSITIONS=170} [2024-06-03 19:57:28,887 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-03 19:57:28,888 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 170 transitions, 2179 flow [2024-06-03 19:57:28,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:28,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:28,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:28,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 19:57:28,888 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:28,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:28,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1534826423, now seen corresponding path program 8 times [2024-06-03 19:57:28,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:28,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945456332] [2024-06-03 19:57:28,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:28,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:29,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:29,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945456332] [2024-06-03 19:57:29,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945456332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:29,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:29,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:29,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863369851] [2024-06-03 19:57:29,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:29,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:29,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:29,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:29,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:29,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:29,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 170 transitions, 2179 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:29,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:29,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:29,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:29,835 INFO L124 PetriNetUnfolderBase]: 453/814 cut-off events. [2024-06-03 19:57:29,835 INFO L125 PetriNetUnfolderBase]: For 40204/40204 co-relation queries the response was YES. [2024-06-03 19:57:29,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6259 conditions, 814 events. 453/814 cut-off events. For 40204/40204 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3764 event pairs, 144 based on Foata normal form. 2/816 useless extension candidates. Maximal degree in co-relation 6177. Up to 716 conditions per place. [2024-06-03 19:57:29,841 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 150 selfloop transitions, 31 changer transitions 0/183 dead transitions. [2024-06-03 19:57:29,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 183 transitions, 2673 flow [2024-06-03 19:57:29,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:29,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-03 19:57:29,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 19:57:29,842 INFO L175 Difference]: Start difference. First operand has 173 places, 170 transitions, 2179 flow. Second operand 9 states and 96 transitions. [2024-06-03 19:57:29,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 183 transitions, 2673 flow [2024-06-03 19:57:29,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 183 transitions, 2543 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-03 19:57:29,925 INFO L231 Difference]: Finished difference. Result has 174 places, 171 transitions, 2137 flow [2024-06-03 19:57:29,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2137, PETRI_PLACES=174, PETRI_TRANSITIONS=171} [2024-06-03 19:57:29,926 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-03 19:57:29,926 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 171 transitions, 2137 flow [2024-06-03 19:57:29,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:29,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:29,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:29,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 19:57:29,928 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:29,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:29,928 INFO L85 PathProgramCache]: Analyzing trace with hash -457120997, now seen corresponding path program 9 times [2024-06-03 19:57:29,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:29,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428509574] [2024-06-03 19:57:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:29,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:30,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:30,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428509574] [2024-06-03 19:57:30,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428509574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:30,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:30,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:30,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50036403] [2024-06-03 19:57:30,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:30,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:30,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:30,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:30,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:30,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:30,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 171 transitions, 2137 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:30,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:30,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:30,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:30,858 INFO L124 PetriNetUnfolderBase]: 454/817 cut-off events. [2024-06-03 19:57:30,858 INFO L125 PetriNetUnfolderBase]: For 36391/36391 co-relation queries the response was YES. [2024-06-03 19:57:30,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6010 conditions, 817 events. 454/817 cut-off events. For 36391/36391 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3803 event pairs, 73 based on Foata normal form. 4/821 useless extension candidates. Maximal degree in co-relation 5930. Up to 674 conditions per place. [2024-06-03 19:57:30,864 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 132 selfloop transitions, 48 changer transitions 0/182 dead transitions. [2024-06-03 19:57:30,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 182 transitions, 2530 flow [2024-06-03 19:57:30,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:30,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-03 19:57:30,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:57:30,865 INFO L175 Difference]: Start difference. First operand has 174 places, 171 transitions, 2137 flow. Second operand 8 states and 92 transitions. [2024-06-03 19:57:30,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 182 transitions, 2530 flow [2024-06-03 19:57:30,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 182 transitions, 2462 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:30,932 INFO L231 Difference]: Finished difference. Result has 175 places, 172 transitions, 2185 flow [2024-06-03 19:57:30,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2185, PETRI_PLACES=175, PETRI_TRANSITIONS=172} [2024-06-03 19:57:30,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-03 19:57:30,933 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 172 transitions, 2185 flow [2024-06-03 19:57:30,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:30,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:30,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:30,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 19:57:30,934 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:30,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:30,934 INFO L85 PathProgramCache]: Analyzing trace with hash -341645377, now seen corresponding path program 4 times [2024-06-03 19:57:30,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:30,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009991602] [2024-06-03 19:57:30,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:30,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:31,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:31,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009991602] [2024-06-03 19:57:31,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009991602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:31,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:31,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:31,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386592897] [2024-06-03 19:57:31,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:31,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:31,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:31,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:31,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:31,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:31,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 2185 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:31,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:31,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:31,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:32,027 INFO L124 PetriNetUnfolderBase]: 467/838 cut-off events. [2024-06-03 19:57:32,027 INFO L125 PetriNetUnfolderBase]: For 37764/37764 co-relation queries the response was YES. [2024-06-03 19:57:32,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6315 conditions, 838 events. 467/838 cut-off events. For 37764/37764 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3911 event pairs, 74 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 6234. Up to 550 conditions per place. [2024-06-03 19:57:32,033 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 88 changer transitions 0/189 dead transitions. [2024-06-03 19:57:32,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 189 transitions, 2819 flow [2024-06-03 19:57:32,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:32,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:32,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 19:57:32,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-03 19:57:32,034 INFO L175 Difference]: Start difference. First operand has 175 places, 172 transitions, 2185 flow. Second operand 8 states and 97 transitions. [2024-06-03 19:57:32,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 189 transitions, 2819 flow [2024-06-03 19:57:32,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 189 transitions, 2720 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:32,106 INFO L231 Difference]: Finished difference. Result has 177 places, 178 transitions, 2351 flow [2024-06-03 19:57:32,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2351, PETRI_PLACES=177, PETRI_TRANSITIONS=178} [2024-06-03 19:57:32,107 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-03 19:57:32,107 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 178 transitions, 2351 flow [2024-06-03 19:57:32,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:32,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:32,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:32,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-03 19:57:32,107 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:32,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:32,108 INFO L85 PathProgramCache]: Analyzing trace with hash -341825053, now seen corresponding path program 3 times [2024-06-03 19:57:32,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:32,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881548758] [2024-06-03 19:57:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:32,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:32,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:32,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881548758] [2024-06-03 19:57:32,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881548758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:32,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:32,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:32,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87278704] [2024-06-03 19:57:32,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:32,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:32,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:32,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:32,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:32,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:32,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 178 transitions, 2351 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:32,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:32,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:32,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:33,063 INFO L124 PetriNetUnfolderBase]: 470/843 cut-off events. [2024-06-03 19:57:33,063 INFO L125 PetriNetUnfolderBase]: For 39592/39592 co-relation queries the response was YES. [2024-06-03 19:57:33,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6493 conditions, 843 events. 470/843 cut-off events. For 39592/39592 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3939 event pairs, 78 based on Foata normal form. 1/844 useless extension candidates. Maximal degree in co-relation 6411. Up to 653 conditions per place. [2024-06-03 19:57:33,068 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 124 selfloop transitions, 67 changer transitions 0/193 dead transitions. [2024-06-03 19:57:33,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 193 transitions, 2893 flow [2024-06-03 19:57:33,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:33,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 19:57:33,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-03 19:57:33,069 INFO L175 Difference]: Start difference. First operand has 177 places, 178 transitions, 2351 flow. Second operand 8 states and 97 transitions. [2024-06-03 19:57:33,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 193 transitions, 2893 flow [2024-06-03 19:57:33,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 193 transitions, 2778 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:33,152 INFO L231 Difference]: Finished difference. Result has 180 places, 180 transitions, 2417 flow [2024-06-03 19:57:33,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2417, PETRI_PLACES=180, PETRI_TRANSITIONS=180} [2024-06-03 19:57:33,153 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-03 19:57:33,153 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 180 transitions, 2417 flow [2024-06-03 19:57:33,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:33,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:33,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:33,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-03 19:57:33,154 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:33,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:33,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1416733783, now seen corresponding path program 5 times [2024-06-03 19:57:33,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:33,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38424628] [2024-06-03 19:57:33,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:33,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:33,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:33,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38424628] [2024-06-03 19:57:33,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38424628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:33,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:33,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:33,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608048128] [2024-06-03 19:57:33,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:33,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:33,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:33,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:33,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 180 transitions, 2417 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:33,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:33,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:33,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:34,131 INFO L124 PetriNetUnfolderBase]: 481/861 cut-off events. [2024-06-03 19:57:34,131 INFO L125 PetriNetUnfolderBase]: For 41568/41568 co-relation queries the response was YES. [2024-06-03 19:57:34,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6619 conditions, 861 events. 481/861 cut-off events. For 41568/41568 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4050 event pairs, 82 based on Foata normal form. 2/863 useless extension candidates. Maximal degree in co-relation 6537. Up to 564 conditions per place. [2024-06-03 19:57:34,137 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 88 changer transitions 0/200 dead transitions. [2024-06-03 19:57:34,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 200 transitions, 3085 flow [2024-06-03 19:57:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:34,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-03 19:57:34,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-03 19:57:34,140 INFO L175 Difference]: Start difference. First operand has 180 places, 180 transitions, 2417 flow. Second operand 8 states and 102 transitions. [2024-06-03 19:57:34,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 200 transitions, 3085 flow [2024-06-03 19:57:34,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 200 transitions, 2934 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:34,215 INFO L231 Difference]: Finished difference. Result has 181 places, 186 transitions, 2529 flow [2024-06-03 19:57:34,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2529, PETRI_PLACES=181, PETRI_TRANSITIONS=186} [2024-06-03 19:57:34,215 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-03 19:57:34,215 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 186 transitions, 2529 flow [2024-06-03 19:57:34,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:34,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:34,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:34,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-03 19:57:34,215 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:34,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:34,216 INFO L85 PathProgramCache]: Analyzing trace with hash 356590247, now seen corresponding path program 4 times [2024-06-03 19:57:34,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:34,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529140094] [2024-06-03 19:57:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:34,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:34,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:34,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529140094] [2024-06-03 19:57:34,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529140094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:34,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:34,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:34,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290724524] [2024-06-03 19:57:34,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:34,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:34,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:34,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:34,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:34,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:34,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 186 transitions, 2529 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:34,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:34,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:34,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:35,189 INFO L124 PetriNetUnfolderBase]: 484/866 cut-off events. [2024-06-03 19:57:35,189 INFO L125 PetriNetUnfolderBase]: For 41132/41132 co-relation queries the response was YES. [2024-06-03 19:57:35,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6723 conditions, 866 events. 484/866 cut-off events. For 41132/41132 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4071 event pairs, 73 based on Foata normal form. 1/867 useless extension candidates. Maximal degree in co-relation 6641. Up to 675 conditions per place. [2024-06-03 19:57:35,195 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 128 selfloop transitions, 68 changer transitions 0/198 dead transitions. [2024-06-03 19:57:35,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 198 transitions, 3063 flow [2024-06-03 19:57:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-03 19:57:35,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:57:35,196 INFO L175 Difference]: Start difference. First operand has 181 places, 186 transitions, 2529 flow. Second operand 8 states and 92 transitions. [2024-06-03 19:57:35,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 198 transitions, 3063 flow [2024-06-03 19:57:35,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 198 transitions, 2962 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:35,279 INFO L231 Difference]: Finished difference. Result has 184 places, 188 transitions, 2612 flow [2024-06-03 19:57:35,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2431, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2612, PETRI_PLACES=184, PETRI_TRANSITIONS=188} [2024-06-03 19:57:35,280 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-03 19:57:35,280 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 188 transitions, 2612 flow [2024-06-03 19:57:35,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:35,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:35,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:35,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-03 19:57:35,280 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:35,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:35,280 INFO L85 PathProgramCache]: Analyzing trace with hash 356590433, now seen corresponding path program 6 times [2024-06-03 19:57:35,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:35,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281660660] [2024-06-03 19:57:35,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:35,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:35,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:35,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281660660] [2024-06-03 19:57:35,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281660660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:35,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:35,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:35,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617499689] [2024-06-03 19:57:35,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:35,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:35,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:36,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:36,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 188 transitions, 2612 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:36,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:36,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:36,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:36,308 INFO L124 PetriNetUnfolderBase]: 482/863 cut-off events. [2024-06-03 19:57:36,308 INFO L125 PetriNetUnfolderBase]: For 40686/40686 co-relation queries the response was YES. [2024-06-03 19:57:36,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 863 events. 482/863 cut-off events. For 40686/40686 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4043 event pairs, 76 based on Foata normal form. 1/864 useless extension candidates. Maximal degree in co-relation 6580. Up to 565 conditions per place. [2024-06-03 19:57:36,314 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 107 selfloop transitions, 90 changer transitions 0/199 dead transitions. [2024-06-03 19:57:36,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 199 transitions, 3192 flow [2024-06-03 19:57:36,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:36,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 19:57:36,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-03 19:57:36,315 INFO L175 Difference]: Start difference. First operand has 184 places, 188 transitions, 2612 flow. Second operand 8 states and 97 transitions. [2024-06-03 19:57:36,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 199 transitions, 3192 flow [2024-06-03 19:57:36,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 199 transitions, 3086 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:36,401 INFO L231 Difference]: Finished difference. Result has 186 places, 188 transitions, 2698 flow [2024-06-03 19:57:36,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2510, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2698, PETRI_PLACES=186, PETRI_TRANSITIONS=188} [2024-06-03 19:57:36,401 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-03 19:57:36,401 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 188 transitions, 2698 flow [2024-06-03 19:57:36,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:36,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:36,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:36,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-03 19:57:36,402 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:36,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:36,402 INFO L85 PathProgramCache]: Analyzing trace with hash -318714959, now seen corresponding path program 2 times [2024-06-03 19:57:36,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:36,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549858079] [2024-06-03 19:57:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:36,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:37,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:37,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549858079] [2024-06-03 19:57:37,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549858079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:37,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:37,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:37,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901058587] [2024-06-03 19:57:37,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:37,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:37,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:37,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:37,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:37,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:37,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 188 transitions, 2698 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:37,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:37,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:37,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:37,762 INFO L124 PetriNetUnfolderBase]: 512/913 cut-off events. [2024-06-03 19:57:37,763 INFO L125 PetriNetUnfolderBase]: For 46990/46990 co-relation queries the response was YES. [2024-06-03 19:57:37,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7045 conditions, 913 events. 512/913 cut-off events. For 46990/46990 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4335 event pairs, 79 based on Foata normal form. 6/919 useless extension candidates. Maximal degree in co-relation 6963. Up to 447 conditions per place. [2024-06-03 19:57:37,768 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 124 selfloop transitions, 87 changer transitions 0/213 dead transitions. [2024-06-03 19:57:37,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 213 transitions, 3502 flow [2024-06-03 19:57:37,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:37,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-03 19:57:37,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-03 19:57:37,769 INFO L175 Difference]: Start difference. First operand has 186 places, 188 transitions, 2698 flow. Second operand 9 states and 119 transitions. [2024-06-03 19:57:37,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 213 transitions, 3502 flow [2024-06-03 19:57:37,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 213 transitions, 3348 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:37,848 INFO L231 Difference]: Finished difference. Result has 189 places, 194 transitions, 2810 flow [2024-06-03 19:57:37,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2810, PETRI_PLACES=189, PETRI_TRANSITIONS=194} [2024-06-03 19:57:37,848 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-03 19:57:37,848 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 194 transitions, 2810 flow [2024-06-03 19:57:37,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:37,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:37,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:37,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-03 19:57:37,849 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:37,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash 417478531, now seen corresponding path program 3 times [2024-06-03 19:57:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:37,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815898463] [2024-06-03 19:57:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:37,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:38,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:38,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:38,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815898463] [2024-06-03 19:57:38,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815898463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:38,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:38,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:38,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016868910] [2024-06-03 19:57:38,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:38,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:38,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:38,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:38,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:38,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:38,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 194 transitions, 2810 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:38,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:38,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:38,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:39,217 INFO L124 PetriNetUnfolderBase]: 518/923 cut-off events. [2024-06-03 19:57:39,218 INFO L125 PetriNetUnfolderBase]: For 44150/44150 co-relation queries the response was YES. [2024-06-03 19:57:39,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7243 conditions, 923 events. 518/923 cut-off events. For 44150/44150 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4402 event pairs, 143 based on Foata normal form. 2/925 useless extension candidates. Maximal degree in co-relation 7161. Up to 855 conditions per place. [2024-06-03 19:57:39,224 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 185 selfloop transitions, 23 changer transitions 0/210 dead transitions. [2024-06-03 19:57:39,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 210 transitions, 3392 flow [2024-06-03 19:57:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:39,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 19:57:39,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-03 19:57:39,227 INFO L175 Difference]: Start difference. First operand has 189 places, 194 transitions, 2810 flow. Second operand 9 states and 98 transitions. [2024-06-03 19:57:39,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 210 transitions, 3392 flow [2024-06-03 19:57:39,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 210 transitions, 3195 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:39,317 INFO L231 Difference]: Finished difference. Result has 192 places, 198 transitions, 2730 flow [2024-06-03 19:57:39,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2621, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2730, PETRI_PLACES=192, PETRI_TRANSITIONS=198} [2024-06-03 19:57:39,317 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-03 19:57:39,317 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 198 transitions, 2730 flow [2024-06-03 19:57:39,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:39,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:39,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:39,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-03 19:57:39,318 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:39,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:39,318 INFO L85 PathProgramCache]: Analyzing trace with hash -121250185, now seen corresponding path program 7 times [2024-06-03 19:57:39,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:39,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750542945] [2024-06-03 19:57:39,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:39,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:40,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:40,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750542945] [2024-06-03 19:57:40,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750542945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:40,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:40,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:40,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118859741] [2024-06-03 19:57:40,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:40,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:40,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:40,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:40,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:40,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:40,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 198 transitions, 2730 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:40,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:40,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:40,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:40,383 INFO L124 PetriNetUnfolderBase]: 526/936 cut-off events. [2024-06-03 19:57:40,383 INFO L125 PetriNetUnfolderBase]: For 44334/44334 co-relation queries the response was YES. [2024-06-03 19:57:40,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7119 conditions, 936 events. 526/936 cut-off events. For 44334/44334 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4471 event pairs, 145 based on Foata normal form. 1/937 useless extension candidates. Maximal degree in co-relation 7036. Up to 897 conditions per place. [2024-06-03 19:57:40,389 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 189 selfloop transitions, 19 changer transitions 0/210 dead transitions. [2024-06-03 19:57:40,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 210 transitions, 3308 flow [2024-06-03 19:57:40,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-03 19:57:40,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33203125 [2024-06-03 19:57:40,391 INFO L175 Difference]: Start difference. First operand has 192 places, 198 transitions, 2730 flow. Second operand 8 states and 85 transitions. [2024-06-03 19:57:40,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 210 transitions, 3308 flow [2024-06-03 19:57:40,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 210 transitions, 3268 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:40,476 INFO L231 Difference]: Finished difference. Result has 195 places, 202 transitions, 2801 flow [2024-06-03 19:57:40,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2801, PETRI_PLACES=195, PETRI_TRANSITIONS=202} [2024-06-03 19:57:40,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-03 19:57:40,476 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 202 transitions, 2801 flow [2024-06-03 19:57:40,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:40,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:40,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:40,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-03 19:57:40,477 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:40,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:40,477 INFO L85 PathProgramCache]: Analyzing trace with hash 685295745, now seen corresponding path program 4 times [2024-06-03 19:57:40,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:40,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234924390] [2024-06-03 19:57:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:40,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:41,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:41,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234924390] [2024-06-03 19:57:41,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234924390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:41,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:41,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:41,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516437811] [2024-06-03 19:57:41,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:41,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:41,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:41,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:41,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:41,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:41,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 202 transitions, 2801 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:41,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:41,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:41,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:41,782 INFO L124 PetriNetUnfolderBase]: 537/954 cut-off events. [2024-06-03 19:57:41,782 INFO L125 PetriNetUnfolderBase]: For 48014/48014 co-relation queries the response was YES. [2024-06-03 19:57:41,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7326 conditions, 954 events. 537/954 cut-off events. For 48014/48014 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4581 event pairs, 143 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 7241. Up to 899 conditions per place. [2024-06-03 19:57:41,789 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 195 selfloop transitions, 22 changer transitions 0/219 dead transitions. [2024-06-03 19:57:41,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 219 transitions, 3412 flow [2024-06-03 19:57:41,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-03 19:57:41,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 19:57:41,790 INFO L175 Difference]: Start difference. First operand has 195 places, 202 transitions, 2801 flow. Second operand 9 states and 96 transitions. [2024-06-03 19:57:41,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 219 transitions, 3412 flow [2024-06-03 19:57:41,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 219 transitions, 3369 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:41,898 INFO L231 Difference]: Finished difference. Result has 201 places, 208 transitions, 2889 flow [2024-06-03 19:57:41,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2889, PETRI_PLACES=201, PETRI_TRANSITIONS=208} [2024-06-03 19:57:41,899 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-03 19:57:41,899 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 208 transitions, 2889 flow [2024-06-03 19:57:41,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:41,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:41,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:41,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-03 19:57:41,899 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:41,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:41,900 INFO L85 PathProgramCache]: Analyzing trace with hash 108669313, now seen corresponding path program 5 times [2024-06-03 19:57:41,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:41,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388058255] [2024-06-03 19:57:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:41,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:42,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:42,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388058255] [2024-06-03 19:57:42,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388058255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:42,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:42,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:42,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110811557] [2024-06-03 19:57:42,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:42,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:42,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:42,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:42,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:42,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 208 transitions, 2889 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:42,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:42,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:42,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:43,282 INFO L124 PetriNetUnfolderBase]: 543/964 cut-off events. [2024-06-03 19:57:43,282 INFO L125 PetriNetUnfolderBase]: For 50222/50222 co-relation queries the response was YES. [2024-06-03 19:57:43,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7526 conditions, 964 events. 543/964 cut-off events. For 50222/50222 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4627 event pairs, 143 based on Foata normal form. 2/966 useless extension candidates. Maximal degree in co-relation 7438. Up to 913 conditions per place. [2024-06-03 19:57:43,290 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 198 selfloop transitions, 21 changer transitions 0/221 dead transitions. [2024-06-03 19:57:43,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 221 transitions, 3474 flow [2024-06-03 19:57:43,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-03 19:57:43,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3263888888888889 [2024-06-03 19:57:43,291 INFO L175 Difference]: Start difference. First operand has 201 places, 208 transitions, 2889 flow. Second operand 9 states and 94 transitions. [2024-06-03 19:57:43,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 221 transitions, 3474 flow [2024-06-03 19:57:43,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 221 transitions, 3441 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-03 19:57:43,397 INFO L231 Difference]: Finished difference. Result has 207 places, 210 transitions, 2938 flow [2024-06-03 19:57:43,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2858, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2938, PETRI_PLACES=207, PETRI_TRANSITIONS=210} [2024-06-03 19:57:43,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-03 19:57:43,398 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 210 transitions, 2938 flow [2024-06-03 19:57:43,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:43,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:43,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:43,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-03 19:57:43,399 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:43,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:43,399 INFO L85 PathProgramCache]: Analyzing trace with hash 100388345, now seen corresponding path program 8 times [2024-06-03 19:57:43,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:43,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665627256] [2024-06-03 19:57:43,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:43,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:44,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:44,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665627256] [2024-06-03 19:57:44,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665627256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:44,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:44,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:44,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948838999] [2024-06-03 19:57:44,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:44,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:44,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:44,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:44,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:44,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:44,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 210 transitions, 2938 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:44,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:44,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:44,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:44,380 INFO L124 PetriNetUnfolderBase]: 541/961 cut-off events. [2024-06-03 19:57:44,380 INFO L125 PetriNetUnfolderBase]: For 50254/50254 co-relation queries the response was YES. [2024-06-03 19:57:44,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7518 conditions, 961 events. 541/961 cut-off events. For 50254/50254 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4610 event pairs, 145 based on Foata normal form. 1/962 useless extension candidates. Maximal degree in co-relation 7428. Up to 923 conditions per place. [2024-06-03 19:57:44,386 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 196 selfloop transitions, 19 changer transitions 0/217 dead transitions. [2024-06-03 19:57:44,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 217 transitions, 3384 flow [2024-06-03 19:57:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-03 19:57:44,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 19:57:44,387 INFO L175 Difference]: Start difference. First operand has 207 places, 210 transitions, 2938 flow. Second operand 8 states and 84 transitions. [2024-06-03 19:57:44,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 217 transitions, 3384 flow [2024-06-03 19:57:44,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 217 transitions, 3306 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:44,503 INFO L231 Difference]: Finished difference. Result has 208 places, 210 transitions, 2903 flow [2024-06-03 19:57:44,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2903, PETRI_PLACES=208, PETRI_TRANSITIONS=210} [2024-06-03 19:57:44,504 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-03 19:57:44,504 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 210 transitions, 2903 flow [2024-06-03 19:57:44,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:44,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:44,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:44,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-03 19:57:44,504 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:44,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:44,504 INFO L85 PathProgramCache]: Analyzing trace with hash -810220573, now seen corresponding path program 5 times [2024-06-03 19:57:44,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:44,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962825507] [2024-06-03 19:57:44,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:44,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:45,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:45,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962825507] [2024-06-03 19:57:45,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962825507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:45,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:45,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:45,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818805745] [2024-06-03 19:57:45,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:45,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:45,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:45,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:45,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:45,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 210 transitions, 2903 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:45,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:45,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:45,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:45,449 INFO L124 PetriNetUnfolderBase]: 539/958 cut-off events. [2024-06-03 19:57:45,449 INFO L125 PetriNetUnfolderBase]: For 50919/50919 co-relation queries the response was YES. [2024-06-03 19:57:45,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7441 conditions, 958 events. 539/958 cut-off events. For 50919/50919 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4596 event pairs, 144 based on Foata normal form. 1/959 useless extension candidates. Maximal degree in co-relation 7350. Up to 929 conditions per place. [2024-06-03 19:57:45,455 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 201 selfloop transitions, 14 changer transitions 0/217 dead transitions. [2024-06-03 19:57:45,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 217 transitions, 3349 flow [2024-06-03 19:57:45,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:45,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-03 19:57:45,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-03 19:57:45,464 INFO L175 Difference]: Start difference. First operand has 208 places, 210 transitions, 2903 flow. Second operand 8 states and 81 transitions. [2024-06-03 19:57:45,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 217 transitions, 3349 flow [2024-06-03 19:57:45,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 217 transitions, 3302 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:45,580 INFO L231 Difference]: Finished difference. Result has 209 places, 210 transitions, 2889 flow [2024-06-03 19:57:45,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2856, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2889, PETRI_PLACES=209, PETRI_TRANSITIONS=210} [2024-06-03 19:57:45,580 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-03 19:57:45,580 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 210 transitions, 2889 flow [2024-06-03 19:57:45,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:45,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:45,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:45,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-03 19:57:45,581 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:45,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash -801939667, now seen corresponding path program 9 times [2024-06-03 19:57:45,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:45,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830183954] [2024-06-03 19:57:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:45,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:46,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:46,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830183954] [2024-06-03 19:57:46,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830183954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:46,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:46,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:46,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56673890] [2024-06-03 19:57:46,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:46,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:46,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:46,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:46,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:46,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:46,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 210 transitions, 2889 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:46,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:46,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:46,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:46,559 INFO L124 PetriNetUnfolderBase]: 537/955 cut-off events. [2024-06-03 19:57:46,559 INFO L125 PetriNetUnfolderBase]: For 51892/51892 co-relation queries the response was YES. [2024-06-03 19:57:46,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7406 conditions, 955 events. 537/955 cut-off events. For 51892/51892 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4585 event pairs, 144 based on Foata normal form. 1/956 useless extension candidates. Maximal degree in co-relation 7314. Up to 926 conditions per place. [2024-06-03 19:57:46,565 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 200 selfloop transitions, 15 changer transitions 0/217 dead transitions. [2024-06-03 19:57:46,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 217 transitions, 3335 flow [2024-06-03 19:57:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:46,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-03 19:57:46,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-03 19:57:46,566 INFO L175 Difference]: Start difference. First operand has 209 places, 210 transitions, 2889 flow. Second operand 8 states and 82 transitions. [2024-06-03 19:57:46,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 217 transitions, 3335 flow [2024-06-03 19:57:46,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 217 transitions, 3227 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 19:57:46,695 INFO L231 Difference]: Finished difference. Result has 209 places, 210 transitions, 2816 flow [2024-06-03 19:57:46,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2781, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2816, PETRI_PLACES=209, PETRI_TRANSITIONS=210} [2024-06-03 19:57:46,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-03 19:57:46,696 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 210 transitions, 2816 flow [2024-06-03 19:57:46,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:46,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:46,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:46,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-03 19:57:46,696 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:46,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:46,696 INFO L85 PathProgramCache]: Analyzing trace with hash -809974619, now seen corresponding path program 6 times [2024-06-03 19:57:46,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:46,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720597319] [2024-06-03 19:57:46,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:46,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:47,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:47,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720597319] [2024-06-03 19:57:47,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720597319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:47,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:47,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:47,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082077085] [2024-06-03 19:57:47,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:47,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:47,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:47,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:47,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:47,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:47,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 210 transitions, 2816 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:47,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:47,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:47,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:48,011 INFO L124 PetriNetUnfolderBase]: 531/946 cut-off events. [2024-06-03 19:57:48,012 INFO L125 PetriNetUnfolderBase]: For 51960/51960 co-relation queries the response was YES. [2024-06-03 19:57:48,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7216 conditions, 946 events. 531/946 cut-off events. For 51960/51960 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4547 event pairs, 142 based on Foata normal form. 3/949 useless extension candidates. Maximal degree in co-relation 7123. Up to 908 conditions per place. [2024-06-03 19:57:48,019 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 199 selfloop transitions, 18 changer transitions 0/219 dead transitions. [2024-06-03 19:57:48,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 219 transitions, 3272 flow [2024-06-03 19:57:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-03 19:57:48,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-03 19:57:48,020 INFO L175 Difference]: Start difference. First operand has 209 places, 210 transitions, 2816 flow. Second operand 9 states and 90 transitions. [2024-06-03 19:57:48,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 219 transitions, 3272 flow [2024-06-03 19:57:48,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 219 transitions, 3179 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:48,126 INFO L231 Difference]: Finished difference. Result has 211 places, 210 transitions, 2767 flow [2024-06-03 19:57:48,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2767, PETRI_PLACES=211, PETRI_TRANSITIONS=210} [2024-06-03 19:57:48,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-03 19:57:48,127 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 210 transitions, 2767 flow [2024-06-03 19:57:48,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:48,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:48,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:48,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-03 19:57:48,127 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:48,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:48,128 INFO L85 PathProgramCache]: Analyzing trace with hash 108976895, now seen corresponding path program 1 times [2024-06-03 19:57:48,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:48,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061016179] [2024-06-03 19:57:48,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:48,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:49,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:49,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061016179] [2024-06-03 19:57:49,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061016179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:49,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:49,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:57:49,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113329651] [2024-06-03 19:57:49,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:49,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:57:49,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:49,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:57:49,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:57:49,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:49,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 210 transitions, 2767 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:49,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:49,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:49,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:49,792 INFO L124 PetriNetUnfolderBase]: 528/941 cut-off events. [2024-06-03 19:57:49,792 INFO L125 PetriNetUnfolderBase]: For 50556/50556 co-relation queries the response was YES. [2024-06-03 19:57:49,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7045 conditions, 941 events. 528/941 cut-off events. For 50556/50556 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4505 event pairs, 141 based on Foata normal form. 2/943 useless extension candidates. Maximal degree in co-relation 6952. Up to 906 conditions per place. [2024-06-03 19:57:49,799 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 202 selfloop transitions, 15 changer transitions 0/219 dead transitions. [2024-06-03 19:57:49,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 219 transitions, 3221 flow [2024-06-03 19:57:49,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:49,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:49,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-03 19:57:49,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-03 19:57:49,800 INFO L175 Difference]: Start difference. First operand has 211 places, 210 transitions, 2767 flow. Second operand 9 states and 88 transitions. [2024-06-03 19:57:49,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 219 transitions, 3221 flow [2024-06-03 19:57:49,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 219 transitions, 3165 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 19:57:49,908 INFO L231 Difference]: Finished difference. Result has 211 places, 210 transitions, 2745 flow [2024-06-03 19:57:49,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2711, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2745, PETRI_PLACES=211, PETRI_TRANSITIONS=210} [2024-06-03 19:57:49,909 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-03 19:57:49,909 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 210 transitions, 2745 flow [2024-06-03 19:57:49,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:49,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:49,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:49,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-03 19:57:49,909 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:49,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash -332413997, now seen corresponding path program 1 times [2024-06-03 19:57:49,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:49,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565808731] [2024-06-03 19:57:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:49,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:50,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:50,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565808731] [2024-06-03 19:57:50,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565808731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:50,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:50,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:50,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939686652] [2024-06-03 19:57:50,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:50,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:50,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:50,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:50,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:50,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 210 transitions, 2745 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:50,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:50,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:50,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:50,775 INFO L124 PetriNetUnfolderBase]: 539/962 cut-off events. [2024-06-03 19:57:50,775 INFO L125 PetriNetUnfolderBase]: For 54762/54762 co-relation queries the response was YES. [2024-06-03 19:57:50,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 962 events. 539/962 cut-off events. For 54762/54762 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4646 event pairs, 75 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 7124. Up to 653 conditions per place. [2024-06-03 19:57:50,782 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 169 selfloop transitions, 57 changer transitions 0/228 dead transitions. [2024-06-03 19:57:50,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 228 transitions, 3349 flow [2024-06-03 19:57:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:50,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:50,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-03 19:57:50,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-03 19:57:50,782 INFO L175 Difference]: Start difference. First operand has 211 places, 210 transitions, 2745 flow. Second operand 9 states and 106 transitions. [2024-06-03 19:57:50,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 228 transitions, 3349 flow [2024-06-03 19:57:50,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 228 transitions, 3306 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 19:57:50,891 INFO L231 Difference]: Finished difference. Result has 212 places, 212 transitions, 2839 flow [2024-06-03 19:57:50,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2702, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2839, PETRI_PLACES=212, PETRI_TRANSITIONS=212} [2024-06-03 19:57:50,891 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-03 19:57:50,891 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 212 transitions, 2839 flow [2024-06-03 19:57:50,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:50,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:50,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:50,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-03 19:57:50,892 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:50,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash 29636863, now seen corresponding path program 2 times [2024-06-03 19:57:50,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:50,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900222477] [2024-06-03 19:57:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:50,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:51,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:51,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900222477] [2024-06-03 19:57:51,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900222477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:51,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:51,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:51,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586372624] [2024-06-03 19:57:51,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:51,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:51,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:51,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:51,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:51,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:51,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 212 transitions, 2839 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:51,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:51,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:51,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:51,860 INFO L124 PetriNetUnfolderBase]: 543/970 cut-off events. [2024-06-03 19:57:51,861 INFO L125 PetriNetUnfolderBase]: For 57173/57173 co-relation queries the response was YES. [2024-06-03 19:57:51,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7388 conditions, 970 events. 543/970 cut-off events. For 57173/57173 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4694 event pairs, 76 based on Foata normal form. 2/972 useless extension candidates. Maximal degree in co-relation 7295. Up to 774 conditions per place. [2024-06-03 19:57:51,868 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 160 selfloop transitions, 63 changer transitions 0/225 dead transitions. [2024-06-03 19:57:51,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 225 transitions, 3325 flow [2024-06-03 19:57:51,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:51,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 19:57:51,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-03 19:57:51,869 INFO L175 Difference]: Start difference. First operand has 212 places, 212 transitions, 2839 flow. Second operand 9 states and 107 transitions. [2024-06-03 19:57:51,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 225 transitions, 3325 flow [2024-06-03 19:57:51,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 225 transitions, 3255 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:51,999 INFO L231 Difference]: Finished difference. Result has 216 places, 213 transitions, 2911 flow [2024-06-03 19:57:51,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2771, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2911, PETRI_PLACES=216, PETRI_TRANSITIONS=213} [2024-06-03 19:57:51,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-03 19:57:52,000 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 213 transitions, 2911 flow [2024-06-03 19:57:52,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:52,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:52,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:52,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-03 19:57:52,000 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:52,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:52,001 INFO L85 PathProgramCache]: Analyzing trace with hash -330540047, now seen corresponding path program 3 times [2024-06-03 19:57:52,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:52,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712360129] [2024-06-03 19:57:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:52,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:52,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:52,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712360129] [2024-06-03 19:57:52,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712360129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:52,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:52,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:52,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920897740] [2024-06-03 19:57:52,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:52,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:52,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:52,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:52,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 213 transitions, 2911 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:52,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:52,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:52,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:52,962 INFO L124 PetriNetUnfolderBase]: 547/978 cut-off events. [2024-06-03 19:57:52,962 INFO L125 PetriNetUnfolderBase]: For 59464/59464 co-relation queries the response was YES. [2024-06-03 19:57:52,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7571 conditions, 978 events. 547/978 cut-off events. For 59464/59464 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4764 event pairs, 76 based on Foata normal form. 2/980 useless extension candidates. Maximal degree in co-relation 7476. Up to 742 conditions per place. [2024-06-03 19:57:52,969 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 162 selfloop transitions, 63 changer transitions 0/227 dead transitions. [2024-06-03 19:57:52,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 227 transitions, 3403 flow [2024-06-03 19:57:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:52,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-03 19:57:52,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-03 19:57:52,969 INFO L175 Difference]: Start difference. First operand has 216 places, 213 transitions, 2911 flow. Second operand 9 states and 106 transitions. [2024-06-03 19:57:52,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 227 transitions, 3403 flow [2024-06-03 19:57:53,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 227 transitions, 3275 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:53,120 INFO L231 Difference]: Finished difference. Result has 218 places, 214 transitions, 2927 flow [2024-06-03 19:57:53,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2927, PETRI_PLACES=218, PETRI_TRANSITIONS=214} [2024-06-03 19:57:53,121 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-03 19:57:53,121 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 214 transitions, 2927 flow [2024-06-03 19:57:53,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:53,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:53,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:53,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-03 19:57:53,121 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:53,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:53,122 INFO L85 PathProgramCache]: Analyzing trace with hash -764691196, now seen corresponding path program 1 times [2024-06-03 19:57:53,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:53,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857862508] [2024-06-03 19:57:53,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:53,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:53,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:53,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857862508] [2024-06-03 19:57:53,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857862508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:53,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:53,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:53,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586130219] [2024-06-03 19:57:53,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:53,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:53,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:53,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:53,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:53,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:53,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 214 transitions, 2927 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:53,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:53,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:53,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:54,420 INFO L124 PetriNetUnfolderBase]: 550/983 cut-off events. [2024-06-03 19:57:54,420 INFO L125 PetriNetUnfolderBase]: For 60541/60541 co-relation queries the response was YES. [2024-06-03 19:57:54,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7647 conditions, 983 events. 550/983 cut-off events. For 60541/60541 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4796 event pairs, 84 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 7551. Up to 682 conditions per place. [2024-06-03 19:57:54,427 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 150 selfloop transitions, 79 changer transitions 0/231 dead transitions. [2024-06-03 19:57:54,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 231 transitions, 3750 flow [2024-06-03 19:57:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:57:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:57:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:57:54,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 19:57:54,428 INFO L175 Difference]: Start difference. First operand has 218 places, 214 transitions, 2927 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:57:54,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 231 transitions, 3750 flow [2024-06-03 19:57:54,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 231 transitions, 3622 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:54,611 INFO L231 Difference]: Finished difference. Result has 221 places, 216 transitions, 2985 flow [2024-06-03 19:57:54,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2985, PETRI_PLACES=221, PETRI_TRANSITIONS=216} [2024-06-03 19:57:54,612 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-03 19:57:54,612 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 216 transitions, 2985 flow [2024-06-03 19:57:54,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:54,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:54,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:54,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-03 19:57:54,612 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:54,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:54,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1962043918, now seen corresponding path program 2 times [2024-06-03 19:57:54,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:54,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223516375] [2024-06-03 19:57:54,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:54,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:55,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:55,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:55,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223516375] [2024-06-03 19:57:55,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223516375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:55,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:55,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:55,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717788117] [2024-06-03 19:57:55,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:55,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:55,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:55,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:55,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:55,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:55,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 216 transitions, 2985 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:55,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:55,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:55,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:55,732 INFO L124 PetriNetUnfolderBase]: 548/980 cut-off events. [2024-06-03 19:57:55,732 INFO L125 PetriNetUnfolderBase]: For 61376/61376 co-relation queries the response was YES. [2024-06-03 19:57:55,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7661 conditions, 980 events. 548/980 cut-off events. For 61376/61376 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4797 event pairs, 83 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 7564. Up to 808 conditions per place. [2024-06-03 19:57:55,740 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 165 selfloop transitions, 60 changer transitions 0/227 dead transitions. [2024-06-03 19:57:55,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 227 transitions, 3463 flow [2024-06-03 19:57:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:55,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 19:57:55,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:57:55,741 INFO L175 Difference]: Start difference. First operand has 221 places, 216 transitions, 2985 flow. Second operand 9 states and 108 transitions. [2024-06-03 19:57:55,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 227 transitions, 3463 flow [2024-06-03 19:57:55,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 227 transitions, 3295 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 19:57:55,889 INFO L231 Difference]: Finished difference. Result has 222 places, 216 transitions, 2942 flow [2024-06-03 19:57:55,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2942, PETRI_PLACES=222, PETRI_TRANSITIONS=216} [2024-06-03 19:57:55,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-03 19:57:55,890 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 216 transitions, 2942 flow [2024-06-03 19:57:55,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:55,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:55,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:55,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-03 19:57:55,891 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:55,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash 15314107, now seen corresponding path program 4 times [2024-06-03 19:57:55,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:55,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367068022] [2024-06-03 19:57:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:55,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:56,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:56,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367068022] [2024-06-03 19:57:56,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367068022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:56,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:56,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:56,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252979860] [2024-06-03 19:57:56,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:56,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:56,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:56,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:56,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:56,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:56,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 216 transitions, 2942 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:56,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:56,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:56,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:56,828 INFO L124 PetriNetUnfolderBase]: 552/988 cut-off events. [2024-06-03 19:57:56,828 INFO L125 PetriNetUnfolderBase]: For 64717/64717 co-relation queries the response was YES. [2024-06-03 19:57:56,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7678 conditions, 988 events. 552/988 cut-off events. For 64717/64717 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4826 event pairs, 63 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 7580. Up to 558 conditions per place. [2024-06-03 19:57:56,836 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 171 selfloop transitions, 60 changer transitions 0/233 dead transitions. [2024-06-03 19:57:56,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 233 transitions, 3558 flow [2024-06-03 19:57:56,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:56,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:56,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 19:57:56,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-03 19:57:56,838 INFO L175 Difference]: Start difference. First operand has 222 places, 216 transitions, 2942 flow. Second operand 9 states and 98 transitions. [2024-06-03 19:57:56,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 233 transitions, 3558 flow [2024-06-03 19:57:57,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 233 transitions, 3471 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:57,027 INFO L231 Difference]: Finished difference. Result has 226 places, 217 transitions, 2989 flow [2024-06-03 19:57:57,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2855, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2989, PETRI_PLACES=226, PETRI_TRANSITIONS=217} [2024-06-03 19:57:57,027 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-03 19:57:57,027 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 217 transitions, 2989 flow [2024-06-03 19:57:57,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:57,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:57,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:57,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-03 19:57:57,028 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:57,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:57,028 INFO L85 PathProgramCache]: Analyzing trace with hash 412582009, now seen corresponding path program 5 times [2024-06-03 19:57:57,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:57,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122493534] [2024-06-03 19:57:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:57,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:57,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:57,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122493534] [2024-06-03 19:57:57,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122493534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:57,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:57,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:57,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734105528] [2024-06-03 19:57:57,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:57,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:57,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:57,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:57,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:57,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:57,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 217 transitions, 2989 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:57,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:57,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:57,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:57,972 INFO L124 PetriNetUnfolderBase]: 561/1007 cut-off events. [2024-06-03 19:57:57,973 INFO L125 PetriNetUnfolderBase]: For 67387/67387 co-relation queries the response was YES. [2024-06-03 19:57:57,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7843 conditions, 1007 events. 561/1007 cut-off events. For 67387/67387 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4968 event pairs, 76 based on Foata normal form. 2/1009 useless extension candidates. Maximal degree in co-relation 7744. Up to 773 conditions per place. [2024-06-03 19:57:57,981 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 175 selfloop transitions, 59 changer transitions 0/236 dead transitions. [2024-06-03 19:57:57,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 236 transitions, 3649 flow [2024-06-03 19:57:57,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-03 19:57:57,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-03 19:57:57,984 INFO L175 Difference]: Start difference. First operand has 226 places, 217 transitions, 2989 flow. Second operand 9 states and 110 transitions. [2024-06-03 19:57:57,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 236 transitions, 3649 flow [2024-06-03 19:57:58,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 236 transitions, 3550 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:58,145 INFO L231 Difference]: Finished difference. Result has 230 places, 219 transitions, 3047 flow [2024-06-03 19:57:58,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2891, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3047, PETRI_PLACES=230, PETRI_TRANSITIONS=219} [2024-06-03 19:57:58,146 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-03 19:57:58,146 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 219 transitions, 3047 flow [2024-06-03 19:57:58,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:58,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:58,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:58,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-03 19:57:58,147 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:58,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:58,147 INFO L85 PathProgramCache]: Analyzing trace with hash 412585729, now seen corresponding path program 6 times [2024-06-03 19:57:58,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:58,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069294442] [2024-06-03 19:57:58,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:58,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:58,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:58,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069294442] [2024-06-03 19:57:58,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069294442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:58,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:58,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:58,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691861219] [2024-06-03 19:57:58,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:58,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:58,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:58,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:58,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:58,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:58,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 219 transitions, 3047 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:58,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:58,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:58,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:59,137 INFO L124 PetriNetUnfolderBase]: 558/1002 cut-off events. [2024-06-03 19:57:59,137 INFO L125 PetriNetUnfolderBase]: For 66865/66865 co-relation queries the response was YES. [2024-06-03 19:57:59,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7787 conditions, 1002 events. 558/1002 cut-off events. For 66865/66865 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4943 event pairs, 77 based on Foata normal form. 2/1004 useless extension candidates. Maximal degree in co-relation 7686. Up to 806 conditions per place. [2024-06-03 19:57:59,144 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 173 selfloop transitions, 58 changer transitions 0/233 dead transitions. [2024-06-03 19:57:59,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 233 transitions, 3560 flow [2024-06-03 19:57:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:59,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 19:57:59,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-03 19:57:59,145 INFO L175 Difference]: Start difference. First operand has 230 places, 219 transitions, 3047 flow. Second operand 9 states and 107 transitions. [2024-06-03 19:57:59,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 233 transitions, 3560 flow [2024-06-03 19:57:59,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 233 transitions, 3414 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:59,310 INFO L231 Difference]: Finished difference. Result has 232 places, 219 transitions, 3021 flow [2024-06-03 19:57:59,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3021, PETRI_PLACES=232, PETRI_TRANSITIONS=219} [2024-06-03 19:57:59,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-03 19:57:59,310 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 219 transitions, 3021 flow [2024-06-03 19:57:59,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:59,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:59,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:59,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-03 19:57:59,310 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:59,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:59,311 INFO L85 PathProgramCache]: Analyzing trace with hash 412729879, now seen corresponding path program 7 times [2024-06-03 19:57:59,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:59,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47774979] [2024-06-03 19:57:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:59,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:00,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:00,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47774979] [2024-06-03 19:58:00,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47774979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:00,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:00,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:00,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535717208] [2024-06-03 19:58:00,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:00,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:00,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:00,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:00,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:00,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:00,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 219 transitions, 3021 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:00,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:00,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:00,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:00,612 INFO L124 PetriNetUnfolderBase]: 562/1010 cut-off events. [2024-06-03 19:58:00,612 INFO L125 PetriNetUnfolderBase]: For 68954/68954 co-relation queries the response was YES. [2024-06-03 19:58:00,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7804 conditions, 1010 events. 562/1010 cut-off events. For 68954/68954 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5005 event pairs, 77 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 7702. Up to 808 conditions per place. [2024-06-03 19:58:00,619 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 174 selfloop transitions, 59 changer transitions 0/235 dead transitions. [2024-06-03 19:58:00,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 235 transitions, 3556 flow [2024-06-03 19:58:00,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:00,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:00,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 19:58:00,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:58:00,627 INFO L175 Difference]: Start difference. First operand has 232 places, 219 transitions, 3021 flow. Second operand 10 states and 115 transitions. [2024-06-03 19:58:00,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 235 transitions, 3556 flow [2024-06-03 19:58:00,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 235 transitions, 3434 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:00,809 INFO L231 Difference]: Finished difference. Result has 235 places, 220 transitions, 3041 flow [2024-06-03 19:58:00,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2899, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3041, PETRI_PLACES=235, PETRI_TRANSITIONS=220} [2024-06-03 19:58:00,810 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-03 19:58:00,810 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 220 transitions, 3041 flow [2024-06-03 19:58:00,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:00,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:00,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:00,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-03 19:58:00,810 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:00,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:00,810 INFO L85 PathProgramCache]: Analyzing trace with hash 412730034, now seen corresponding path program 3 times [2024-06-03 19:58:00,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:00,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628688079] [2024-06-03 19:58:00,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:00,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:01,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:01,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628688079] [2024-06-03 19:58:01,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628688079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:01,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:01,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:01,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811243743] [2024-06-03 19:58:01,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:01,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:01,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:01,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:01,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:01,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:01,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 220 transitions, 3041 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:01,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:01,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:01,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:02,247 INFO L124 PetriNetUnfolderBase]: 570/1023 cut-off events. [2024-06-03 19:58:02,247 INFO L125 PetriNetUnfolderBase]: For 71295/71295 co-relation queries the response was YES. [2024-06-03 19:58:02,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7965 conditions, 1023 events. 570/1023 cut-off events. For 71295/71295 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5069 event pairs, 83 based on Foata normal form. 1/1024 useless extension candidates. Maximal degree in co-relation 7862. Up to 720 conditions per place. [2024-06-03 19:58:02,255 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 79 changer transitions 0/242 dead transitions. [2024-06-03 19:58:02,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 242 transitions, 3972 flow [2024-06-03 19:58:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:58:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:58:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 19:58:02,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:58:02,256 INFO L175 Difference]: Start difference. First operand has 235 places, 220 transitions, 3041 flow. Second operand 11 states and 132 transitions. [2024-06-03 19:58:02,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 242 transitions, 3972 flow [2024-06-03 19:58:02,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 242 transitions, 3861 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:02,460 INFO L231 Difference]: Finished difference. Result has 238 places, 224 transitions, 3149 flow [2024-06-03 19:58:02,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2936, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3149, PETRI_PLACES=238, PETRI_TRANSITIONS=224} [2024-06-03 19:58:02,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-03 19:58:02,460 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 224 transitions, 3149 flow [2024-06-03 19:58:02,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:02,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:02,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:02,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-03 19:58:02,461 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:02,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:02,461 INFO L85 PathProgramCache]: Analyzing trace with hash 412735614, now seen corresponding path program 4 times [2024-06-03 19:58:02,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:02,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331279620] [2024-06-03 19:58:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:02,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:03,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:03,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331279620] [2024-06-03 19:58:03,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331279620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:03,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:03,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:03,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559033810] [2024-06-03 19:58:03,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:03,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:03,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:03,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:03,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:03,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:03,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 224 transitions, 3149 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:03,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:03,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:03,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:03,753 INFO L124 PetriNetUnfolderBase]: 568/1020 cut-off events. [2024-06-03 19:58:03,753 INFO L125 PetriNetUnfolderBase]: For 70035/70035 co-relation queries the response was YES. [2024-06-03 19:58:03,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7942 conditions, 1020 events. 568/1020 cut-off events. For 70035/70035 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5076 event pairs, 82 based on Foata normal form. 1/1021 useless extension candidates. Maximal degree in co-relation 7839. Up to 857 conditions per place. [2024-06-03 19:58:03,762 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 180 selfloop transitions, 56 changer transitions 0/238 dead transitions. [2024-06-03 19:58:03,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 238 transitions, 3672 flow [2024-06-03 19:58:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:03,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 19:58:03,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:58:03,763 INFO L175 Difference]: Start difference. First operand has 238 places, 224 transitions, 3149 flow. Second operand 10 states and 115 transitions. [2024-06-03 19:58:03,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 238 transitions, 3672 flow [2024-06-03 19:58:03,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 238 transitions, 3502 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:03,955 INFO L231 Difference]: Finished difference. Result has 240 places, 225 transitions, 3113 flow [2024-06-03 19:58:03,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2979, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3113, PETRI_PLACES=240, PETRI_TRANSITIONS=225} [2024-06-03 19:58:03,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-03 19:58:03,955 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 225 transitions, 3113 flow [2024-06-03 19:58:03,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:03,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:03,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:03,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-03 19:58:03,955 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:03,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:03,956 INFO L85 PathProgramCache]: Analyzing trace with hash 412735831, now seen corresponding path program 1 times [2024-06-03 19:58:03,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:03,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108569689] [2024-06-03 19:58:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:04,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:04,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:04,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108569689] [2024-06-03 19:58:04,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108569689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:04,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:04,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:04,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181766248] [2024-06-03 19:58:04,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:04,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:04,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:04,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:04,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:04,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:04,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 225 transitions, 3113 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:04,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:04,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:04,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:05,336 INFO L124 PetriNetUnfolderBase]: 580/1040 cut-off events. [2024-06-03 19:58:05,336 INFO L125 PetriNetUnfolderBase]: For 76568/76568 co-relation queries the response was YES. [2024-06-03 19:58:05,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8009 conditions, 1040 events. 580/1040 cut-off events. For 76568/76568 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5186 event pairs, 92 based on Foata normal form. 4/1044 useless extension candidates. Maximal degree in co-relation 7905. Up to 528 conditions per place. [2024-06-03 19:58:05,346 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 170 selfloop transitions, 78 changer transitions 0/250 dead transitions. [2024-06-03 19:58:05,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 250 transitions, 4077 flow [2024-06-03 19:58:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-03 19:58:05,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-03 19:58:05,347 INFO L175 Difference]: Start difference. First operand has 240 places, 225 transitions, 3113 flow. Second operand 10 states and 133 transitions. [2024-06-03 19:58:05,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 250 transitions, 4077 flow [2024-06-03 19:58:05,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 250 transitions, 3960 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:05,555 INFO L231 Difference]: Finished difference. Result has 243 places, 228 transitions, 3193 flow [2024-06-03 19:58:05,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2996, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3193, PETRI_PLACES=243, PETRI_TRANSITIONS=228} [2024-06-03 19:58:05,555 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-03 19:58:05,555 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 228 transitions, 3193 flow [2024-06-03 19:58:05,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:05,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:05,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:05,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-03 19:58:05,556 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:05,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash 418092414, now seen corresponding path program 5 times [2024-06-03 19:58:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:05,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575331796] [2024-06-03 19:58:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:05,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:06,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:06,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:06,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575331796] [2024-06-03 19:58:06,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575331796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:06,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:06,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:06,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541126220] [2024-06-03 19:58:06,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:06,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:06,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:06,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:06,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:06,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:06,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 228 transitions, 3193 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:06,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:06,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:06,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:06,999 INFO L124 PetriNetUnfolderBase]: 583/1045 cut-off events. [2024-06-03 19:58:06,999 INFO L125 PetriNetUnfolderBase]: For 74955/74955 co-relation queries the response was YES. [2024-06-03 19:58:07,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8198 conditions, 1045 events. 583/1045 cut-off events. For 74955/74955 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5226 event pairs, 86 based on Foata normal form. 1/1046 useless extension candidates. Maximal degree in co-relation 8093. Up to 742 conditions per place. [2024-06-03 19:58:07,008 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 158 selfloop transitions, 85 changer transitions 0/245 dead transitions. [2024-06-03 19:58:07,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 245 transitions, 3978 flow [2024-06-03 19:58:07,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:58:07,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:58:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 19:58:07,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 19:58:07,010 INFO L175 Difference]: Start difference. First operand has 243 places, 228 transitions, 3193 flow. Second operand 11 states and 128 transitions. [2024-06-03 19:58:07,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 245 transitions, 3978 flow [2024-06-03 19:58:07,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 245 transitions, 3799 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:07,198 INFO L231 Difference]: Finished difference. Result has 246 places, 230 transitions, 3216 flow [2024-06-03 19:58:07,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3016, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3216, PETRI_PLACES=246, PETRI_TRANSITIONS=230} [2024-06-03 19:58:07,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-03 19:58:07,199 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 230 transitions, 3216 flow [2024-06-03 19:58:07,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:07,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:07,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:07,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-03 19:58:07,199 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:07,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash 418092259, now seen corresponding path program 8 times [2024-06-03 19:58:07,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:07,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050573613] [2024-06-03 19:58:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:07,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:07,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:07,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050573613] [2024-06-03 19:58:07,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050573613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:07,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:07,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:07,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156496154] [2024-06-03 19:58:07,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:07,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:07,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:07,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:07,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:07,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:07,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 230 transitions, 3216 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:07,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:07,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:07,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:08,418 INFO L124 PetriNetUnfolderBase]: 580/1040 cut-off events. [2024-06-03 19:58:08,419 INFO L125 PetriNetUnfolderBase]: For 74935/74935 co-relation queries the response was YES. [2024-06-03 19:58:08,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8039 conditions, 1040 events. 580/1040 cut-off events. For 74935/74935 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5192 event pairs, 82 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 7933. Up to 844 conditions per place. [2024-06-03 19:58:08,427 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 181 selfloop transitions, 60 changer transitions 0/243 dead transitions. [2024-06-03 19:58:08,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 243 transitions, 3730 flow [2024-06-03 19:58:08,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 19:58:08,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-03 19:58:08,428 INFO L175 Difference]: Start difference. First operand has 246 places, 230 transitions, 3216 flow. Second operand 10 states and 112 transitions. [2024-06-03 19:58:08,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 243 transitions, 3730 flow [2024-06-03 19:58:08,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 243 transitions, 3504 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-03 19:58:08,619 INFO L231 Difference]: Finished difference. Result has 246 places, 230 transitions, 3114 flow [2024-06-03 19:58:08,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2990, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3114, PETRI_PLACES=246, PETRI_TRANSITIONS=230} [2024-06-03 19:58:08,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-03 19:58:08,620 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 230 transitions, 3114 flow [2024-06-03 19:58:08,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:08,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:08,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:08,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-03 19:58:08,621 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:08,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:08,621 INFO L85 PathProgramCache]: Analyzing trace with hash 418097994, now seen corresponding path program 6 times [2024-06-03 19:58:08,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:08,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443666279] [2024-06-03 19:58:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:08,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:09,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:09,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443666279] [2024-06-03 19:58:09,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443666279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:09,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:09,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:09,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944384184] [2024-06-03 19:58:09,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:09,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:09,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:09,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:09,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:09,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:09,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 230 transitions, 3114 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:09,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:09,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:09,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:09,923 INFO L124 PetriNetUnfolderBase]: 583/1045 cut-off events. [2024-06-03 19:58:09,923 INFO L125 PetriNetUnfolderBase]: For 74638/74638 co-relation queries the response was YES. [2024-06-03 19:58:09,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8009 conditions, 1045 events. 583/1045 cut-off events. For 74638/74638 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5223 event pairs, 80 based on Foata normal form. 1/1046 useless extension candidates. Maximal degree in co-relation 7902. Up to 882 conditions per place. [2024-06-03 19:58:09,932 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 188 selfloop transitions, 54 changer transitions 0/244 dead transitions. [2024-06-03 19:58:09,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 244 transitions, 3649 flow [2024-06-03 19:58:09,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:09,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 19:58:09,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-03 19:58:09,933 INFO L175 Difference]: Start difference. First operand has 246 places, 230 transitions, 3114 flow. Second operand 10 states and 112 transitions. [2024-06-03 19:58:09,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 244 transitions, 3649 flow [2024-06-03 19:58:10,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 244 transitions, 3526 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:10,111 INFO L231 Difference]: Finished difference. Result has 248 places, 232 transitions, 3129 flow [2024-06-03 19:58:10,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3129, PETRI_PLACES=248, PETRI_TRANSITIONS=232} [2024-06-03 19:58:10,112 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-03 19:58:10,112 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 232 transitions, 3129 flow [2024-06-03 19:58:10,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:10,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:10,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:10,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-03 19:58:10,112 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:10,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:10,112 INFO L85 PathProgramCache]: Analyzing trace with hash 418098211, now seen corresponding path program 2 times [2024-06-03 19:58:10,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:10,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035991592] [2024-06-03 19:58:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:10,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:10,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:10,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035991592] [2024-06-03 19:58:10,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035991592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:10,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:10,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:10,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786426173] [2024-06-03 19:58:10,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:10,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:10,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:10,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:10,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:10,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 232 transitions, 3129 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:10,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:10,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:10,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:11,412 INFO L124 PetriNetUnfolderBase]: 589/1055 cut-off events. [2024-06-03 19:58:11,412 INFO L125 PetriNetUnfolderBase]: For 76583/76583 co-relation queries the response was YES. [2024-06-03 19:58:11,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8053 conditions, 1055 events. 589/1055 cut-off events. For 76583/76583 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5286 event pairs, 92 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 7946. Up to 529 conditions per place. [2024-06-03 19:58:11,421 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 167 selfloop transitions, 88 changer transitions 0/257 dead transitions. [2024-06-03 19:58:11,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 257 transitions, 4129 flow [2024-06-03 19:58:11,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:11,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-03 19:58:11,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-03 19:58:11,423 INFO L175 Difference]: Start difference. First operand has 248 places, 232 transitions, 3129 flow. Second operand 10 states and 131 transitions. [2024-06-03 19:58:11,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 257 transitions, 4129 flow [2024-06-03 19:58:11,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 257 transitions, 4028 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:11,644 INFO L231 Difference]: Finished difference. Result has 252 places, 236 transitions, 3271 flow [2024-06-03 19:58:11,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3028, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3271, PETRI_PLACES=252, PETRI_TRANSITIONS=236} [2024-06-03 19:58:11,644 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-03 19:58:11,644 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 236 transitions, 3271 flow [2024-06-03 19:58:11,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:11,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:11,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:11,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-03 19:58:11,645 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:11,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:11,645 INFO L85 PathProgramCache]: Analyzing trace with hash 418300021, now seen corresponding path program 3 times [2024-06-03 19:58:11,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:11,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161794224] [2024-06-03 19:58:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:11,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:12,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:12,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161794224] [2024-06-03 19:58:12,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161794224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:12,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:12,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:12,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942458470] [2024-06-03 19:58:12,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:12,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:12,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:12,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:12,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:12,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:12,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 236 transitions, 3271 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:12,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:12,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:12,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:12,971 INFO L124 PetriNetUnfolderBase]: 595/1065 cut-off events. [2024-06-03 19:58:12,971 INFO L125 PetriNetUnfolderBase]: For 79582/79582 co-relation queries the response was YES. [2024-06-03 19:58:12,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8333 conditions, 1065 events. 595/1065 cut-off events. For 79582/79582 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5348 event pairs, 90 based on Foata normal form. 2/1067 useless extension candidates. Maximal degree in co-relation 8224. Up to 531 conditions per place. [2024-06-03 19:58:12,979 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 164 selfloop transitions, 93 changer transitions 0/259 dead transitions. [2024-06-03 19:58:12,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 259 transitions, 4266 flow [2024-06-03 19:58:12,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:12,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-03 19:58:12,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-03 19:58:12,983 INFO L175 Difference]: Start difference. First operand has 252 places, 236 transitions, 3271 flow. Second operand 10 states and 131 transitions. [2024-06-03 19:58:12,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 259 transitions, 4266 flow [2024-06-03 19:58:13,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 259 transitions, 4117 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-03 19:58:13,195 INFO L231 Difference]: Finished difference. Result has 256 places, 238 transitions, 3344 flow [2024-06-03 19:58:13,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3125, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3344, PETRI_PLACES=256, PETRI_TRANSITIONS=238} [2024-06-03 19:58:13,196 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-03 19:58:13,196 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 238 transitions, 3344 flow [2024-06-03 19:58:13,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:13,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:13,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:13,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-03 19:58:13,196 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:13,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:13,197 INFO L85 PathProgramCache]: Analyzing trace with hash 418299804, now seen corresponding path program 7 times [2024-06-03 19:58:13,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:13,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602126103] [2024-06-03 19:58:13,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:13,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:14,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:14,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602126103] [2024-06-03 19:58:14,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602126103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:14,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:14,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:14,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653948114] [2024-06-03 19:58:14,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:14,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:14,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:14,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:14,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:14,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:14,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 238 transitions, 3344 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:14,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:14,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:14,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:14,576 INFO L124 PetriNetUnfolderBase]: 593/1062 cut-off events. [2024-06-03 19:58:14,576 INFO L125 PetriNetUnfolderBase]: For 78050/78050 co-relation queries the response was YES. [2024-06-03 19:58:14,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8311 conditions, 1062 events. 593/1062 cut-off events. For 78050/78050 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5338 event pairs, 92 based on Foata normal form. 1/1063 useless extension candidates. Maximal degree in co-relation 8201. Up to 759 conditions per place. [2024-06-03 19:58:14,586 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 160 selfloop transitions, 89 changer transitions 0/251 dead transitions. [2024-06-03 19:58:14,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 251 transitions, 4000 flow [2024-06-03 19:58:14,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:58:14,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 19:58:14,587 INFO L175 Difference]: Start difference. First operand has 256 places, 238 transitions, 3344 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:58:14,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 251 transitions, 4000 flow [2024-06-03 19:58:14,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 251 transitions, 3793 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:14,814 INFO L231 Difference]: Finished difference. Result has 258 places, 238 transitions, 3320 flow [2024-06-03 19:58:14,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3137, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3320, PETRI_PLACES=258, PETRI_TRANSITIONS=238} [2024-06-03 19:58:14,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-03 19:58:14,815 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 238 transitions, 3320 flow [2024-06-03 19:58:14,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:14,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:14,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:14,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-03 19:58:14,815 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:14,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:14,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1615654603, now seen corresponding path program 4 times [2024-06-03 19:58:14,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:14,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188402184] [2024-06-03 19:58:14,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:14,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:15,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:15,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188402184] [2024-06-03 19:58:15,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188402184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:15,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:15,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:15,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540393597] [2024-06-03 19:58:15,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:15,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:15,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:15,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:15,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:15,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:15,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 238 transitions, 3320 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:15,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:15,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:15,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:16,199 INFO L124 PetriNetUnfolderBase]: 589/1056 cut-off events. [2024-06-03 19:58:16,199 INFO L125 PetriNetUnfolderBase]: For 78113/78113 co-relation queries the response was YES. [2024-06-03 19:58:16,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8097 conditions, 1056 events. 589/1056 cut-off events. For 78113/78113 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5311 event pairs, 91 based on Foata normal form. 2/1058 useless extension candidates. Maximal degree in co-relation 7986. Up to 529 conditions per place. [2024-06-03 19:58:16,208 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 97 changer transitions 0/257 dead transitions. [2024-06-03 19:58:16,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 257 transitions, 4158 flow [2024-06-03 19:58:16,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-03 19:58:16,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-03 19:58:16,209 INFO L175 Difference]: Start difference. First operand has 258 places, 238 transitions, 3320 flow. Second operand 10 states and 129 transitions. [2024-06-03 19:58:16,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 257 transitions, 4158 flow [2024-06-03 19:58:16,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 257 transitions, 3954 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-03 19:58:16,444 INFO L231 Difference]: Finished difference. Result has 259 places, 238 transitions, 3315 flow [2024-06-03 19:58:16,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3315, PETRI_PLACES=259, PETRI_TRANSITIONS=238} [2024-06-03 19:58:16,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-03 19:58:16,445 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 238 transitions, 3315 flow [2024-06-03 19:58:16,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:16,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:16,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:16,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-03 19:58:16,446 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:16,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:16,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1203737827, now seen corresponding path program 9 times [2024-06-03 19:58:16,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:16,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006656071] [2024-06-03 19:58:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:16,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:17,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:17,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006656071] [2024-06-03 19:58:17,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006656071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:17,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:17,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:58:17,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880871609] [2024-06-03 19:58:17,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:17,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:58:17,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:17,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:58:17,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:58:17,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:17,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 238 transitions, 3315 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:17,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:17,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:17,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:17,358 INFO L124 PetriNetUnfolderBase]: 593/1064 cut-off events. [2024-06-03 19:58:17,358 INFO L125 PetriNetUnfolderBase]: For 80321/80321 co-relation queries the response was YES. [2024-06-03 19:58:17,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8194 conditions, 1064 events. 593/1064 cut-off events. For 80321/80321 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5346 event pairs, 59 based on Foata normal form. 2/1066 useless extension candidates. Maximal degree in co-relation 8082. Up to 617 conditions per place. [2024-06-03 19:58:17,368 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 181 selfloop transitions, 69 changer transitions 0/252 dead transitions. [2024-06-03 19:58:17,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 252 transitions, 3984 flow [2024-06-03 19:58:17,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:58:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:58:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-03 19:58:17,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-03 19:58:17,369 INFO L175 Difference]: Start difference. First operand has 259 places, 238 transitions, 3315 flow. Second operand 8 states and 89 transitions. [2024-06-03 19:58:17,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 252 transitions, 3984 flow [2024-06-03 19:58:17,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 252 transitions, 3785 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 19:58:17,595 INFO L231 Difference]: Finished difference. Result has 258 places, 239 transitions, 3272 flow [2024-06-03 19:58:17,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3272, PETRI_PLACES=258, PETRI_TRANSITIONS=239} [2024-06-03 19:58:17,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-03 19:58:17,596 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 239 transitions, 3272 flow [2024-06-03 19:58:17,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:17,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:17,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:17,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-03 19:58:17,596 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:17,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:17,597 INFO L85 PathProgramCache]: Analyzing trace with hash -334977345, now seen corresponding path program 10 times [2024-06-03 19:58:17,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:17,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222808435] [2024-06-03 19:58:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:17,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:18,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:18,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222808435] [2024-06-03 19:58:18,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222808435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:18,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:18,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:58:18,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081778594] [2024-06-03 19:58:18,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:18,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:58:18,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:18,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:58:18,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:58:18,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:18,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 239 transitions, 3272 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:18,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:18,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:18,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:18,519 INFO L124 PetriNetUnfolderBase]: 604/1085 cut-off events. [2024-06-03 19:58:18,519 INFO L125 PetriNetUnfolderBase]: For 86830/86830 co-relation queries the response was YES. [2024-06-03 19:58:18,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8382 conditions, 1085 events. 604/1085 cut-off events. For 86830/86830 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5502 event pairs, 80 based on Foata normal form. 2/1087 useless extension candidates. Maximal degree in co-relation 8269. Up to 810 conditions per place. [2024-06-03 19:58:18,527 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 180 selfloop transitions, 71 changer transitions 0/253 dead transitions. [2024-06-03 19:58:18,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 253 transitions, 3956 flow [2024-06-03 19:58:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:58:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:58:18,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-03 19:58:18,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 19:58:18,528 INFO L175 Difference]: Start difference. First operand has 258 places, 239 transitions, 3272 flow. Second operand 8 states and 94 transitions. [2024-06-03 19:58:18,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 253 transitions, 3956 flow [2024-06-03 19:58:18,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 253 transitions, 3841 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:18,769 INFO L231 Difference]: Finished difference. Result has 259 places, 241 transitions, 3336 flow [2024-06-03 19:58:18,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3163, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3336, PETRI_PLACES=259, PETRI_TRANSITIONS=241} [2024-06-03 19:58:18,769 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-03 19:58:18,769 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 241 transitions, 3336 flow [2024-06-03 19:58:18,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:18,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:18,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:18,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-03 19:58:18,770 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:18,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:18,770 INFO L85 PathProgramCache]: Analyzing trace with hash -334973470, now seen corresponding path program 8 times [2024-06-03 19:58:18,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:18,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086036662] [2024-06-03 19:58:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:18,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:19,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:19,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086036662] [2024-06-03 19:58:19,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086036662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:19,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:19,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:58:19,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332948133] [2024-06-03 19:58:19,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:19,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:58:19,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:19,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:58:19,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:58:19,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:19,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 241 transitions, 3336 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:19,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:19,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:19,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:19,823 INFO L124 PetriNetUnfolderBase]: 600/1078 cut-off events. [2024-06-03 19:58:19,823 INFO L125 PetriNetUnfolderBase]: For 80802/80802 co-relation queries the response was YES. [2024-06-03 19:58:19,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8287 conditions, 1078 events. 600/1078 cut-off events. For 80802/80802 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5463 event pairs, 184 based on Foata normal form. 1/1079 useless extension candidates. Maximal degree in co-relation 8175. Up to 907 conditions per place. [2024-06-03 19:58:19,831 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 202 selfloop transitions, 48 changer transitions 0/252 dead transitions. [2024-06-03 19:58:19,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 252 transitions, 4131 flow [2024-06-03 19:58:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:19,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-03 19:58:19,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 19:58:19,832 INFO L175 Difference]: Start difference. First operand has 259 places, 241 transitions, 3336 flow. Second operand 9 states and 105 transitions. [2024-06-03 19:58:19,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 252 transitions, 4131 flow [2024-06-03 19:58:20,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 252 transitions, 4035 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-03 19:58:20,077 INFO L231 Difference]: Finished difference. Result has 263 places, 241 transitions, 3349 flow [2024-06-03 19:58:20,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3349, PETRI_PLACES=263, PETRI_TRANSITIONS=241} [2024-06-03 19:58:20,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-03 19:58:20,077 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 241 transitions, 3349 flow [2024-06-03 19:58:20,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:20,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:20,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:20,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-03 19:58:20,078 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:20,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:20,078 INFO L85 PathProgramCache]: Analyzing trace with hash -334973625, now seen corresponding path program 11 times [2024-06-03 19:58:20,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:20,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168933564] [2024-06-03 19:58:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:20,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:20,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:20,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168933564] [2024-06-03 19:58:20,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168933564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:20,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:20,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:58:20,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493611465] [2024-06-03 19:58:20,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:20,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:58:20,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:20,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:58:20,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:58:20,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:20,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 241 transitions, 3349 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:20,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:20,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:20,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:20,956 INFO L124 PetriNetUnfolderBase]: 597/1073 cut-off events. [2024-06-03 19:58:20,956 INFO L125 PetriNetUnfolderBase]: For 78055/78055 co-relation queries the response was YES. [2024-06-03 19:58:20,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8208 conditions, 1073 events. 597/1073 cut-off events. For 78055/78055 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5451 event pairs, 83 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 8095. Up to 871 conditions per place. [2024-06-03 19:58:20,966 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 178 selfloop transitions, 71 changer transitions 0/251 dead transitions. [2024-06-03 19:58:20,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 251 transitions, 3871 flow [2024-06-03 19:58:20,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:58:20,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:58:20,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-03 19:58:20,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 19:58:20,966 INFO L175 Difference]: Start difference. First operand has 263 places, 241 transitions, 3349 flow. Second operand 8 states and 94 transitions. [2024-06-03 19:58:20,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 251 transitions, 3871 flow [2024-06-03 19:58:21,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 251 transitions, 3689 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-03 19:58:21,186 INFO L231 Difference]: Finished difference. Result has 261 places, 241 transitions, 3315 flow [2024-06-03 19:58:21,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3167, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3315, PETRI_PLACES=261, PETRI_TRANSITIONS=241} [2024-06-03 19:58:21,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-03 19:58:21,187 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 241 transitions, 3315 flow [2024-06-03 19:58:21,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:21,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:21,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:21,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-03 19:58:21,187 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:21,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:21,188 INFO L85 PathProgramCache]: Analyzing trace with hash -248131930, now seen corresponding path program 9 times [2024-06-03 19:58:21,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:21,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870323185] [2024-06-03 19:58:21,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:21,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:22,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:22,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870323185] [2024-06-03 19:58:22,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870323185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:22,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:22,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:22,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746756589] [2024-06-03 19:58:22,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:22,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:22,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:22,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:22,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:22,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:22,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 241 transitions, 3315 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:22,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:22,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:22,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:22,407 INFO L124 PetriNetUnfolderBase]: 600/1078 cut-off events. [2024-06-03 19:58:22,407 INFO L125 PetriNetUnfolderBase]: For 78021/78021 co-relation queries the response was YES. [2024-06-03 19:58:22,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8258 conditions, 1078 events. 600/1078 cut-off events. For 78021/78021 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5489 event pairs, 88 based on Foata normal form. 1/1079 useless extension candidates. Maximal degree in co-relation 8146. Up to 912 conditions per place. [2024-06-03 19:58:22,417 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 186 selfloop transitions, 65 changer transitions 0/253 dead transitions. [2024-06-03 19:58:22,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 253 transitions, 3862 flow [2024-06-03 19:58:22,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-03 19:58:22,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-03 19:58:22,418 INFO L175 Difference]: Start difference. First operand has 261 places, 241 transitions, 3315 flow. Second operand 9 states and 101 transitions. [2024-06-03 19:58:22,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 253 transitions, 3862 flow [2024-06-03 19:58:22,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 253 transitions, 3701 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:22,635 INFO L231 Difference]: Finished difference. Result has 262 places, 243 transitions, 3317 flow [2024-06-03 19:58:22,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3154, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3317, PETRI_PLACES=262, PETRI_TRANSITIONS=243} [2024-06-03 19:58:22,635 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-03 19:58:22,635 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 243 transitions, 3317 flow [2024-06-03 19:58:22,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:22,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:22,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:22,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-03 19:58:22,636 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:22,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:22,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1107606686, now seen corresponding path program 10 times [2024-06-03 19:58:22,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:22,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833894469] [2024-06-03 19:58:22,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:22,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:23,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:23,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833894469] [2024-06-03 19:58:23,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833894469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:23,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:23,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:58:23,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353955969] [2024-06-03 19:58:23,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:23,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:58:23,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:23,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:58:23,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:58:23,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:23,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 243 transitions, 3317 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:23,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:23,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:23,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:23,737 INFO L124 PetriNetUnfolderBase]: 598/1075 cut-off events. [2024-06-03 19:58:23,737 INFO L125 PetriNetUnfolderBase]: For 75587/75587 co-relation queries the response was YES. [2024-06-03 19:58:23,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8154 conditions, 1075 events. 598/1075 cut-off events. For 75587/75587 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5461 event pairs, 90 based on Foata normal form. 1/1076 useless extension candidates. Maximal degree in co-relation 8042. Up to 891 conditions per place. [2024-06-03 19:58:23,746 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 72 changer transitions 0/252 dead transitions. [2024-06-03 19:58:23,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 252 transitions, 3839 flow [2024-06-03 19:58:23,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:58:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:58:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-03 19:58:23,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-03 19:58:23,747 INFO L175 Difference]: Start difference. First operand has 262 places, 243 transitions, 3317 flow. Second operand 8 states and 95 transitions. [2024-06-03 19:58:23,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 252 transitions, 3839 flow [2024-06-03 19:58:23,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 252 transitions, 3698 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:23,967 INFO L231 Difference]: Finished difference. Result has 262 places, 243 transitions, 3328 flow [2024-06-03 19:58:23,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3176, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3328, PETRI_PLACES=262, PETRI_TRANSITIONS=243} [2024-06-03 19:58:23,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-03 19:58:23,967 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 243 transitions, 3328 flow [2024-06-03 19:58:23,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:23,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:23,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:23,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-03 19:58:23,968 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:23,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:23,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1295953263, now seen corresponding path program 12 times [2024-06-03 19:58:23,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:23,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098653739] [2024-06-03 19:58:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:23,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:24,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:24,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098653739] [2024-06-03 19:58:24,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098653739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:24,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:24,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:58:24,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481071974] [2024-06-03 19:58:24,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:24,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:58:24,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:24,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:58:24,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:58:24,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:24,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 243 transitions, 3328 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:24,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:24,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:24,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:24,875 INFO L124 PetriNetUnfolderBase]: 602/1083 cut-off events. [2024-06-03 19:58:24,875 INFO L125 PetriNetUnfolderBase]: For 77916/77916 co-relation queries the response was YES. [2024-06-03 19:58:24,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8190 conditions, 1083 events. 602/1083 cut-off events. For 77916/77916 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5528 event pairs, 55 based on Foata normal form. 2/1085 useless extension candidates. Maximal degree in co-relation 8078. Up to 770 conditions per place. [2024-06-03 19:58:24,885 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 180 selfloop transitions, 77 changer transitions 0/259 dead transitions. [2024-06-03 19:58:24,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 259 transitions, 4032 flow [2024-06-03 19:58:24,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:58:24,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:58:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 19:58:24,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-03 19:58:24,886 INFO L175 Difference]: Start difference. First operand has 262 places, 243 transitions, 3328 flow. Second operand 8 states and 97 transitions. [2024-06-03 19:58:24,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 259 transitions, 4032 flow [2024-06-03 19:58:25,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 259 transitions, 3879 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:25,110 INFO L231 Difference]: Finished difference. Result has 263 places, 244 transitions, 3349 flow [2024-06-03 19:58:25,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3177, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3349, PETRI_PLACES=263, PETRI_TRANSITIONS=244} [2024-06-03 19:58:25,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-03 19:58:25,111 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 244 transitions, 3349 flow [2024-06-03 19:58:25,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:25,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:25,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:25,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-03 19:58:25,111 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:25,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:25,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1295949543, now seen corresponding path program 13 times [2024-06-03 19:58:25,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:25,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655234264] [2024-06-03 19:58:25,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:25,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:25,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:25,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655234264] [2024-06-03 19:58:25,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655234264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:25,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:25,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:58:25,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759294936] [2024-06-03 19:58:25,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:25,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:58:25,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:25,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:58:25,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:58:25,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:25,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 244 transitions, 3349 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:25,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:25,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:25,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:26,011 INFO L124 PetriNetUnfolderBase]: 599/1078 cut-off events. [2024-06-03 19:58:26,011 INFO L125 PetriNetUnfolderBase]: For 74099/74099 co-relation queries the response was YES. [2024-06-03 19:58:26,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8085 conditions, 1078 events. 599/1078 cut-off events. For 74099/74099 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5502 event pairs, 87 based on Foata normal form. 2/1080 useless extension candidates. Maximal degree in co-relation 7973. Up to 876 conditions per place. [2024-06-03 19:58:26,020 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 71 changer transitions 0/257 dead transitions. [2024-06-03 19:58:26,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 257 transitions, 3901 flow [2024-06-03 19:58:26,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:58:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:58:26,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-03 19:58:26,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:58:26,021 INFO L175 Difference]: Start difference. First operand has 263 places, 244 transitions, 3349 flow. Second operand 8 states and 96 transitions. [2024-06-03 19:58:26,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 257 transitions, 3901 flow [2024-06-03 19:58:26,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 257 transitions, 3685 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:26,243 INFO L231 Difference]: Finished difference. Result has 263 places, 244 transitions, 3281 flow [2024-06-03 19:58:26,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3281, PETRI_PLACES=263, PETRI_TRANSITIONS=244} [2024-06-03 19:58:26,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-03 19:58:26,244 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 244 transitions, 3281 flow [2024-06-03 19:58:26,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:26,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:26,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:26,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-03 19:58:26,244 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:26,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:26,244 INFO L85 PathProgramCache]: Analyzing trace with hash -963716156, now seen corresponding path program 11 times [2024-06-03 19:58:26,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:26,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443607155] [2024-06-03 19:58:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:26,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:26,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:26,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443607155] [2024-06-03 19:58:26,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443607155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:26,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:26,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:58:26,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038459457] [2024-06-03 19:58:26,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:26,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:58:26,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:26,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:58:26,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:58:27,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:27,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 244 transitions, 3281 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:27,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:27,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:27,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:27,353 INFO L124 PetriNetUnfolderBase]: 602/1083 cut-off events. [2024-06-03 19:58:27,353 INFO L125 PetriNetUnfolderBase]: For 71420/71420 co-relation queries the response was YES. [2024-06-03 19:58:27,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7946 conditions, 1083 events. 602/1083 cut-off events. For 71420/71420 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5534 event pairs, 85 based on Foata normal form. 1/1084 useless extension candidates. Maximal degree in co-relation 7835. Up to 845 conditions per place. [2024-06-03 19:58:27,362 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 98 changer transitions 0/261 dead transitions. [2024-06-03 19:58:27,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 261 transitions, 4002 flow [2024-06-03 19:58:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:58:27,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:58:27,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-03 19:58:27,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-03 19:58:27,363 INFO L175 Difference]: Start difference. First operand has 263 places, 244 transitions, 3281 flow. Second operand 8 states and 103 transitions. [2024-06-03 19:58:27,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 261 transitions, 4002 flow [2024-06-03 19:58:27,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 261 transitions, 3828 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:27,575 INFO L231 Difference]: Finished difference. Result has 264 places, 246 transitions, 3339 flow [2024-06-03 19:58:27,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3339, PETRI_PLACES=264, PETRI_TRANSITIONS=246} [2024-06-03 19:58:27,575 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-03 19:58:27,575 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 246 transitions, 3339 flow [2024-06-03 19:58:27,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:27,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:27,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:27,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-03 19:58:27,576 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:27,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:27,576 INFO L85 PathProgramCache]: Analyzing trace with hash 2081211713, now seen corresponding path program 14 times [2024-06-03 19:58:27,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:27,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520969028] [2024-06-03 19:58:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:27,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:28,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:28,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520969028] [2024-06-03 19:58:28,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520969028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:28,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:28,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:58:28,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656331303] [2024-06-03 19:58:28,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:28,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:58:28,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:28,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:58:28,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:58:28,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:28,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 246 transitions, 3339 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:28,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:28,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:28,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:28,576 INFO L124 PetriNetUnfolderBase]: 599/1078 cut-off events. [2024-06-03 19:58:28,576 INFO L125 PetriNetUnfolderBase]: For 70668/70668 co-relation queries the response was YES. [2024-06-03 19:58:28,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7826 conditions, 1078 events. 599/1078 cut-off events. For 70668/70668 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5476 event pairs, 46 based on Foata normal form. 2/1080 useless extension candidates. Maximal degree in co-relation 7715. Up to 840 conditions per place. [2024-06-03 19:58:28,586 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 187 selfloop transitions, 72 changer transitions 0/261 dead transitions. [2024-06-03 19:58:28,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 261 transitions, 3905 flow [2024-06-03 19:58:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:58:28,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:58:28,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-03 19:58:28,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-03 19:58:28,587 INFO L175 Difference]: Start difference. First operand has 264 places, 246 transitions, 3339 flow. Second operand 8 states and 99 transitions. [2024-06-03 19:58:28,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 261 transitions, 3905 flow [2024-06-03 19:58:28,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 261 transitions, 3607 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-03 19:58:28,773 INFO L231 Difference]: Finished difference. Result has 263 places, 246 transitions, 3207 flow [2024-06-03 19:58:28,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3041, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3207, PETRI_PLACES=263, PETRI_TRANSITIONS=246} [2024-06-03 19:58:28,774 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-03 19:58:28,774 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 246 transitions, 3207 flow [2024-06-03 19:58:28,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:28,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:28,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:28,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-03 19:58:28,774 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:28,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1835959488, now seen corresponding path program 12 times [2024-06-03 19:58:28,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:28,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674761607] [2024-06-03 19:58:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:28,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:29,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:29,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674761607] [2024-06-03 19:58:29,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674761607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:29,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:29,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:29,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783464328] [2024-06-03 19:58:29,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:29,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:29,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:29,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:29,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:29,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:29,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 246 transitions, 3207 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:29,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:29,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:29,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:30,095 INFO L124 PetriNetUnfolderBase]: 602/1083 cut-off events. [2024-06-03 19:58:30,095 INFO L125 PetriNetUnfolderBase]: For 65952/65952 co-relation queries the response was YES. [2024-06-03 19:58:30,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7782 conditions, 1083 events. 602/1083 cut-off events. For 65952/65952 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5541 event pairs, 107 based on Foata normal form. 1/1084 useless extension candidates. Maximal degree in co-relation 7672. Up to 917 conditions per place. [2024-06-03 19:58:30,105 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 188 selfloop transitions, 71 changer transitions 0/261 dead transitions. [2024-06-03 19:58:30,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 261 transitions, 3786 flow [2024-06-03 19:58:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-03 19:58:30,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-03 19:58:30,105 INFO L175 Difference]: Start difference. First operand has 263 places, 246 transitions, 3207 flow. Second operand 9 states and 104 transitions. [2024-06-03 19:58:30,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 261 transitions, 3786 flow [2024-06-03 19:58:30,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 261 transitions, 3584 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 19:58:30,295 INFO L231 Difference]: Finished difference. Result has 262 places, 248 transitions, 3178 flow [2024-06-03 19:58:30,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3005, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3178, PETRI_PLACES=262, PETRI_TRANSITIONS=248} [2024-06-03 19:58:30,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-03 19:58:30,296 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 248 transitions, 3178 flow [2024-06-03 19:58:30,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:30,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:30,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:30,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-03 19:58:30,296 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:30,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1830597108, now seen corresponding path program 13 times [2024-06-03 19:58:30,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:30,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949411565] [2024-06-03 19:58:30,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:30,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:31,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:31,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949411565] [2024-06-03 19:58:31,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949411565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:31,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:31,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:31,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450571171] [2024-06-03 19:58:31,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:31,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:31,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:31,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:31,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 248 transitions, 3178 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:31,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:31,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:31,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:31,565 INFO L124 PetriNetUnfolderBase]: 605/1088 cut-off events. [2024-06-03 19:58:31,566 INFO L125 PetriNetUnfolderBase]: For 63719/63719 co-relation queries the response was YES. [2024-06-03 19:58:31,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7691 conditions, 1088 events. 605/1088 cut-off events. For 63719/63719 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5556 event pairs, 85 based on Foata normal form. 1/1089 useless extension candidates. Maximal degree in co-relation 7582. Up to 922 conditions per place. [2024-06-03 19:58:31,574 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 195 selfloop transitions, 63 changer transitions 0/260 dead transitions. [2024-06-03 19:58:31,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 260 transitions, 3741 flow [2024-06-03 19:58:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:31,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:31,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-03 19:58:31,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-03 19:58:31,575 INFO L175 Difference]: Start difference. First operand has 262 places, 248 transitions, 3178 flow. Second operand 9 states and 101 transitions. [2024-06-03 19:58:31,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 260 transitions, 3741 flow [2024-06-03 19:58:31,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 260 transitions, 3519 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 19:58:31,757 INFO L231 Difference]: Finished difference. Result has 262 places, 250 transitions, 3117 flow [2024-06-03 19:58:31,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3117, PETRI_PLACES=262, PETRI_TRANSITIONS=250} [2024-06-03 19:58:31,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-03 19:58:31,758 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 250 transitions, 3117 flow [2024-06-03 19:58:31,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:31,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:31,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:31,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-03 19:58:31,758 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:31,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:31,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1830596891, now seen corresponding path program 5 times [2024-06-03 19:58:31,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:31,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628318755] [2024-06-03 19:58:31,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:31,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:32,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:32,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628318755] [2024-06-03 19:58:32,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628318755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:32,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:32,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:32,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324786159] [2024-06-03 19:58:32,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:32,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:32,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:32,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:32,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:32,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:32,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 250 transitions, 3117 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:32,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:32,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:32,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:33,112 INFO L124 PetriNetUnfolderBase]: 631/1130 cut-off events. [2024-06-03 19:58:33,113 INFO L125 PetriNetUnfolderBase]: For 74685/74685 co-relation queries the response was YES. [2024-06-03 19:58:33,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8166 conditions, 1130 events. 631/1130 cut-off events. For 74685/74685 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5805 event pairs, 81 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 8057. Up to 828 conditions per place. [2024-06-03 19:58:33,122 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 199 selfloop transitions, 77 changer transitions 0/278 dead transitions. [2024-06-03 19:58:33,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 278 transitions, 4248 flow [2024-06-03 19:58:33,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 19:58:33,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-03 19:58:33,123 INFO L175 Difference]: Start difference. First operand has 262 places, 250 transitions, 3117 flow. Second operand 9 states and 113 transitions. [2024-06-03 19:58:33,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 278 transitions, 4248 flow [2024-06-03 19:58:33,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 278 transitions, 4107 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:33,333 INFO L231 Difference]: Finished difference. Result has 264 places, 261 transitions, 3328 flow [2024-06-03 19:58:33,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2982, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3328, PETRI_PLACES=264, PETRI_TRANSITIONS=261} [2024-06-03 19:58:33,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-03 19:58:33,334 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 261 transitions, 3328 flow [2024-06-03 19:58:33,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:33,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:33,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:33,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-03 19:58:33,334 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:33,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:33,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1830395298, now seen corresponding path program 14 times [2024-06-03 19:58:33,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:33,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072936770] [2024-06-03 19:58:33,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:33,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:34,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072936770] [2024-06-03 19:58:34,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072936770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:34,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:34,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:34,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59934208] [2024-06-03 19:58:34,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:34,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:34,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:34,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:34,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:34,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:34,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 261 transitions, 3328 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:34,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:34,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:34,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:34,667 INFO L124 PetriNetUnfolderBase]: 634/1135 cut-off events. [2024-06-03 19:58:34,667 INFO L125 PetriNetUnfolderBase]: For 72903/72903 co-relation queries the response was YES. [2024-06-03 19:58:34,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8350 conditions, 1135 events. 634/1135 cut-off events. For 72903/72903 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5829 event pairs, 87 based on Foata normal form. 1/1136 useless extension candidates. Maximal degree in co-relation 8240. Up to 969 conditions per place. [2024-06-03 19:58:34,677 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 206 selfloop transitions, 65 changer transitions 0/273 dead transitions. [2024-06-03 19:58:34,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 273 transitions, 3921 flow [2024-06-03 19:58:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-03 19:58:34,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-03 19:58:34,678 INFO L175 Difference]: Start difference. First operand has 264 places, 261 transitions, 3328 flow. Second operand 9 states and 100 transitions. [2024-06-03 19:58:34,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 273 transitions, 3921 flow [2024-06-03 19:58:34,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 273 transitions, 3874 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-03 19:58:34,883 INFO L231 Difference]: Finished difference. Result has 270 places, 263 transitions, 3450 flow [2024-06-03 19:58:34,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3281, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3450, PETRI_PLACES=270, PETRI_TRANSITIONS=263} [2024-06-03 19:58:34,884 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-03 19:58:34,884 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 263 transitions, 3450 flow [2024-06-03 19:58:34,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:34,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:34,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:34,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-03 19:58:34,884 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:34,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:34,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1835959271, now seen corresponding path program 6 times [2024-06-03 19:58:34,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:34,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120800065] [2024-06-03 19:58:34,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:34,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:35,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:35,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120800065] [2024-06-03 19:58:35,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120800065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:35,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:35,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:35,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891726019] [2024-06-03 19:58:35,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:35,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:35,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:35,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:35,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:35,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:35,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 263 transitions, 3450 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:35,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:35,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:35,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:36,272 INFO L124 PetriNetUnfolderBase]: 630/1129 cut-off events. [2024-06-03 19:58:36,272 INFO L125 PetriNetUnfolderBase]: For 72537/72537 co-relation queries the response was YES. [2024-06-03 19:58:36,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8306 conditions, 1129 events. 630/1129 cut-off events. For 72537/72537 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5823 event pairs, 103 based on Foata normal form. 2/1131 useless extension candidates. Maximal degree in co-relation 8194. Up to 830 conditions per place. [2024-06-03 19:58:36,282 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 89 changer transitions 0/280 dead transitions. [2024-06-03 19:58:36,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 280 transitions, 4193 flow [2024-06-03 19:58:36,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:36,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-03 19:58:36,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-03 19:58:36,283 INFO L175 Difference]: Start difference. First operand has 270 places, 263 transitions, 3450 flow. Second operand 9 states and 112 transitions. [2024-06-03 19:58:36,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 280 transitions, 4193 flow [2024-06-03 19:58:36,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 280 transitions, 4042 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:36,523 INFO L231 Difference]: Finished difference. Result has 271 places, 263 transitions, 3487 flow [2024-06-03 19:58:36,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3301, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3487, PETRI_PLACES=271, PETRI_TRANSITIONS=263} [2024-06-03 19:58:36,524 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-03 19:58:36,524 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 263 transitions, 3487 flow [2024-06-03 19:58:36,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:36,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:36,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:36,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-03 19:58:36,524 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:36,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:36,524 INFO L85 PathProgramCache]: Analyzing trace with hash -963508549, now seen corresponding path program 7 times [2024-06-03 19:58:36,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:36,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404290087] [2024-06-03 19:58:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:36,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:37,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:37,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404290087] [2024-06-03 19:58:37,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404290087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:37,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:37,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:37,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769401877] [2024-06-03 19:58:37,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:37,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:37,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:37,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:37,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:37,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:37,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 263 transitions, 3487 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:37,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:37,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:37,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:38,027 INFO L124 PetriNetUnfolderBase]: 646/1155 cut-off events. [2024-06-03 19:58:38,028 INFO L125 PetriNetUnfolderBase]: For 77565/77565 co-relation queries the response was YES. [2024-06-03 19:58:38,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8651 conditions, 1155 events. 646/1155 cut-off events. For 77565/77565 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5932 event pairs, 91 based on Foata normal form. 2/1157 useless extension candidates. Maximal degree in co-relation 8539. Up to 574 conditions per place. [2024-06-03 19:58:38,037 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 147 selfloop transitions, 135 changer transitions 0/284 dead transitions. [2024-06-03 19:58:38,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 284 transitions, 4550 flow [2024-06-03 19:58:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-03 19:58:38,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-03 19:58:38,038 INFO L175 Difference]: Start difference. First operand has 271 places, 263 transitions, 3487 flow. Second operand 9 states and 115 transitions. [2024-06-03 19:58:38,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 284 transitions, 4550 flow [2024-06-03 19:58:38,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 284 transitions, 4458 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-03 19:58:38,267 INFO L231 Difference]: Finished difference. Result has 275 places, 267 transitions, 3730 flow [2024-06-03 19:58:38,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3397, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3730, PETRI_PLACES=275, PETRI_TRANSITIONS=267} [2024-06-03 19:58:38,267 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-03 19:58:38,267 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 267 transitions, 3730 flow [2024-06-03 19:58:38,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:38,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:38,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:38,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-03 19:58:38,267 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:38,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:38,268 INFO L85 PathProgramCache]: Analyzing trace with hash -963501109, now seen corresponding path program 8 times [2024-06-03 19:58:38,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:38,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996484837] [2024-06-03 19:58:38,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:38,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:39,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:39,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996484837] [2024-06-03 19:58:39,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996484837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:39,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:39,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:39,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985262804] [2024-06-03 19:58:39,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:39,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:39,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:39,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:39,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:39,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:39,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 267 transitions, 3730 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:39,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:39,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:39,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:39,836 INFO L124 PetriNetUnfolderBase]: 642/1149 cut-off events. [2024-06-03 19:58:39,836 INFO L125 PetriNetUnfolderBase]: For 75981/75981 co-relation queries the response was YES. [2024-06-03 19:58:39,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8691 conditions, 1149 events. 642/1149 cut-off events. For 75981/75981 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5927 event pairs, 91 based on Foata normal form. 2/1151 useless extension candidates. Maximal degree in co-relation 8578. Up to 573 conditions per place. [2024-06-03 19:58:39,846 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 143 changer transitions 0/282 dead transitions. [2024-06-03 19:58:39,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 282 transitions, 4598 flow [2024-06-03 19:58:39,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:39,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 19:58:39,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-03 19:58:39,847 INFO L175 Difference]: Start difference. First operand has 275 places, 267 transitions, 3730 flow. Second operand 9 states and 113 transitions. [2024-06-03 19:58:39,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 282 transitions, 4598 flow [2024-06-03 19:58:40,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 282 transitions, 4412 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-03 19:58:40,145 INFO L231 Difference]: Finished difference. Result has 278 places, 267 transitions, 3843 flow [2024-06-03 19:58:40,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3548, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3843, PETRI_PLACES=278, PETRI_TRANSITIONS=267} [2024-06-03 19:58:40,145 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-03 19:58:40,146 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 267 transitions, 3843 flow [2024-06-03 19:58:40,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:40,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:40,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:40,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-03 19:58:40,146 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:40,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash 653175163, now seen corresponding path program 9 times [2024-06-03 19:58:40,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:40,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049867150] [2024-06-03 19:58:40,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:40,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:40,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:40,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049867150] [2024-06-03 19:58:40,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049867150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:40,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:40,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:40,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697221179] [2024-06-03 19:58:40,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:40,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:40,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:40,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:40,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:41,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:41,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 267 transitions, 3843 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:41,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:41,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:41,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:41,386 INFO L124 PetriNetUnfolderBase]: 668/1191 cut-off events. [2024-06-03 19:58:41,386 INFO L125 PetriNetUnfolderBase]: For 85678/85678 co-relation queries the response was YES. [2024-06-03 19:58:41,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9304 conditions, 1191 events. 668/1191 cut-off events. For 85678/85678 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6167 event pairs, 192 based on Foata normal form. 2/1193 useless extension candidates. Maximal degree in co-relation 9191. Up to 1115 conditions per place. [2024-06-03 19:58:41,397 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 257 selfloop transitions, 27 changer transitions 0/286 dead transitions. [2024-06-03 19:58:41,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 286 transitions, 4821 flow [2024-06-03 19:58:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:41,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-03 19:58:41,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-03 19:58:41,398 INFO L175 Difference]: Start difference. First operand has 278 places, 267 transitions, 3843 flow. Second operand 9 states and 101 transitions. [2024-06-03 19:58:41,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 286 transitions, 4821 flow [2024-06-03 19:58:41,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 286 transitions, 4550 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:41,660 INFO L231 Difference]: Finished difference. Result has 279 places, 273 transitions, 3747 flow [2024-06-03 19:58:41,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3582, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3747, PETRI_PLACES=279, PETRI_TRANSITIONS=273} [2024-06-03 19:58:41,660 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-03 19:58:41,660 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 273 transitions, 3747 flow [2024-06-03 19:58:41,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:41,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:41,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:41,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-03 19:58:41,661 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:41,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:41,661 INFO L85 PathProgramCache]: Analyzing trace with hash 250865652, now seen corresponding path program 15 times [2024-06-03 19:58:41,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:41,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342794942] [2024-06-03 19:58:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:41,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:42,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:42,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342794942] [2024-06-03 19:58:42,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342794942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:42,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:42,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:42,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518498373] [2024-06-03 19:58:42,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:42,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:42,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:42,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:42,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:42,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:42,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 273 transitions, 3747 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:42,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:42,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:42,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:43,003 INFO L124 PetriNetUnfolderBase]: 671/1196 cut-off events. [2024-06-03 19:58:43,003 INFO L125 PetriNetUnfolderBase]: For 83322/83322 co-relation queries the response was YES. [2024-06-03 19:58:43,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9050 conditions, 1196 events. 671/1196 cut-off events. For 83322/83322 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6201 event pairs, 191 based on Foata normal form. 1/1197 useless extension candidates. Maximal degree in co-relation 8937. Up to 1155 conditions per place. [2024-06-03 19:58:43,013 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 260 selfloop transitions, 21 changer transitions 0/283 dead transitions. [2024-06-03 19:58:43,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 283 transitions, 4359 flow [2024-06-03 19:58:43,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:43,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-03 19:58:43,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-03 19:58:43,014 INFO L175 Difference]: Start difference. First operand has 279 places, 273 transitions, 3747 flow. Second operand 9 states and 92 transitions. [2024-06-03 19:58:43,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 283 transitions, 4359 flow [2024-06-03 19:58:43,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 283 transitions, 4316 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-03 19:58:43,276 INFO L231 Difference]: Finished difference. Result has 284 places, 275 transitions, 3787 flow [2024-06-03 19:58:43,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3704, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3787, PETRI_PLACES=284, PETRI_TRANSITIONS=275} [2024-06-03 19:58:43,276 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-03 19:58:43,276 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 275 transitions, 3787 flow [2024-06-03 19:58:43,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:43,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:43,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:43,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-03 19:58:43,277 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:43,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:43,277 INFO L85 PathProgramCache]: Analyzing trace with hash 258023149, now seen corresponding path program 10 times [2024-06-03 19:58:43,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:43,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009214116] [2024-06-03 19:58:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:43,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:44,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:44,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009214116] [2024-06-03 19:58:44,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009214116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:44,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:44,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:44,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067000841] [2024-06-03 19:58:44,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:44,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:44,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:44,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:44,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:44,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:44,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 275 transitions, 3787 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:44,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:44,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:44,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:44,746 INFO L124 PetriNetUnfolderBase]: 687/1222 cut-off events. [2024-06-03 19:58:44,746 INFO L125 PetriNetUnfolderBase]: For 92812/92812 co-relation queries the response was YES. [2024-06-03 19:58:44,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9401 conditions, 1222 events. 687/1222 cut-off events. For 92812/92812 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6371 event pairs, 188 based on Foata normal form. 2/1224 useless extension candidates. Maximal degree in co-relation 9286. Up to 1142 conditions per place. [2024-06-03 19:58:44,756 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 265 selfloop transitions, 25 changer transitions 0/292 dead transitions. [2024-06-03 19:58:44,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 292 transitions, 4749 flow [2024-06-03 19:58:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 19:58:44,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:58:44,757 INFO L175 Difference]: Start difference. First operand has 284 places, 275 transitions, 3787 flow. Second operand 9 states and 99 transitions. [2024-06-03 19:58:44,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 292 transitions, 4749 flow [2024-06-03 19:58:45,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 292 transitions, 4692 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:45,040 INFO L231 Difference]: Finished difference. Result has 286 places, 279 transitions, 3861 flow [2024-06-03 19:58:45,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3730, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3861, PETRI_PLACES=286, PETRI_TRANSITIONS=279} [2024-06-03 19:58:45,040 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-03 19:58:45,040 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 279 transitions, 3861 flow [2024-06-03 19:58:45,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:45,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:45,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:45,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-03 19:58:45,040 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:45,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:45,041 INFO L85 PathProgramCache]: Analyzing trace with hash 652973136, now seen corresponding path program 16 times [2024-06-03 19:58:45,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:45,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796189335] [2024-06-03 19:58:45,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:45,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:46,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:46,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796189335] [2024-06-03 19:58:46,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796189335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:46,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:46,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:46,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911349112] [2024-06-03 19:58:46,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:46,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:46,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:46,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:46,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:46,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:46,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 279 transitions, 3861 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:46,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:46,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:46,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:46,476 INFO L124 PetriNetUnfolderBase]: 690/1227 cut-off events. [2024-06-03 19:58:46,477 INFO L125 PetriNetUnfolderBase]: For 93231/93231 co-relation queries the response was YES. [2024-06-03 19:58:46,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9487 conditions, 1227 events. 690/1227 cut-off events. For 93231/93231 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6410 event pairs, 190 based on Foata normal form. 1/1228 useless extension candidates. Maximal degree in co-relation 9371. Up to 1180 conditions per place. [2024-06-03 19:58:46,489 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 263 selfloop transitions, 24 changer transitions 0/289 dead transitions. [2024-06-03 19:58:46,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 289 transitions, 4489 flow [2024-06-03 19:58:46,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:46,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:46,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-03 19:58:46,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-03 19:58:46,490 INFO L175 Difference]: Start difference. First operand has 286 places, 279 transitions, 3861 flow. Second operand 9 states and 92 transitions. [2024-06-03 19:58:46,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 289 transitions, 4489 flow [2024-06-03 19:58:46,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 289 transitions, 4364 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:46,764 INFO L231 Difference]: Finished difference. Result has 288 places, 281 transitions, 3829 flow [2024-06-03 19:58:46,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3736, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3829, PETRI_PLACES=288, PETRI_TRANSITIONS=281} [2024-06-03 19:58:46,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-03 19:58:46,765 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 281 transitions, 3829 flow [2024-06-03 19:58:46,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:46,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:46,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:46,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-03 19:58:46,765 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:46,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:46,766 INFO L85 PathProgramCache]: Analyzing trace with hash 653182603, now seen corresponding path program 11 times [2024-06-03 19:58:46,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:46,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598863451] [2024-06-03 19:58:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:46,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:47,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:47,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598863451] [2024-06-03 19:58:47,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598863451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:47,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:47,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:47,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410241423] [2024-06-03 19:58:47,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:47,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:47,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:47,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:47,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:47,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:47,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 281 transitions, 3829 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:47,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:47,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:47,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:48,112 INFO L124 PetriNetUnfolderBase]: 686/1221 cut-off events. [2024-06-03 19:58:48,112 INFO L125 PetriNetUnfolderBase]: For 92567/92567 co-relation queries the response was YES. [2024-06-03 19:58:48,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9214 conditions, 1221 events. 686/1221 cut-off events. For 92567/92567 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6322 event pairs, 188 based on Foata normal form. 2/1223 useless extension candidates. Maximal degree in co-relation 9098. Up to 1148 conditions per place. [2024-06-03 19:58:48,123 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 262 selfloop transitions, 28 changer transitions 0/292 dead transitions. [2024-06-03 19:58:48,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 292 transitions, 4577 flow [2024-06-03 19:58:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 19:58:48,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-03 19:58:48,124 INFO L175 Difference]: Start difference. First operand has 288 places, 281 transitions, 3829 flow. Second operand 9 states and 98 transitions. [2024-06-03 19:58:48,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 292 transitions, 4577 flow [2024-06-03 19:58:48,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 292 transitions, 4494 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:48,448 INFO L231 Difference]: Finished difference. Result has 290 places, 281 transitions, 3807 flow [2024-06-03 19:58:48,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3746, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3807, PETRI_PLACES=290, PETRI_TRANSITIONS=281} [2024-06-03 19:58:48,449 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-03 19:58:48,449 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 281 transitions, 3807 flow [2024-06-03 19:58:48,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:48,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:48,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:48,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-03 19:58:48,450 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:48,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash 652973353, now seen corresponding path program 12 times [2024-06-03 19:58:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:48,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508683260] [2024-06-03 19:58:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:48,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:49,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:49,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508683260] [2024-06-03 19:58:49,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508683260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:49,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:49,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:49,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892579276] [2024-06-03 19:58:49,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:49,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:49,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:49,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:49,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:49,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:49,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 281 transitions, 3807 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:49,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:49,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:49,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:49,978 INFO L124 PetriNetUnfolderBase]: 682/1215 cut-off events. [2024-06-03 19:58:49,979 INFO L125 PetriNetUnfolderBase]: For 89901/89901 co-relation queries the response was YES. [2024-06-03 19:58:49,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9044 conditions, 1215 events. 682/1215 cut-off events. For 89901/89901 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6317 event pairs, 187 based on Foata normal form. 2/1217 useless extension candidates. Maximal degree in co-relation 8927. Up to 1145 conditions per place. [2024-06-03 19:58:49,990 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 263 selfloop transitions, 27 changer transitions 0/292 dead transitions. [2024-06-03 19:58:49,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 292 transitions, 4417 flow [2024-06-03 19:58:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 19:58:49,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:58:49,990 INFO L175 Difference]: Start difference. First operand has 290 places, 281 transitions, 3807 flow. Second operand 9 states and 99 transitions. [2024-06-03 19:58:49,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 292 transitions, 4417 flow [2024-06-03 19:58:50,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 292 transitions, 4347 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:50,299 INFO L231 Difference]: Finished difference. Result has 292 places, 281 transitions, 3796 flow [2024-06-03 19:58:50,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3737, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3796, PETRI_PLACES=292, PETRI_TRANSITIONS=281} [2024-06-03 19:58:50,299 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-03 19:58:50,299 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 281 transitions, 3796 flow [2024-06-03 19:58:50,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:50,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:50,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:50,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-03 19:58:50,300 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:50,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:50,300 INFO L85 PathProgramCache]: Analyzing trace with hash 909675673, now seen corresponding path program 13 times [2024-06-03 19:58:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:50,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485838367] [2024-06-03 19:58:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:51,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:51,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:51,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485838367] [2024-06-03 19:58:51,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485838367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:51,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:51,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:51,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70079064] [2024-06-03 19:58:51,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:51,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:51,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:51,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:51,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:51,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:51,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 281 transitions, 3796 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:51,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:51,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:51,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:51,620 INFO L124 PetriNetUnfolderBase]: 678/1209 cut-off events. [2024-06-03 19:58:51,620 INFO L125 PetriNetUnfolderBase]: For 86894/86894 co-relation queries the response was YES. [2024-06-03 19:58:51,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8870 conditions, 1209 events. 678/1209 cut-off events. For 86894/86894 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6298 event pairs, 183 based on Foata normal form. 2/1211 useless extension candidates. Maximal degree in co-relation 8752. Up to 1132 conditions per place. [2024-06-03 19:58:51,632 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 264 selfloop transitions, 27 changer transitions 0/293 dead transitions. [2024-06-03 19:58:51,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 293 transitions, 4554 flow [2024-06-03 19:58:51,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:51,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:58:51,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-03 19:58:51,633 INFO L175 Difference]: Start difference. First operand has 292 places, 281 transitions, 3796 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:58:51,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 293 transitions, 4554 flow [2024-06-03 19:58:51,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 293 transitions, 4470 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 19:58:51,956 INFO L231 Difference]: Finished difference. Result has 292 places, 281 transitions, 3771 flow [2024-06-03 19:58:51,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3712, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3771, PETRI_PLACES=292, PETRI_TRANSITIONS=281} [2024-06-03 19:58:51,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-03 19:58:51,957 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 281 transitions, 3771 flow [2024-06-03 19:58:51,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:51,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:51,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:51,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-03 19:58:51,957 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:51,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:51,958 INFO L85 PathProgramCache]: Analyzing trace with hash 660324786, now seen corresponding path program 17 times [2024-06-03 19:58:51,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:51,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976668218] [2024-06-03 19:58:51,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:51,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:52,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:52,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976668218] [2024-06-03 19:58:52,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976668218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:52,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:52,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:52,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782813999] [2024-06-03 19:58:52,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:52,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:52,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:52,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:52,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:52,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:52,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 281 transitions, 3771 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:52,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:52,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:52,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:53,237 INFO L124 PetriNetUnfolderBase]: 676/1206 cut-off events. [2024-06-03 19:58:53,237 INFO L125 PetriNetUnfolderBase]: For 83548/83548 co-relation queries the response was YES. [2024-06-03 19:58:53,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8778 conditions, 1206 events. 676/1206 cut-off events. For 83548/83548 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6281 event pairs, 185 based on Foata normal form. 1/1207 useless extension candidates. Maximal degree in co-relation 8659. Up to 1174 conditions per place. [2024-06-03 19:58:53,248 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 271 selfloop transitions, 16 changer transitions 0/289 dead transitions. [2024-06-03 19:58:53,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 289 transitions, 4363 flow [2024-06-03 19:58:53,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:53,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-03 19:58:53,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090277777777778 [2024-06-03 19:58:53,251 INFO L175 Difference]: Start difference. First operand has 292 places, 281 transitions, 3771 flow. Second operand 9 states and 89 transitions. [2024-06-03 19:58:53,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 289 transitions, 4363 flow [2024-06-03 19:58:53,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 289 transitions, 4250 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:53,585 INFO L231 Difference]: Finished difference. Result has 293 places, 281 transitions, 3695 flow [2024-06-03 19:58:53,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3658, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3695, PETRI_PLACES=293, PETRI_TRANSITIONS=281} [2024-06-03 19:58:53,585 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-03 19:58:53,585 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 281 transitions, 3695 flow [2024-06-03 19:58:53,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:53,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:53,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:53,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-03 19:58:53,586 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:53,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:53,586 INFO L85 PathProgramCache]: Analyzing trace with hash 909942583, now seen corresponding path program 14 times [2024-06-03 19:58:53,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:53,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942338079] [2024-06-03 19:58:53,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:53,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:54,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:54,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942338079] [2024-06-03 19:58:54,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942338079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:54,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:54,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:54,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361087465] [2024-06-03 19:58:54,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:54,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:54,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:54,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 281 transitions, 3695 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:54,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:54,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:54,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:54,814 INFO L124 PetriNetUnfolderBase]: 672/1200 cut-off events. [2024-06-03 19:58:54,814 INFO L125 PetriNetUnfolderBase]: For 82598/82598 co-relation queries the response was YES. [2024-06-03 19:58:54,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8544 conditions, 1200 events. 672/1200 cut-off events. For 82598/82598 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6237 event pairs, 185 based on Foata normal form. 2/1202 useless extension candidates. Maximal degree in co-relation 8424. Up to 1152 conditions per place. [2024-06-03 19:58:54,825 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 270 selfloop transitions, 19 changer transitions 0/291 dead transitions. [2024-06-03 19:58:54,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 291 transitions, 4299 flow [2024-06-03 19:58:54,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-03 19:58:54,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-03 19:58:54,826 INFO L175 Difference]: Start difference. First operand has 293 places, 281 transitions, 3695 flow. Second operand 9 states and 92 transitions. [2024-06-03 19:58:54,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 291 transitions, 4299 flow [2024-06-03 19:58:55,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 291 transitions, 4131 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-03 19:58:55,117 INFO L231 Difference]: Finished difference. Result has 293 places, 281 transitions, 3571 flow [2024-06-03 19:58:55,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3527, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3571, PETRI_PLACES=293, PETRI_TRANSITIONS=281} [2024-06-03 19:58:55,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-03 19:58:55,118 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 281 transitions, 3571 flow [2024-06-03 19:58:55,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:55,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:55,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:55,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-03 19:58:55,118 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:55,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:55,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1714897772, now seen corresponding path program 1 times [2024-06-03 19:58:55,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:55,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122856374] [2024-06-03 19:58:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:55,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:55,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:55,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122856374] [2024-06-03 19:58:55,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122856374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:55,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:55,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:55,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423383194] [2024-06-03 19:58:55,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:55,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:55,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:55,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:55,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:56,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:56,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 281 transitions, 3571 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:56,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:56,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:56,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:56,473 INFO L124 PetriNetUnfolderBase]: 701/1255 cut-off events. [2024-06-03 19:58:56,473 INFO L125 PetriNetUnfolderBase]: For 90097/90097 co-relation queries the response was YES. [2024-06-03 19:58:56,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8747 conditions, 1255 events. 701/1255 cut-off events. For 90097/90097 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6654 event pairs, 107 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 8627. Up to 861 conditions per place. [2024-06-03 19:58:56,484 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 80 changer transitions 0/310 dead transitions. [2024-06-03 19:58:56,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 310 transitions, 4465 flow [2024-06-03 19:58:56,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:58:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:58:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 19:58:56,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 19:58:56,485 INFO L175 Difference]: Start difference. First operand has 293 places, 281 transitions, 3571 flow. Second operand 11 states and 128 transitions. [2024-06-03 19:58:56,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 310 transitions, 4465 flow [2024-06-03 19:58:56,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 310 transitions, 4409 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 19:58:56,824 INFO L231 Difference]: Finished difference. Result has 297 places, 287 transitions, 3779 flow [2024-06-03 19:58:56,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3779, PETRI_PLACES=297, PETRI_TRANSITIONS=287} [2024-06-03 19:58:56,826 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-03 19:58:56,827 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 287 transitions, 3779 flow [2024-06-03 19:58:56,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:56,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:56,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:56,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-03 19:58:56,827 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:56,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:56,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1619817300, now seen corresponding path program 2 times [2024-06-03 19:58:56,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:56,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794475999] [2024-06-03 19:58:56,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:56,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:57,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:57,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794475999] [2024-06-03 19:58:57,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794475999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:57,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:57,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:57,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022095243] [2024-06-03 19:58:57,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:57,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:57,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:57,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:57,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:57,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 287 transitions, 3779 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:57,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:57,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:57,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:58,181 INFO L124 PetriNetUnfolderBase]: 711/1273 cut-off events. [2024-06-03 19:58:58,181 INFO L125 PetriNetUnfolderBase]: For 92686/92686 co-relation queries the response was YES. [2024-06-03 19:58:58,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9099 conditions, 1273 events. 711/1273 cut-off events. For 92686/92686 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6787 event pairs, 115 based on Foata normal form. 2/1275 useless extension candidates. Maximal degree in co-relation 8976. Up to 1038 conditions per place. [2024-06-03 19:58:58,192 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 82 changer transitions 0/308 dead transitions. [2024-06-03 19:58:58,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 308 transitions, 4504 flow [2024-06-03 19:58:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:58:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:58:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 19:58:58,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-03 19:58:58,193 INFO L175 Difference]: Start difference. First operand has 297 places, 287 transitions, 3779 flow. Second operand 11 states and 123 transitions. [2024-06-03 19:58:58,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 308 transitions, 4504 flow [2024-06-03 19:58:58,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 308 transitions, 4387 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-03 19:58:58,537 INFO L231 Difference]: Finished difference. Result has 303 places, 292 transitions, 3899 flow [2024-06-03 19:58:58,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3666, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3899, PETRI_PLACES=303, PETRI_TRANSITIONS=292} [2024-06-03 19:58:58,537 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-03 19:58:58,538 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 292 transitions, 3899 flow [2024-06-03 19:58:58,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:58,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:58,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:58,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-03 19:58:58,538 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:58,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:58,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1619937270, now seen corresponding path program 3 times [2024-06-03 19:58:58,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:58,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579503959] [2024-06-03 19:58:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:58,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:59,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:59,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579503959] [2024-06-03 19:58:59,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579503959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:59,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:59,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:59,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182410676] [2024-06-03 19:58:59,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:59,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:59,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:59,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:59,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:59,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:59,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 292 transitions, 3899 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:59,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:59,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:59,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:59,705 INFO L124 PetriNetUnfolderBase]: 733/1315 cut-off events. [2024-06-03 19:58:59,705 INFO L125 PetriNetUnfolderBase]: For 112393/112393 co-relation queries the response was YES. [2024-06-03 19:58:59,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9655 conditions, 1315 events. 733/1315 cut-off events. For 112393/112393 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7083 event pairs, 106 based on Foata normal form. 4/1319 useless extension candidates. Maximal degree in co-relation 9530. Up to 886 conditions per place. [2024-06-03 19:58:59,717 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 108 changer transitions 0/312 dead transitions. [2024-06-03 19:58:59,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 312 transitions, 4743 flow [2024-06-03 19:58:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:59,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:58:59,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:58:59,718 INFO L175 Difference]: Start difference. First operand has 303 places, 292 transitions, 3899 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:58:59,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 312 transitions, 4743 flow [2024-06-03 19:59:00,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 312 transitions, 4581 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 19:59:00,166 INFO L231 Difference]: Finished difference. Result has 306 places, 296 transitions, 3994 flow [2024-06-03 19:59:00,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3737, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3994, PETRI_PLACES=306, PETRI_TRANSITIONS=296} [2024-06-03 19:59:00,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-03 19:59:00,166 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 296 transitions, 3994 flow [2024-06-03 19:59:00,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:00,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:00,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:00,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-03 19:59:00,166 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:00,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:00,167 INFO L85 PathProgramCache]: Analyzing trace with hash 918744296, now seen corresponding path program 4 times [2024-06-03 19:59:00,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:00,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362428086] [2024-06-03 19:59:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:00,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:00,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:00,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362428086] [2024-06-03 19:59:00,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362428086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:00,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:00,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:59:00,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166284784] [2024-06-03 19:59:00,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:00,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:59:00,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:00,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:59:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:59:00,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:00,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 296 transitions, 3994 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:00,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:00,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:00,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:01,393 INFO L124 PetriNetUnfolderBase]: 748/1344 cut-off events. [2024-06-03 19:59:01,393 INFO L125 PetriNetUnfolderBase]: For 121761/121761 co-relation queries the response was YES. [2024-06-03 19:59:01,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10052 conditions, 1344 events. 748/1344 cut-off events. For 121761/121761 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7308 event pairs, 113 based on Foata normal form. 4/1348 useless extension candidates. Maximal degree in co-relation 9926. Up to 975 conditions per place. [2024-06-03 19:59:01,405 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 201 selfloop transitions, 111 changer transitions 0/314 dead transitions. [2024-06-03 19:59:01,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 314 transitions, 4840 flow [2024-06-03 19:59:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-03 19:59:01,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-03 19:59:01,406 INFO L175 Difference]: Start difference. First operand has 306 places, 296 transitions, 3994 flow. Second operand 10 states and 122 transitions. [2024-06-03 19:59:01,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 314 transitions, 4840 flow [2024-06-03 19:59:01,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 314 transitions, 4708 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 19:59:01,883 INFO L231 Difference]: Finished difference. Result has 310 places, 299 transitions, 4121 flow [2024-06-03 19:59:01,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3864, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4121, PETRI_PLACES=310, PETRI_TRANSITIONS=299} [2024-06-03 19:59:01,884 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-03 19:59:01,884 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 299 transitions, 4121 flow [2024-06-03 19:59:01,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:01,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:01,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:01,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-03 19:59:01,884 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:01,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:01,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2064384784, now seen corresponding path program 1 times [2024-06-03 19:59:01,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:01,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771302827] [2024-06-03 19:59:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:01,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:03,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:03,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771302827] [2024-06-03 19:59:03,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771302827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:03,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:03,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:03,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242241662] [2024-06-03 19:59:03,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:03,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:03,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:03,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:03,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:03,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:03,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 299 transitions, 4121 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:03,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:03,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:03,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:03,957 INFO L124 PetriNetUnfolderBase]: 754/1354 cut-off events. [2024-06-03 19:59:03,957 INFO L125 PetriNetUnfolderBase]: For 118568/118568 co-relation queries the response was YES. [2024-06-03 19:59:03,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10324 conditions, 1354 events. 754/1354 cut-off events. For 118568/118568 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7367 event pairs, 120 based on Foata normal form. 2/1356 useless extension candidates. Maximal degree in co-relation 10196. Up to 1029 conditions per place. [2024-06-03 19:59:03,970 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 220 selfloop transitions, 103 changer transitions 0/325 dead transitions. [2024-06-03 19:59:03,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 325 transitions, 4866 flow [2024-06-03 19:59:03,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:59:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:59:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-03 19:59:03,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37259615384615385 [2024-06-03 19:59:03,971 INFO L175 Difference]: Start difference. First operand has 310 places, 299 transitions, 4121 flow. Second operand 13 states and 155 transitions. [2024-06-03 19:59:03,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 325 transitions, 4866 flow [2024-06-03 19:59:04,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 325 transitions, 4730 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 19:59:04,455 INFO L231 Difference]: Finished difference. Result has 317 places, 302 transitions, 4233 flow [2024-06-03 19:59:04,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3987, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4233, PETRI_PLACES=317, PETRI_TRANSITIONS=302} [2024-06-03 19:59:04,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 286 predicate places. [2024-06-03 19:59:04,455 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 302 transitions, 4233 flow [2024-06-03 19:59:04,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:04,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:04,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:04,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-03 19:59:04,455 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:04,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1062205402, now seen corresponding path program 5 times [2024-06-03 19:59:04,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:04,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842713339] [2024-06-03 19:59:04,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:04,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:05,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:05,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842713339] [2024-06-03 19:59:05,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842713339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:05,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:05,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:05,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031049073] [2024-06-03 19:59:05,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:05,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:05,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:05,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:05,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:05,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:05,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 302 transitions, 4233 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:05,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:05,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:05,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:05,830 INFO L124 PetriNetUnfolderBase]: 758/1362 cut-off events. [2024-06-03 19:59:05,830 INFO L125 PetriNetUnfolderBase]: For 121723/121723 co-relation queries the response was YES. [2024-06-03 19:59:05,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10617 conditions, 1362 events. 758/1362 cut-off events. For 121723/121723 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7425 event pairs, 89 based on Foata normal form. 2/1364 useless extension candidates. Maximal degree in co-relation 10487. Up to 585 conditions per place. [2024-06-03 19:59:05,844 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 128 changer transitions 0/324 dead transitions. [2024-06-03 19:59:05,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 324 transitions, 5097 flow [2024-06-03 19:59:05,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:05,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 19:59:05,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:59:05,845 INFO L175 Difference]: Start difference. First operand has 317 places, 302 transitions, 4233 flow. Second operand 11 states and 121 transitions. [2024-06-03 19:59:05,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 324 transitions, 5097 flow [2024-06-03 19:59:06,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 324 transitions, 4903 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-03 19:59:06,344 INFO L231 Difference]: Finished difference. Result has 318 places, 303 transitions, 4309 flow [2024-06-03 19:59:06,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4039, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4309, PETRI_PLACES=318, PETRI_TRANSITIONS=303} [2024-06-03 19:59:06,345 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-03 19:59:06,345 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 303 transitions, 4309 flow [2024-06-03 19:59:06,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:06,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:06,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:06,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-03 19:59:06,345 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:06,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1825131852, now seen corresponding path program 6 times [2024-06-03 19:59:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:06,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423325109] [2024-06-03 19:59:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:06,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:07,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:07,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423325109] [2024-06-03 19:59:07,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423325109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:07,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:07,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:07,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437466058] [2024-06-03 19:59:07,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:07,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:07,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:07,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:07,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:07,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:07,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 303 transitions, 4309 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:07,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:07,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:07,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:07,715 INFO L124 PetriNetUnfolderBase]: 762/1370 cut-off events. [2024-06-03 19:59:07,716 INFO L125 PetriNetUnfolderBase]: For 124552/124552 co-relation queries the response was YES. [2024-06-03 19:59:07,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10715 conditions, 1370 events. 762/1370 cut-off events. For 124552/124552 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7449 event pairs, 120 based on Foata normal form. 2/1372 useless extension candidates. Maximal degree in co-relation 10586. Up to 976 conditions per place. [2024-06-03 19:59:07,727 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 206 selfloop transitions, 120 changer transitions 0/328 dead transitions. [2024-06-03 19:59:07,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 328 transitions, 5221 flow [2024-06-03 19:59:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:07,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:07,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:59:07,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 19:59:07,727 INFO L175 Difference]: Start difference. First operand has 318 places, 303 transitions, 4309 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:59:07,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 328 transitions, 5221 flow [2024-06-03 19:59:08,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 328 transitions, 5072 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:08,241 INFO L231 Difference]: Finished difference. Result has 321 places, 304 transitions, 4419 flow [2024-06-03 19:59:08,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4164, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4419, PETRI_PLACES=321, PETRI_TRANSITIONS=304} [2024-06-03 19:59:08,241 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-03 19:59:08,241 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 304 transitions, 4419 flow [2024-06-03 19:59:08,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:08,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:08,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:08,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-03 19:59:08,242 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:08,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash 551690094, now seen corresponding path program 7 times [2024-06-03 19:59:08,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:08,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232009655] [2024-06-03 19:59:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:08,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:08,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:08,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232009655] [2024-06-03 19:59:08,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232009655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:08,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:08,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:59:08,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430043777] [2024-06-03 19:59:08,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:08,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:59:08,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:08,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:59:08,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:59:09,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:09,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 304 transitions, 4419 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:09,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:09,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:09,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:09,517 INFO L124 PetriNetUnfolderBase]: 756/1360 cut-off events. [2024-06-03 19:59:09,517 INFO L125 PetriNetUnfolderBase]: For 121195/121195 co-relation queries the response was YES. [2024-06-03 19:59:09,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10432 conditions, 1360 events. 756/1360 cut-off events. For 121195/121195 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7424 event pairs, 119 based on Foata normal form. 4/1364 useless extension candidates. Maximal degree in co-relation 10303. Up to 1027 conditions per place. [2024-06-03 19:59:09,530 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 112 changer transitions 0/317 dead transitions. [2024-06-03 19:59:09,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 317 transitions, 5081 flow [2024-06-03 19:59:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:09,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:59:09,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-03 19:59:09,531 INFO L175 Difference]: Start difference. First operand has 321 places, 304 transitions, 4419 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:59:09,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 317 transitions, 5081 flow [2024-06-03 19:59:10,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 317 transitions, 4741 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-03 19:59:10,009 INFO L231 Difference]: Finished difference. Result has 321 places, 304 transitions, 4311 flow [2024-06-03 19:59:10,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4079, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4311, PETRI_PLACES=321, PETRI_TRANSITIONS=304} [2024-06-03 19:59:10,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-03 19:59:10,009 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 304 transitions, 4311 flow [2024-06-03 19:59:10,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:10,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:10,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:10,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-03 19:59:10,010 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:10,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:10,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1072270626, now seen corresponding path program 2 times [2024-06-03 19:59:10,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:10,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532285009] [2024-06-03 19:59:10,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:10,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:11,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:11,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532285009] [2024-06-03 19:59:11,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532285009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:11,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:11,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:11,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748190205] [2024-06-03 19:59:11,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:11,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:11,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:11,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:11,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:11,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:11,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 304 transitions, 4311 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:11,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:11,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:11,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:11,733 INFO L124 PetriNetUnfolderBase]: 762/1370 cut-off events. [2024-06-03 19:59:11,733 INFO L125 PetriNetUnfolderBase]: For 117091/117091 co-relation queries the response was YES. [2024-06-03 19:59:11,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10288 conditions, 1370 events. 762/1370 cut-off events. For 117091/117091 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7512 event pairs, 144 based on Foata normal form. 2/1372 useless extension candidates. Maximal degree in co-relation 10161. Up to 1036 conditions per place. [2024-06-03 19:59:11,748 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 234 selfloop transitions, 88 changer transitions 0/324 dead transitions. [2024-06-03 19:59:11,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 324 transitions, 5031 flow [2024-06-03 19:59:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 19:59:11,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 19:59:11,749 INFO L175 Difference]: Start difference. First operand has 321 places, 304 transitions, 4311 flow. Second operand 11 states and 133 transitions. [2024-06-03 19:59:11,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 324 transitions, 5031 flow [2024-06-03 19:59:12,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 324 transitions, 4803 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-03 19:59:12,219 INFO L231 Difference]: Finished difference. Result has 323 places, 306 transitions, 4292 flow [2024-06-03 19:59:12,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4083, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4292, PETRI_PLACES=323, PETRI_TRANSITIONS=306} [2024-06-03 19:59:12,219 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-03 19:59:12,219 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 306 transitions, 4292 flow [2024-06-03 19:59:12,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:12,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:12,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:12,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-03 19:59:12,220 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:12,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:12,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2064378088, now seen corresponding path program 8 times [2024-06-03 19:59:12,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:12,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503925776] [2024-06-03 19:59:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:12,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:13,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:13,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:13,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503925776] [2024-06-03 19:59:13,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503925776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:13,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:13,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:13,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403551798] [2024-06-03 19:59:13,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:13,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:13,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:13,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:13,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:13,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:13,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 306 transitions, 4292 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:13,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:13,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:13,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:13,748 INFO L124 PetriNetUnfolderBase]: 766/1378 cut-off events. [2024-06-03 19:59:13,748 INFO L125 PetriNetUnfolderBase]: For 119923/119923 co-relation queries the response was YES. [2024-06-03 19:59:13,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10344 conditions, 1378 events. 766/1378 cut-off events. For 119923/119923 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7566 event pairs, 121 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 10216. Up to 1039 conditions per place. [2024-06-03 19:59:13,759 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 113 changer transitions 0/321 dead transitions. [2024-06-03 19:59:13,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 321 transitions, 4977 flow [2024-06-03 19:59:13,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:13,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:59:13,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 19:59:13,760 INFO L175 Difference]: Start difference. First operand has 323 places, 306 transitions, 4292 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:59:13,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 321 transitions, 4977 flow [2024-06-03 19:59:14,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 321 transitions, 4794 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-03 19:59:14,279 INFO L231 Difference]: Finished difference. Result has 325 places, 307 transitions, 4360 flow [2024-06-03 19:59:14,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4109, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4360, PETRI_PLACES=325, PETRI_TRANSITIONS=307} [2024-06-03 19:59:14,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-03 19:59:14,280 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 307 transitions, 4360 flow [2024-06-03 19:59:14,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:14,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:14,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:14,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-03 19:59:14,280 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:14,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:14,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1072092810, now seen corresponding path program 9 times [2024-06-03 19:59:14,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:14,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44712411] [2024-06-03 19:59:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:14,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:15,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:15,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44712411] [2024-06-03 19:59:15,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44712411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:15,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:15,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:59:15,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997207790] [2024-06-03 19:59:15,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:15,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:59:15,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:15,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:59:15,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:59:15,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:15,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 307 transitions, 4360 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:15,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:15,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:15,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:15,655 INFO L124 PetriNetUnfolderBase]: 770/1386 cut-off events. [2024-06-03 19:59:15,655 INFO L125 PetriNetUnfolderBase]: For 122378/122378 co-relation queries the response was YES. [2024-06-03 19:59:15,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10447 conditions, 1386 events. 770/1386 cut-off events. For 122378/122378 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7638 event pairs, 146 based on Foata normal form. 2/1388 useless extension candidates. Maximal degree in co-relation 10318. Up to 1179 conditions per place. [2024-06-03 19:59:15,669 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 66 changer transitions 0/323 dead transitions. [2024-06-03 19:59:15,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 323 transitions, 5223 flow [2024-06-03 19:59:15,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 19:59:15,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-03 19:59:15,670 INFO L175 Difference]: Start difference. First operand has 325 places, 307 transitions, 4360 flow. Second operand 10 states and 119 transitions. [2024-06-03 19:59:15,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 323 transitions, 5223 flow [2024-06-03 19:59:16,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 323 transitions, 4993 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 19:59:16,178 INFO L231 Difference]: Finished difference. Result has 325 places, 308 transitions, 4283 flow [2024-06-03 19:59:16,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4132, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4283, PETRI_PLACES=325, PETRI_TRANSITIONS=308} [2024-06-03 19:59:16,178 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-03 19:59:16,178 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 308 transitions, 4283 flow [2024-06-03 19:59:16,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:16,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:16,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:16,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-03 19:59:16,179 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:16,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:16,179 INFO L85 PathProgramCache]: Analyzing trace with hash -693817926, now seen corresponding path program 10 times [2024-06-03 19:59:16,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:16,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430544243] [2024-06-03 19:59:16,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:16,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:16,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:16,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430544243] [2024-06-03 19:59:16,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430544243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:16,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:16,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:59:16,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105182573] [2024-06-03 19:59:16,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:16,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:59:16,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:16,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:59:16,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:59:17,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:17,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 308 transitions, 4283 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:17,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:17,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:17,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:17,500 INFO L124 PetriNetUnfolderBase]: 767/1381 cut-off events. [2024-06-03 19:59:17,500 INFO L125 PetriNetUnfolderBase]: For 115233/115233 co-relation queries the response was YES. [2024-06-03 19:59:17,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10151 conditions, 1381 events. 767/1381 cut-off events. For 115233/115233 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7612 event pairs, 143 based on Foata normal form. 2/1383 useless extension candidates. Maximal degree in co-relation 10022. Up to 1203 conditions per place. [2024-06-03 19:59:17,513 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 256 selfloop transitions, 63 changer transitions 0/321 dead transitions. [2024-06-03 19:59:17,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 321 transitions, 4953 flow [2024-06-03 19:59:17,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:17,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 19:59:17,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-03 19:59:17,514 INFO L175 Difference]: Start difference. First operand has 325 places, 308 transitions, 4283 flow. Second operand 10 states and 116 transitions. [2024-06-03 19:59:17,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 321 transitions, 4953 flow [2024-06-03 19:59:17,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 321 transitions, 4709 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-03 19:59:17,967 INFO L231 Difference]: Finished difference. Result has 326 places, 308 transitions, 4169 flow [2024-06-03 19:59:17,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4039, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4169, PETRI_PLACES=326, PETRI_TRANSITIONS=308} [2024-06-03 19:59:17,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-03 19:59:17,967 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 308 transitions, 4169 flow [2024-06-03 19:59:17,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:17,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:17,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:17,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-03 19:59:17,968 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:17,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:17,968 INFO L85 PathProgramCache]: Analyzing trace with hash -693817740, now seen corresponding path program 3 times [2024-06-03 19:59:17,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:17,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523646489] [2024-06-03 19:59:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:17,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:18,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:18,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523646489] [2024-06-03 19:59:18,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523646489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:18,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:18,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:59:18,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529834034] [2024-06-03 19:59:18,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:18,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:59:18,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:18,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:59:18,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:59:18,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:18,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 308 transitions, 4169 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:18,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:18,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:18,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:19,433 INFO L124 PetriNetUnfolderBase]: 763/1375 cut-off events. [2024-06-03 19:59:19,433 INFO L125 PetriNetUnfolderBase]: For 110111/110111 co-relation queries the response was YES. [2024-06-03 19:59:19,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9738 conditions, 1375 events. 763/1375 cut-off events. For 110111/110111 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7591 event pairs, 145 based on Foata normal form. 2/1377 useless extension candidates. Maximal degree in co-relation 9609. Up to 1026 conditions per place. [2024-06-03 19:59:19,447 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 230 selfloop transitions, 93 changer transitions 0/325 dead transitions. [2024-06-03 19:59:19,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 325 transitions, 4865 flow [2024-06-03 19:59:19,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:19,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:19,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-03 19:59:19,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-03 19:59:19,448 INFO L175 Difference]: Start difference. First operand has 326 places, 308 transitions, 4169 flow. Second operand 10 states and 127 transitions. [2024-06-03 19:59:19,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 325 transitions, 4865 flow [2024-06-03 19:59:19,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 325 transitions, 4735 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:19,958 INFO L231 Difference]: Finished difference. Result has 328 places, 308 transitions, 4230 flow [2024-06-03 19:59:19,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4039, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4230, PETRI_PLACES=328, PETRI_TRANSITIONS=308} [2024-06-03 19:59:19,958 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-03 19:59:19,958 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 308 transitions, 4230 flow [2024-06-03 19:59:19,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:19,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:19,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:19,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-03 19:59:19,959 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:19,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:19,959 INFO L85 PathProgramCache]: Analyzing trace with hash -954921888, now seen corresponding path program 11 times [2024-06-03 19:59:19,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:19,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375950552] [2024-06-03 19:59:19,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:19,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:20,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:20,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375950552] [2024-06-03 19:59:20,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375950552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:20,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:20,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:59:20,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999418149] [2024-06-03 19:59:20,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:20,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:59:20,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:20,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:59:20,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:59:20,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:20,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 308 transitions, 4230 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:20,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:20,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:20,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:21,134 INFO L124 PetriNetUnfolderBase]: 767/1383 cut-off events. [2024-06-03 19:59:21,134 INFO L125 PetriNetUnfolderBase]: For 112610/112610 co-relation queries the response was YES. [2024-06-03 19:59:21,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9893 conditions, 1383 events. 767/1383 cut-off events. For 112610/112610 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7624 event pairs, 117 based on Foata normal form. 2/1385 useless extension candidates. Maximal degree in co-relation 9763. Up to 987 conditions per place. [2024-06-03 19:59:21,148 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 223 selfloop transitions, 102 changer transitions 0/327 dead transitions. [2024-06-03 19:59:21,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 327 transitions, 5111 flow [2024-06-03 19:59:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 19:59:21,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-03 19:59:21,148 INFO L175 Difference]: Start difference. First operand has 328 places, 308 transitions, 4230 flow. Second operand 10 states and 123 transitions. [2024-06-03 19:59:21,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 327 transitions, 5111 flow [2024-06-03 19:59:21,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 327 transitions, 4892 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-03 19:59:21,648 INFO L231 Difference]: Finished difference. Result has 329 places, 309 transitions, 4230 flow [2024-06-03 19:59:21,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4011, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4230, PETRI_PLACES=329, PETRI_TRANSITIONS=309} [2024-06-03 19:59:21,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-03 19:59:21,648 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 309 transitions, 4230 flow [2024-06-03 19:59:21,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:21,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:21,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:21,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-03 19:59:21,649 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:21,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:21,649 INFO L85 PathProgramCache]: Analyzing trace with hash -94738096, now seen corresponding path program 12 times [2024-06-03 19:59:21,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:21,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294531731] [2024-06-03 19:59:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:21,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:22,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:22,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294531731] [2024-06-03 19:59:22,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294531731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:22,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:22,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:59:22,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172248427] [2024-06-03 19:59:22,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:22,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:59:22,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:22,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:59:22,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:59:22,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:22,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 309 transitions, 4230 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:22,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:22,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:22,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:22,979 INFO L124 PetriNetUnfolderBase]: 771/1391 cut-off events. [2024-06-03 19:59:22,979 INFO L125 PetriNetUnfolderBase]: For 114614/114614 co-relation queries the response was YES. [2024-06-03 19:59:22,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9919 conditions, 1391 events. 771/1391 cut-off events. For 114614/114614 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7671 event pairs, 123 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 9788. Up to 1070 conditions per place. [2024-06-03 19:59:22,993 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 104 changer transitions 0/324 dead transitions. [2024-06-03 19:59:22,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 324 transitions, 4923 flow [2024-06-03 19:59:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:59:22,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:59:22,994 INFO L175 Difference]: Start difference. First operand has 329 places, 309 transitions, 4230 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:59:22,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 324 transitions, 4923 flow [2024-06-03 19:59:23,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 324 transitions, 4723 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-03 19:59:23,537 INFO L231 Difference]: Finished difference. Result has 332 places, 310 transitions, 4257 flow [2024-06-03 19:59:23,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4033, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4257, PETRI_PLACES=332, PETRI_TRANSITIONS=310} [2024-06-03 19:59:23,537 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-03 19:59:23,537 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 310 transitions, 4257 flow [2024-06-03 19:59:23,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:23,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:23,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:23,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-03 19:59:23,538 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:23,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:23,538 INFO L85 PathProgramCache]: Analyzing trace with hash -94742746, now seen corresponding path program 13 times [2024-06-03 19:59:23,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:23,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452592608] [2024-06-03 19:59:23,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:23,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:24,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:24,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:24,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452592608] [2024-06-03 19:59:24,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452592608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:24,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:24,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:59:24,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593273472] [2024-06-03 19:59:24,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:24,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:59:24,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:24,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:59:24,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:59:24,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:24,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 310 transitions, 4257 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:24,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:24,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:24,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:24,782 INFO L124 PetriNetUnfolderBase]: 775/1399 cut-off events. [2024-06-03 19:59:24,782 INFO L125 PetriNetUnfolderBase]: For 117069/117069 co-relation queries the response was YES. [2024-06-03 19:59:24,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9983 conditions, 1399 events. 775/1399 cut-off events. For 117069/117069 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7742 event pairs, 121 based on Foata normal form. 2/1401 useless extension candidates. Maximal degree in co-relation 9851. Up to 1064 conditions per place. [2024-06-03 19:59:24,795 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 220 selfloop transitions, 104 changer transitions 0/326 dead transitions. [2024-06-03 19:59:24,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 326 transitions, 4955 flow [2024-06-03 19:59:24,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:59:24,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-03 19:59:24,795 INFO L175 Difference]: Start difference. First operand has 332 places, 310 transitions, 4257 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:59:24,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 326 transitions, 4955 flow [2024-06-03 19:59:25,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 326 transitions, 4745 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:25,359 INFO L231 Difference]: Finished difference. Result has 334 places, 311 transitions, 4273 flow [2024-06-03 19:59:25,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4047, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4273, PETRI_PLACES=334, PETRI_TRANSITIONS=311} [2024-06-03 19:59:25,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-03 19:59:25,360 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 311 transitions, 4273 flow [2024-06-03 19:59:25,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:25,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:25,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:25,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-03 19:59:25,360 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:25,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:25,360 INFO L85 PathProgramCache]: Analyzing trace with hash 76144010, now seen corresponding path program 4 times [2024-06-03 19:59:25,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:25,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395121445] [2024-06-03 19:59:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:25,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:26,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:26,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395121445] [2024-06-03 19:59:26,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395121445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:26,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:26,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:26,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159034440] [2024-06-03 19:59:26,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:26,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:26,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:26,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:26,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:26,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:26,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 311 transitions, 4273 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:26,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:26,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:26,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:27,304 INFO L124 PetriNetUnfolderBase]: 781/1409 cut-off events. [2024-06-03 19:59:27,304 INFO L125 PetriNetUnfolderBase]: For 119787/119787 co-relation queries the response was YES. [2024-06-03 19:59:27,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10056 conditions, 1409 events. 781/1409 cut-off events. For 119787/119787 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7827 event pairs, 132 based on Foata normal form. 2/1411 useless extension candidates. Maximal degree in co-relation 9923. Up to 773 conditions per place. [2024-06-03 19:59:27,318 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 123 changer transitions 0/334 dead transitions. [2024-06-03 19:59:27,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 334 transitions, 5377 flow [2024-06-03 19:59:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:27,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-03 19:59:27,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-03 19:59:27,319 INFO L175 Difference]: Start difference. First operand has 334 places, 311 transitions, 4273 flow. Second operand 11 states and 139 transitions. [2024-06-03 19:59:27,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 334 transitions, 5377 flow [2024-06-03 19:59:27,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 334 transitions, 5165 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:27,880 INFO L231 Difference]: Finished difference. Result has 337 places, 313 transitions, 4332 flow [2024-06-03 19:59:27,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4061, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4332, PETRI_PLACES=337, PETRI_TRANSITIONS=313} [2024-06-03 19:59:27,881 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-03 19:59:27,881 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 313 transitions, 4332 flow [2024-06-03 19:59:27,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:27,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:27,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:27,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-03 19:59:27,881 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:27,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:27,881 INFO L85 PathProgramCache]: Analyzing trace with hash -90274096, now seen corresponding path program 14 times [2024-06-03 19:59:27,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:27,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551952640] [2024-06-03 19:59:27,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:27,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:28,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:28,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551952640] [2024-06-03 19:59:28,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551952640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:28,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:28,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:59:28,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106739395] [2024-06-03 19:59:28,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:28,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:59:28,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:28,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:59:28,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:59:28,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:28,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 313 transitions, 4332 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:28,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:28,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:28,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:29,346 INFO L124 PetriNetUnfolderBase]: 785/1417 cut-off events. [2024-06-03 19:59:29,346 INFO L125 PetriNetUnfolderBase]: For 123150/123150 co-relation queries the response was YES. [2024-06-03 19:59:29,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10196 conditions, 1417 events. 785/1417 cut-off events. For 123150/123150 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7888 event pairs, 146 based on Foata normal form. 2/1419 useless extension candidates. Maximal degree in co-relation 10062. Up to 1171 conditions per place. [2024-06-03 19:59:29,360 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 256 selfloop transitions, 74 changer transitions 0/332 dead transitions. [2024-06-03 19:59:29,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 332 transitions, 5236 flow [2024-06-03 19:59:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:29,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:29,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:59:29,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 19:59:29,361 INFO L175 Difference]: Start difference. First operand has 337 places, 313 transitions, 4332 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:59:29,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 332 transitions, 5236 flow [2024-06-03 19:59:29,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 332 transitions, 4984 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 19:59:29,838 INFO L231 Difference]: Finished difference. Result has 338 places, 314 transitions, 4247 flow [2024-06-03 19:59:29,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4080, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4247, PETRI_PLACES=338, PETRI_TRANSITIONS=314} [2024-06-03 19:59:29,839 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-03 19:59:29,839 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 314 transitions, 4247 flow [2024-06-03 19:59:29,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:29,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:29,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:29,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-03 19:59:29,839 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:29,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:29,840 INFO L85 PathProgramCache]: Analyzing trace with hash 75964520, now seen corresponding path program 5 times [2024-06-03 19:59:29,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:29,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646799609] [2024-06-03 19:59:29,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:29,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:30,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:30,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646799609] [2024-06-03 19:59:30,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646799609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:30,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:30,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:59:30,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132724878] [2024-06-03 19:59:30,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:30,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:59:30,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:30,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:59:30,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:59:31,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:31,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 314 transitions, 4247 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:31,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:31,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:31,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:31,547 INFO L124 PetriNetUnfolderBase]: 791/1427 cut-off events. [2024-06-03 19:59:31,547 INFO L125 PetriNetUnfolderBase]: For 125249/125249 co-relation queries the response was YES. [2024-06-03 19:59:31,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10125 conditions, 1427 events. 791/1427 cut-off events. For 125249/125249 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7954 event pairs, 143 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 9990. Up to 1040 conditions per place. [2024-06-03 19:59:31,561 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 235 selfloop transitions, 99 changer transitions 0/336 dead transitions. [2024-06-03 19:59:31,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 336 transitions, 5179 flow [2024-06-03 19:59:31,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:31,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-03 19:59:31,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-03 19:59:31,562 INFO L175 Difference]: Start difference. First operand has 338 places, 314 transitions, 4247 flow. Second operand 10 states and 131 transitions. [2024-06-03 19:59:31,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 336 transitions, 5179 flow [2024-06-03 19:59:32,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 336 transitions, 5044 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 19:59:32,071 INFO L231 Difference]: Finished difference. Result has 341 places, 316 transitions, 4336 flow [2024-06-03 19:59:32,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4112, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4336, PETRI_PLACES=341, PETRI_TRANSITIONS=316} [2024-06-03 19:59:32,071 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-03 19:59:32,071 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 316 transitions, 4336 flow [2024-06-03 19:59:32,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:32,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:32,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:32,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-03 19:59:32,071 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:32,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:32,072 INFO L85 PathProgramCache]: Analyzing trace with hash 76137500, now seen corresponding path program 6 times [2024-06-03 19:59:32,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:32,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738777167] [2024-06-03 19:59:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:32,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:33,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:33,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:33,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738777167] [2024-06-03 19:59:33,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738777167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:33,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:33,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:33,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843163817] [2024-06-03 19:59:33,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:33,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:33,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:33,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:33,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:33,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:33,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 316 transitions, 4336 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:33,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:33,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:33,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:33,833 INFO L124 PetriNetUnfolderBase]: 797/1437 cut-off events. [2024-06-03 19:59:33,834 INFO L125 PetriNetUnfolderBase]: For 128365/128365 co-relation queries the response was YES. [2024-06-03 19:59:33,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10284 conditions, 1437 events. 797/1437 cut-off events. For 128365/128365 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8023 event pairs, 138 based on Foata normal form. 2/1439 useless extension candidates. Maximal degree in co-relation 10148. Up to 1103 conditions per place. [2024-06-03 19:59:33,849 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 85 changer transitions 0/337 dead transitions. [2024-06-03 19:59:33,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 337 transitions, 5086 flow [2024-06-03 19:59:33,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 19:59:33,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 19:59:33,849 INFO L175 Difference]: Start difference. First operand has 341 places, 316 transitions, 4336 flow. Second operand 11 states and 133 transitions. [2024-06-03 19:59:33,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 337 transitions, 5086 flow [2024-06-03 19:59:34,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 337 transitions, 4897 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 19:59:34,403 INFO L231 Difference]: Finished difference. Result has 345 places, 318 transitions, 4350 flow [2024-06-03 19:59:34,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4151, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4350, PETRI_PLACES=345, PETRI_TRANSITIONS=318} [2024-06-03 19:59:34,404 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-03 19:59:34,404 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 318 transitions, 4350 flow [2024-06-03 19:59:34,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:34,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:34,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:34,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-03 19:59:34,404 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:34,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:34,404 INFO L85 PathProgramCache]: Analyzing trace with hash -90269446, now seen corresponding path program 15 times [2024-06-03 19:59:34,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:34,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317882285] [2024-06-03 19:59:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:34,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:35,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:35,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317882285] [2024-06-03 19:59:35,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317882285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:35,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:35,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:59:35,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2236248] [2024-06-03 19:59:35,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:35,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:59:35,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:35,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:59:35,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:59:35,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:35,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 318 transitions, 4350 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:35,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:35,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:35,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:35,739 INFO L124 PetriNetUnfolderBase]: 801/1445 cut-off events. [2024-06-03 19:59:35,739 INFO L125 PetriNetUnfolderBase]: For 130710/130710 co-relation queries the response was YES. [2024-06-03 19:59:35,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10338 conditions, 1445 events. 801/1445 cut-off events. For 130710/130710 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8083 event pairs, 148 based on Foata normal form. 2/1447 useless extension candidates. Maximal degree in co-relation 10201. Up to 1248 conditions per place. [2024-06-03 19:59:35,753 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 261 selfloop transitions, 71 changer transitions 0/334 dead transitions. [2024-06-03 19:59:35,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 334 transitions, 5068 flow [2024-06-03 19:59:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:35,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:35,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 19:59:35,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-03 19:59:35,754 INFO L175 Difference]: Start difference. First operand has 345 places, 318 transitions, 4350 flow. Second operand 10 states and 119 transitions. [2024-06-03 19:59:35,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 334 transitions, 5068 flow [2024-06-03 19:59:36,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 334 transitions, 4908 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:36,330 INFO L231 Difference]: Finished difference. Result has 347 places, 319 transitions, 4353 flow [2024-06-03 19:59:36,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4190, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4353, PETRI_PLACES=347, PETRI_TRANSITIONS=319} [2024-06-03 19:59:36,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-03 19:59:36,330 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 319 transitions, 4353 flow [2024-06-03 19:59:36,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:36,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:36,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:36,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-03 19:59:36,330 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:36,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:36,331 INFO L85 PathProgramCache]: Analyzing trace with hash 76137314, now seen corresponding path program 16 times [2024-06-03 19:59:36,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:36,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72415236] [2024-06-03 19:59:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:36,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:37,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:37,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72415236] [2024-06-03 19:59:37,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72415236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:37,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:37,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:37,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705210411] [2024-06-03 19:59:37,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:37,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:37,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:37,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:37,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:37,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:37,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 319 transitions, 4353 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:37,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:37,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:37,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:37,869 INFO L124 PetriNetUnfolderBase]: 805/1453 cut-off events. [2024-06-03 19:59:37,870 INFO L125 PetriNetUnfolderBase]: For 133444/133444 co-relation queries the response was YES. [2024-06-03 19:59:37,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10351 conditions, 1453 events. 805/1453 cut-off events. For 133444/133444 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8122 event pairs, 127 based on Foata normal form. 2/1455 useless extension candidates. Maximal degree in co-relation 10213. Up to 1132 conditions per place. [2024-06-03 19:59:37,884 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 108 changer transitions 0/334 dead transitions. [2024-06-03 19:59:37,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 334 transitions, 5067 flow [2024-06-03 19:59:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 19:59:37,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 19:59:37,885 INFO L175 Difference]: Start difference. First operand has 347 places, 319 transitions, 4353 flow. Second operand 11 states and 125 transitions. [2024-06-03 19:59:37,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 334 transitions, 5067 flow [2024-06-03 19:59:38,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 334 transitions, 4918 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:38,615 INFO L231 Difference]: Finished difference. Result has 350 places, 320 transitions, 4442 flow [2024-06-03 19:59:38,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4204, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4442, PETRI_PLACES=350, PETRI_TRANSITIONS=320} [2024-06-03 19:59:38,615 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-03 19:59:38,615 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 320 transitions, 4442 flow [2024-06-03 19:59:38,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:38,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:38,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:38,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-03 19:59:38,615 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:38,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:38,616 INFO L85 PathProgramCache]: Analyzing trace with hash 82393424, now seen corresponding path program 17 times [2024-06-03 19:59:38,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:38,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960691388] [2024-06-03 19:59:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:38,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:39,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:39,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960691388] [2024-06-03 19:59:39,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960691388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:39,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:39,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:39,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826464521] [2024-06-03 19:59:39,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:39,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:39,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:39,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:39,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:39,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:39,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 320 transitions, 4442 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:39,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:39,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:39,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:40,225 INFO L124 PetriNetUnfolderBase]: 809/1461 cut-off events. [2024-06-03 19:59:40,226 INFO L125 PetriNetUnfolderBase]: For 136263/136263 co-relation queries the response was YES. [2024-06-03 19:59:40,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10494 conditions, 1461 events. 809/1461 cut-off events. For 136263/136263 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8215 event pairs, 149 based on Foata normal form. 2/1463 useless extension candidates. Maximal degree in co-relation 10355. Up to 1292 conditions per place. [2024-06-03 19:59:40,240 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 276 selfloop transitions, 57 changer transitions 0/335 dead transitions. [2024-06-03 19:59:40,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 335 transitions, 5160 flow [2024-06-03 19:59:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 19:59:40,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-03 19:59:40,241 INFO L175 Difference]: Start difference. First operand has 350 places, 320 transitions, 4442 flow. Second operand 11 states and 119 transitions. [2024-06-03 19:59:40,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 335 transitions, 5160 flow [2024-06-03 19:59:40,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 335 transitions, 4936 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-03 19:59:40,902 INFO L231 Difference]: Finished difference. Result has 352 places, 321 transitions, 4356 flow [2024-06-03 19:59:40,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4218, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4356, PETRI_PLACES=352, PETRI_TRANSITIONS=321} [2024-06-03 19:59:40,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-03 19:59:40,902 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 321 transitions, 4356 flow [2024-06-03 19:59:40,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:40,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:40,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:40,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-03 19:59:40,903 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:40,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:40,903 INFO L85 PathProgramCache]: Analyzing trace with hash 82400120, now seen corresponding path program 7 times [2024-06-03 19:59:40,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:40,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994243434] [2024-06-03 19:59:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:40,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:42,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:42,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994243434] [2024-06-03 19:59:42,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994243434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:42,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:42,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:42,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001313260] [2024-06-03 19:59:42,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:42,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:42,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:42,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:42,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:42,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:42,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 321 transitions, 4356 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:42,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:42,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:42,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:42,983 INFO L124 PetriNetUnfolderBase]: 815/1471 cut-off events. [2024-06-03 19:59:42,983 INFO L125 PetriNetUnfolderBase]: For 138566/138566 co-relation queries the response was YES. [2024-06-03 19:59:42,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10455 conditions, 1471 events. 815/1471 cut-off events. For 138566/138566 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8300 event pairs, 137 based on Foata normal form. 2/1473 useless extension candidates. Maximal degree in co-relation 10315. Up to 1146 conditions per place. [2024-06-03 19:59:42,998 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 256 selfloop transitions, 83 changer transitions 0/341 dead transitions. [2024-06-03 19:59:42,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 341 transitions, 5110 flow [2024-06-03 19:59:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:59:42,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 19:59:42,999 INFO L175 Difference]: Start difference. First operand has 352 places, 321 transitions, 4356 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:59:42,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 341 transitions, 5110 flow [2024-06-03 19:59:43,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 341 transitions, 4986 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-03 19:59:43,717 INFO L231 Difference]: Finished difference. Result has 354 places, 323 transitions, 4431 flow [2024-06-03 19:59:43,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4232, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4431, PETRI_PLACES=354, PETRI_TRANSITIONS=323} [2024-06-03 19:59:43,717 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-03 19:59:43,717 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 323 transitions, 4431 flow [2024-06-03 19:59:43,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:43,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:43,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:43,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-03 19:59:43,718 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:43,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:43,718 INFO L85 PathProgramCache]: Analyzing trace with hash 82630760, now seen corresponding path program 8 times [2024-06-03 19:59:43,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:43,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134787767] [2024-06-03 19:59:43,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:43,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:44,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:44,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134787767] [2024-06-03 19:59:44,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134787767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:44,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:44,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:44,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132652004] [2024-06-03 19:59:44,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:44,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:44,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:44,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:44,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:44,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:44,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 323 transitions, 4431 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:44,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:44,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:44,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:45,477 INFO L124 PetriNetUnfolderBase]: 821/1481 cut-off events. [2024-06-03 19:59:45,477 INFO L125 PetriNetUnfolderBase]: For 141896/141896 co-relation queries the response was YES. [2024-06-03 19:59:45,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10611 conditions, 1481 events. 821/1481 cut-off events. For 141896/141896 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8349 event pairs, 138 based on Foata normal form. 2/1483 useless extension candidates. Maximal degree in co-relation 10470. Up to 1156 conditions per place. [2024-06-03 19:59:45,493 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 85 changer transitions 0/342 dead transitions. [2024-06-03 19:59:45,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 342 transitions, 5187 flow [2024-06-03 19:59:45,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 19:59:45,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 19:59:45,494 INFO L175 Difference]: Start difference. First operand has 354 places, 323 transitions, 4431 flow. Second operand 11 states and 127 transitions. [2024-06-03 19:59:45,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 342 transitions, 5187 flow [2024-06-03 19:59:46,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 342 transitions, 5028 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:46,187 INFO L231 Difference]: Finished difference. Result has 357 places, 325 transitions, 4479 flow [2024-06-03 19:59:46,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4272, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4479, PETRI_PLACES=357, PETRI_TRANSITIONS=325} [2024-06-03 19:59:46,188 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-03 19:59:46,188 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 325 transitions, 4479 flow [2024-06-03 19:59:46,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:46,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:46,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:46,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-03 19:59:46,188 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:46,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:46,189 INFO L85 PathProgramCache]: Analyzing trace with hash 82639688, now seen corresponding path program 1 times [2024-06-03 19:59:46,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:46,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19952185] [2024-06-03 19:59:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:46,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:47,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:47,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19952185] [2024-06-03 19:59:47,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19952185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:47,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:47,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:47,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793726528] [2024-06-03 19:59:47,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:47,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:47,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:47,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:47,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:47,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:47,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 325 transitions, 4479 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:47,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:47,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:47,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:48,203 INFO L124 PetriNetUnfolderBase]: 829/1497 cut-off events. [2024-06-03 19:59:48,203 INFO L125 PetriNetUnfolderBase]: For 155040/155040 co-relation queries the response was YES. [2024-06-03 19:59:48,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10759 conditions, 1497 events. 829/1497 cut-off events. For 155040/155040 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8491 event pairs, 151 based on Foata normal form. 4/1501 useless extension candidates. Maximal degree in co-relation 10617. Up to 1168 conditions per place. [2024-06-03 19:59:48,219 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 257 selfloop transitions, 85 changer transitions 0/344 dead transitions. [2024-06-03 19:59:48,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 344 transitions, 5249 flow [2024-06-03 19:59:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:48,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:48,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 19:59:48,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-03 19:59:48,220 INFO L175 Difference]: Start difference. First operand has 357 places, 325 transitions, 4479 flow. Second operand 11 states and 131 transitions. [2024-06-03 19:59:48,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 344 transitions, 5249 flow [2024-06-03 19:59:48,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 344 transitions, 5081 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:48,819 INFO L231 Difference]: Finished difference. Result has 360 places, 327 transitions, 4530 flow [2024-06-03 19:59:48,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4311, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4530, PETRI_PLACES=360, PETRI_TRANSITIONS=327} [2024-06-03 19:59:48,819 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-03 19:59:48,819 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 327 transitions, 4530 flow [2024-06-03 19:59:48,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:48,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:48,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:48,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-03 19:59:48,820 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:48,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:48,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1005000940, now seen corresponding path program 9 times [2024-06-03 19:59:48,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:48,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89846499] [2024-06-03 19:59:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:48,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:49,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:49,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89846499] [2024-06-03 19:59:49,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89846499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:49,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:49,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:49,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374909138] [2024-06-03 19:59:49,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:49,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:49,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:49,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:49,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:50,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:50,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 327 transitions, 4530 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:50,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:50,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:50,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:50,707 INFO L124 PetriNetUnfolderBase]: 835/1507 cut-off events. [2024-06-03 19:59:50,707 INFO L125 PetriNetUnfolderBase]: For 148135/148135 co-relation queries the response was YES. [2024-06-03 19:59:50,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10856 conditions, 1507 events. 835/1507 cut-off events. For 148135/148135 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8528 event pairs, 134 based on Foata normal form. 2/1509 useless extension candidates. Maximal degree in co-relation 10713. Up to 851 conditions per place. [2024-06-03 19:59:50,722 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 138 changer transitions 0/352 dead transitions. [2024-06-03 19:59:50,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 352 transitions, 5728 flow [2024-06-03 19:59:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:59:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:59:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-03 19:59:50,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-03 19:59:50,723 INFO L175 Difference]: Start difference. First operand has 360 places, 327 transitions, 4530 flow. Second operand 12 states and 149 transitions. [2024-06-03 19:59:50,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 352 transitions, 5728 flow [2024-06-03 19:59:51,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 352 transitions, 5529 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:51,357 INFO L231 Difference]: Finished difference. Result has 364 places, 329 transitions, 4644 flow [2024-06-03 19:59:51,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4644, PETRI_PLACES=364, PETRI_TRANSITIONS=329} [2024-06-03 19:59:51,357 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-03 19:59:51,357 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 329 transitions, 4644 flow [2024-06-03 19:59:51,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:51,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:51,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:51,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-03 19:59:51,357 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:51,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:51,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1627034032, now seen corresponding path program 10 times [2024-06-03 19:59:51,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:51,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767281475] [2024-06-03 19:59:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:51,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:52,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:52,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767281475] [2024-06-03 19:59:52,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767281475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:52,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:52,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:52,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013471394] [2024-06-03 19:59:52,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:52,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:52,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:52,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:52,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:52,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:52,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 329 transitions, 4644 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:52,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:52,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:52,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:53,299 INFO L124 PetriNetUnfolderBase]: 841/1517 cut-off events. [2024-06-03 19:59:53,299 INFO L125 PetriNetUnfolderBase]: For 151139/151139 co-relation queries the response was YES. [2024-06-03 19:59:53,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11013 conditions, 1517 events. 841/1517 cut-off events. For 151139/151139 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8613 event pairs, 139 based on Foata normal form. 2/1519 useless extension candidates. Maximal degree in co-relation 10869. Up to 857 conditions per place. [2024-06-03 19:59:53,316 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 222 selfloop transitions, 128 changer transitions 0/352 dead transitions. [2024-06-03 19:59:53,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 352 transitions, 5844 flow [2024-06-03 19:59:53,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-03 19:59:53,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-03 19:59:53,317 INFO L175 Difference]: Start difference. First operand has 364 places, 329 transitions, 4644 flow. Second operand 11 states and 141 transitions. [2024-06-03 19:59:53,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 352 transitions, 5844 flow [2024-06-03 19:59:54,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 352 transitions, 5598 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-03 19:59:54,024 INFO L231 Difference]: Finished difference. Result has 366 places, 331 transitions, 4695 flow [2024-06-03 19:59:54,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4400, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4695, PETRI_PLACES=366, PETRI_TRANSITIONS=331} [2024-06-03 19:59:54,024 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-03 19:59:54,024 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 331 transitions, 4695 flow [2024-06-03 19:59:54,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:54,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:54,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:54,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-03 19:59:54,024 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:54,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:54,025 INFO L85 PathProgramCache]: Analyzing trace with hash -90096466, now seen corresponding path program 18 times [2024-06-03 19:59:54,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:54,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231797060] [2024-06-03 19:59:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:54,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:54,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:54,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231797060] [2024-06-03 19:59:54,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231797060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:54,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:54,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:54,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834620504] [2024-06-03 19:59:54,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:54,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:54,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:54,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:54,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:54,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:54,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 331 transitions, 4695 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:54,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:54,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:54,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:55,599 INFO L124 PetriNetUnfolderBase]: 838/1512 cut-off events. [2024-06-03 19:59:55,599 INFO L125 PetriNetUnfolderBase]: For 144259/144259 co-relation queries the response was YES. [2024-06-03 19:59:55,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10780 conditions, 1512 events. 838/1512 cut-off events. For 144259/144259 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8556 event pairs, 132 based on Foata normal form. 2/1514 useless extension candidates. Maximal degree in co-relation 10635. Up to 1185 conditions per place. [2024-06-03 19:59:55,615 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 105 changer transitions 0/346 dead transitions. [2024-06-03 19:59:55,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 346 transitions, 5421 flow [2024-06-03 19:59:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:55,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 19:59:55,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 19:59:55,616 INFO L175 Difference]: Start difference. First operand has 366 places, 331 transitions, 4695 flow. Second operand 11 states and 128 transitions. [2024-06-03 19:59:55,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 346 transitions, 5421 flow [2024-06-03 19:59:56,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 346 transitions, 5178 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:56,356 INFO L231 Difference]: Finished difference. Result has 369 places, 331 transitions, 4668 flow [2024-06-03 19:59:56,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4452, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4668, PETRI_PLACES=369, PETRI_TRANSITIONS=331} [2024-06-03 19:59:56,356 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-03 19:59:56,356 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 331 transitions, 4668 flow [2024-06-03 19:59:56,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:56,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:56,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:56,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-03 19:59:56,357 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:56,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash -90096280, now seen corresponding path program 11 times [2024-06-03 19:59:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:56,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518642418] [2024-06-03 19:59:56,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:56,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:57,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:57,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518642418] [2024-06-03 19:59:57,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518642418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:57,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:57,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:57,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606805299] [2024-06-03 19:59:57,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:57,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:57,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:57,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:57,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:57,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:57,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 331 transitions, 4668 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:57,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:57,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:57,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:58,096 INFO L124 PetriNetUnfolderBase]: 834/1506 cut-off events. [2024-06-03 19:59:58,096 INFO L125 PetriNetUnfolderBase]: For 135686/135686 co-relation queries the response was YES. [2024-06-03 19:59:58,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10462 conditions, 1506 events. 834/1506 cut-off events. For 135686/135686 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8546 event pairs, 140 based on Foata normal form. 2/1508 useless extension candidates. Maximal degree in co-relation 10316. Up to 1172 conditions per place. [2024-06-03 19:59:58,111 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 262 selfloop transitions, 87 changer transitions 0/351 dead transitions. [2024-06-03 19:59:58,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 351 transitions, 5426 flow [2024-06-03 19:59:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-03 19:59:58,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-03 19:59:58,112 INFO L175 Difference]: Start difference. First operand has 369 places, 331 transitions, 4668 flow. Second operand 11 states and 136 transitions. [2024-06-03 19:59:58,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 351 transitions, 5426 flow [2024-06-03 19:59:58,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 351 transitions, 5198 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-03 19:59:58,765 INFO L231 Difference]: Finished difference. Result has 370 places, 331 transitions, 4619 flow [2024-06-03 19:59:58,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4440, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4619, PETRI_PLACES=370, PETRI_TRANSITIONS=331} [2024-06-03 19:59:58,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 339 predicate places. [2024-06-03 19:59:58,766 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 331 transitions, 4619 flow [2024-06-03 19:59:58,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:58,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:58,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:58,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-03 19:59:58,766 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:58,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1338834570, now seen corresponding path program 19 times [2024-06-03 19:59:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:58,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091988788] [2024-06-03 19:59:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:58,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:59,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:59,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091988788] [2024-06-03 19:59:59,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091988788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:59,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:59,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:59:59,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739560394] [2024-06-03 19:59:59,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:59,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:59:59,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:59,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:59:59,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:59:59,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:59,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 331 transitions, 4619 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:59:59,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:59,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:59,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:59,923 INFO L124 PetriNetUnfolderBase]: 838/1514 cut-off events. [2024-06-03 19:59:59,924 INFO L125 PetriNetUnfolderBase]: For 133522/133522 co-relation queries the response was YES. [2024-06-03 19:59:59,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10448 conditions, 1514 events. 838/1514 cut-off events. For 133522/133522 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8627 event pairs, 107 based on Foata normal form. 2/1516 useless extension candidates. Maximal degree in co-relation 10302. Up to 705 conditions per place. [2024-06-03 19:59:59,938 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 221 selfloop transitions, 124 changer transitions 0/347 dead transitions. [2024-06-03 19:59:59,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 347 transitions, 5558 flow [2024-06-03 19:59:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:59:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:59:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 19:59:59,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:59:59,939 INFO L175 Difference]: Start difference. First operand has 370 places, 331 transitions, 4619 flow. Second operand 9 states and 99 transitions. [2024-06-03 19:59:59,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 347 transitions, 5558 flow [2024-06-03 20:00:00,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 347 transitions, 5161 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-06-03 20:00:00,502 INFO L231 Difference]: Finished difference. Result has 364 places, 332 transitions, 4491 flow [2024-06-03 20:00:00,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4222, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4491, PETRI_PLACES=364, PETRI_TRANSITIONS=332} [2024-06-03 20:00:00,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-03 20:00:00,502 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 332 transitions, 4491 flow [2024-06-03 20:00:00,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:00,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:00,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:00,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-03 20:00:00,503 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:00,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:00,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1397046990, now seen corresponding path program 20 times [2024-06-03 20:00:00,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:00,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380945878] [2024-06-03 20:00:00,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:00,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:01,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:01,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380945878] [2024-06-03 20:00:01,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380945878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:01,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:01,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:01,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080498807] [2024-06-03 20:00:01,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:01,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:01,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:01,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:01,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:01,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:01,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 332 transitions, 4491 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:01,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:01,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:01,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:01,878 INFO L124 PetriNetUnfolderBase]: 842/1522 cut-off events. [2024-06-03 20:00:01,878 INFO L125 PetriNetUnfolderBase]: For 134139/134139 co-relation queries the response was YES. [2024-06-03 20:00:01,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10492 conditions, 1522 events. 842/1522 cut-off events. For 134139/134139 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8681 event pairs, 133 based on Foata normal form. 2/1524 useless extension candidates. Maximal degree in co-relation 10345. Up to 1183 conditions per place. [2024-06-03 20:00:01,891 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 219 selfloop transitions, 123 changer transitions 0/344 dead transitions. [2024-06-03 20:00:01,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 344 transitions, 5214 flow [2024-06-03 20:00:01,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:01,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 20:00:01,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-03 20:00:01,892 INFO L175 Difference]: Start difference. First operand has 364 places, 332 transitions, 4491 flow. Second operand 9 states and 107 transitions. [2024-06-03 20:00:01,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 344 transitions, 5214 flow [2024-06-03 20:00:02,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 344 transitions, 5029 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 20:00:02,591 INFO L231 Difference]: Finished difference. Result has 365 places, 333 transitions, 4577 flow [2024-06-03 20:00:02,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4307, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4577, PETRI_PLACES=365, PETRI_TRANSITIONS=333} [2024-06-03 20:00:02,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-03 20:00:02,592 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 333 transitions, 4577 flow [2024-06-03 20:00:02,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:02,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:02,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:02,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-03 20:00:02,592 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:02,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1794246240, now seen corresponding path program 21 times [2024-06-03 20:00:02,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:02,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735792911] [2024-06-03 20:00:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:02,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:03,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:03,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735792911] [2024-06-03 20:00:03,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735792911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:03,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:03,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:03,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291795441] [2024-06-03 20:00:03,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:03,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:03,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:03,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:03,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:03,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:03,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 333 transitions, 4577 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:03,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:03,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:03,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:03,783 INFO L124 PetriNetUnfolderBase]: 846/1530 cut-off events. [2024-06-03 20:00:03,783 INFO L125 PetriNetUnfolderBase]: For 131677/131677 co-relation queries the response was YES. [2024-06-03 20:00:03,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10563 conditions, 1530 events. 846/1530 cut-off events. For 131677/131677 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8730 event pairs, 129 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 10417. Up to 1147 conditions per place. [2024-06-03 20:00:03,799 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 123 changer transitions 0/346 dead transitions. [2024-06-03 20:00:03,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 346 transitions, 5307 flow [2024-06-03 20:00:03,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:03,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 20:00:03,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-03 20:00:03,800 INFO L175 Difference]: Start difference. First operand has 365 places, 333 transitions, 4577 flow. Second operand 9 states and 107 transitions. [2024-06-03 20:00:03,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 346 transitions, 5307 flow [2024-06-03 20:00:04,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 346 transitions, 5065 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 20:00:04,391 INFO L231 Difference]: Finished difference. Result has 367 places, 334 transitions, 4604 flow [2024-06-03 20:00:04,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4335, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4604, PETRI_PLACES=367, PETRI_TRANSITIONS=334} [2024-06-03 20:00:04,399 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 336 predicate places. [2024-06-03 20:00:04,399 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 334 transitions, 4604 flow [2024-06-03 20:00:04,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:04,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:04,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:04,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-03 20:00:04,400 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:04,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1794361560, now seen corresponding path program 22 times [2024-06-03 20:00:04,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:04,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65449162] [2024-06-03 20:00:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:04,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:05,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65449162] [2024-06-03 20:00:05,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65449162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:05,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:05,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:05,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273706980] [2024-06-03 20:00:05,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:05,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:05,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:05,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:05,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:05,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:05,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 334 transitions, 4604 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:05,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:05,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:05,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:05,618 INFO L124 PetriNetUnfolderBase]: 857/1551 cut-off events. [2024-06-03 20:00:05,618 INFO L125 PetriNetUnfolderBase]: For 145199/145199 co-relation queries the response was YES. [2024-06-03 20:00:05,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10920 conditions, 1551 events. 857/1551 cut-off events. For 145199/145199 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8893 event pairs, 126 based on Foata normal form. 2/1553 useless extension candidates. Maximal degree in co-relation 10773. Up to 1035 conditions per place. [2024-06-03 20:00:05,635 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 224 selfloop transitions, 124 changer transitions 0/350 dead transitions. [2024-06-03 20:00:05,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 350 transitions, 5570 flow [2024-06-03 20:00:05,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-03 20:00:05,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-03 20:00:05,636 INFO L175 Difference]: Start difference. First operand has 367 places, 334 transitions, 4604 flow. Second operand 9 states and 106 transitions. [2024-06-03 20:00:05,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 350 transitions, 5570 flow [2024-06-03 20:00:06,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 350 transitions, 5316 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 20:00:06,368 INFO L231 Difference]: Finished difference. Result has 368 places, 336 transitions, 4641 flow [2024-06-03 20:00:06,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4352, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4641, PETRI_PLACES=368, PETRI_TRANSITIONS=336} [2024-06-03 20:00:06,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-03 20:00:06,369 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 336 transitions, 4641 flow [2024-06-03 20:00:06,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:06,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:06,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:06,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-03 20:00:06,369 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:06,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:06,369 INFO L85 PathProgramCache]: Analyzing trace with hash 897852846, now seen corresponding path program 12 times [2024-06-03 20:00:06,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:06,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677015602] [2024-06-03 20:00:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:06,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:07,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677015602] [2024-06-03 20:00:07,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677015602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:07,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:07,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:07,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614906053] [2024-06-03 20:00:07,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:07,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:07,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:07,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:07,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:07,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:07,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 336 transitions, 4641 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:07,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:07,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:07,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:08,228 INFO L124 PetriNetUnfolderBase]: 863/1561 cut-off events. [2024-06-03 20:00:08,228 INFO L125 PetriNetUnfolderBase]: For 145690/145690 co-relation queries the response was YES. [2024-06-03 20:00:08,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10992 conditions, 1561 events. 863/1561 cut-off events. For 145690/145690 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8968 event pairs, 152 based on Foata normal form. 2/1563 useless extension candidates. Maximal degree in co-relation 10845. Up to 1228 conditions per place. [2024-06-03 20:00:08,246 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 256 selfloop transitions, 94 changer transitions 0/352 dead transitions. [2024-06-03 20:00:08,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 352 transitions, 5397 flow [2024-06-03 20:00:08,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 20:00:08,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-03 20:00:08,247 INFO L175 Difference]: Start difference. First operand has 368 places, 336 transitions, 4641 flow. Second operand 10 states and 116 transitions. [2024-06-03 20:00:08,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 352 transitions, 5397 flow [2024-06-03 20:00:08,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 352 transitions, 5251 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 20:00:08,890 INFO L231 Difference]: Finished difference. Result has 372 places, 338 transitions, 4713 flow [2024-06-03 20:00:08,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4495, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4713, PETRI_PLACES=372, PETRI_TRANSITIONS=338} [2024-06-03 20:00:08,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-06-03 20:00:08,890 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 338 transitions, 4713 flow [2024-06-03 20:00:08,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:08,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:08,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:08,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-03 20:00:08,891 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:08,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:08,892 INFO L85 PathProgramCache]: Analyzing trace with hash 897846150, now seen corresponding path program 23 times [2024-06-03 20:00:08,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:08,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496982932] [2024-06-03 20:00:08,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:08,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:09,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:09,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496982932] [2024-06-03 20:00:09,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496982932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:09,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:09,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:09,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174545396] [2024-06-03 20:00:09,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:09,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:09,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:09,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:09,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:09,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:09,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 338 transitions, 4713 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:09,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:09,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:09,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:10,491 INFO L124 PetriNetUnfolderBase]: 867/1569 cut-off events. [2024-06-03 20:00:10,491 INFO L125 PetriNetUnfolderBase]: For 145658/145658 co-relation queries the response was YES. [2024-06-03 20:00:10,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11215 conditions, 1569 events. 867/1569 cut-off events. For 145658/145658 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9016 event pairs, 138 based on Foata normal form. 2/1571 useless extension candidates. Maximal degree in co-relation 11067. Up to 1218 conditions per place. [2024-06-03 20:00:10,509 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 125 changer transitions 0/351 dead transitions. [2024-06-03 20:00:10,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 351 transitions, 5457 flow [2024-06-03 20:00:10,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 20:00:10,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 20:00:10,509 INFO L175 Difference]: Start difference. First operand has 372 places, 338 transitions, 4713 flow. Second operand 10 states and 115 transitions. [2024-06-03 20:00:10,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 351 transitions, 5457 flow [2024-06-03 20:00:11,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 351 transitions, 5241 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 20:00:11,116 INFO L231 Difference]: Finished difference. Result has 373 places, 339 transitions, 4781 flow [2024-06-03 20:00:11,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4497, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4781, PETRI_PLACES=373, PETRI_TRANSITIONS=339} [2024-06-03 20:00:11,116 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-03 20:00:11,116 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 339 transitions, 4781 flow [2024-06-03 20:00:11,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:11,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:11,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:11,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-03 20:00:11,117 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:11,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:11,117 INFO L85 PathProgramCache]: Analyzing trace with hash -205832380, now seen corresponding path program 13 times [2024-06-03 20:00:11,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:11,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963976092] [2024-06-03 20:00:11,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:11,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:12,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963976092] [2024-06-03 20:00:12,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963976092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:12,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:12,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:12,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474220169] [2024-06-03 20:00:12,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:12,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:12,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:12,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:12,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:12,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:12,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 339 transitions, 4781 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:12,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:12,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:12,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:12,757 INFO L124 PetriNetUnfolderBase]: 873/1579 cut-off events. [2024-06-03 20:00:12,757 INFO L125 PetriNetUnfolderBase]: For 145804/145804 co-relation queries the response was YES. [2024-06-03 20:00:12,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11310 conditions, 1579 events. 873/1579 cut-off events. For 145804/145804 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9077 event pairs, 155 based on Foata normal form. 2/1581 useless extension candidates. Maximal degree in co-relation 11162. Up to 1228 conditions per place. [2024-06-03 20:00:12,773 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 100 changer transitions 0/356 dead transitions. [2024-06-03 20:00:12,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 356 transitions, 5553 flow [2024-06-03 20:00:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 20:00:12,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 20:00:12,773 INFO L175 Difference]: Start difference. First operand has 373 places, 339 transitions, 4781 flow. Second operand 10 states and 118 transitions. [2024-06-03 20:00:12,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 356 transitions, 5553 flow [2024-06-03 20:00:13,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 356 transitions, 5295 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:00:13,447 INFO L231 Difference]: Finished difference. Result has 373 places, 341 transitions, 4757 flow [2024-06-03 20:00:13,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4523, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4757, PETRI_PLACES=373, PETRI_TRANSITIONS=341} [2024-06-03 20:00:13,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-03 20:00:13,447 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 341 transitions, 4757 flow [2024-06-03 20:00:13,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:13,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:13,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:13,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-03 20:00:13,448 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:13,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:13,448 INFO L85 PathProgramCache]: Analyzing trace with hash -206010196, now seen corresponding path program 24 times [2024-06-03 20:00:13,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:13,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903558174] [2024-06-03 20:00:13,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:13,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:14,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:14,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:14,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903558174] [2024-06-03 20:00:14,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903558174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:14,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:14,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:14,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966040941] [2024-06-03 20:00:14,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:14,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:14,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:14,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:14,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:14,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:14,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 341 transitions, 4757 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:14,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:14,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:14,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:14,943 INFO L124 PetriNetUnfolderBase]: 877/1587 cut-off events. [2024-06-03 20:00:14,943 INFO L125 PetriNetUnfolderBase]: For 146004/146004 co-relation queries the response was YES. [2024-06-03 20:00:14,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11336 conditions, 1587 events. 877/1587 cut-off events. For 146004/146004 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9140 event pairs, 159 based on Foata normal form. 2/1589 useless extension candidates. Maximal degree in co-relation 11188. Up to 1336 conditions per place. [2024-06-03 20:00:14,959 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 272 selfloop transitions, 82 changer transitions 0/356 dead transitions. [2024-06-03 20:00:14,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 356 transitions, 5723 flow [2024-06-03 20:00:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:14,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 20:00:14,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-03 20:00:14,959 INFO L175 Difference]: Start difference. First operand has 373 places, 341 transitions, 4757 flow. Second operand 10 states and 114 transitions. [2024-06-03 20:00:14,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 356 transitions, 5723 flow [2024-06-03 20:00:15,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 356 transitions, 5512 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 20:00:15,593 INFO L231 Difference]: Finished difference. Result has 374 places, 342 transitions, 4738 flow [2024-06-03 20:00:15,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4548, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4738, PETRI_PLACES=374, PETRI_TRANSITIONS=342} [2024-06-03 20:00:15,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-03 20:00:15,593 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 342 transitions, 4738 flow [2024-06-03 20:00:15,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:15,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:15,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:15,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-03 20:00:15,594 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:15,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash -206005546, now seen corresponding path program 25 times [2024-06-03 20:00:15,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:15,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136736924] [2024-06-03 20:00:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:15,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:16,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:16,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136736924] [2024-06-03 20:00:16,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136736924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:16,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:16,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:16,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874666034] [2024-06-03 20:00:16,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:16,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:16,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:16,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:16,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:16,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:16,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 342 transitions, 4738 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:16,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:16,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:16,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:17,190 INFO L124 PetriNetUnfolderBase]: 874/1582 cut-off events. [2024-06-03 20:00:17,191 INFO L125 PetriNetUnfolderBase]: For 135172/135172 co-relation queries the response was YES. [2024-06-03 20:00:17,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11032 conditions, 1582 events. 874/1582 cut-off events. For 135172/135172 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9146 event pairs, 160 based on Foata normal form. 2/1584 useless extension candidates. Maximal degree in co-relation 10884. Up to 1386 conditions per place. [2024-06-03 20:00:17,208 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 276 selfloop transitions, 76 changer transitions 0/354 dead transitions. [2024-06-03 20:00:17,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 354 transitions, 5470 flow [2024-06-03 20:00:17,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:17,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 20:00:17,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-03 20:00:17,209 INFO L175 Difference]: Start difference. First operand has 374 places, 342 transitions, 4738 flow. Second operand 10 states and 111 transitions. [2024-06-03 20:00:17,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 354 transitions, 5470 flow [2024-06-03 20:00:17,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 354 transitions, 5265 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-03 20:00:17,762 INFO L231 Difference]: Finished difference. Result has 375 places, 342 transitions, 4691 flow [2024-06-03 20:00:17,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4533, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4691, PETRI_PLACES=375, PETRI_TRANSITIONS=342} [2024-06-03 20:00:17,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-03 20:00:17,762 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 342 transitions, 4691 flow [2024-06-03 20:00:17,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:17,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:17,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:17,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-03 20:00:17,763 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:17,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:17,763 INFO L85 PathProgramCache]: Analyzing trace with hash -206005360, now seen corresponding path program 14 times [2024-06-03 20:00:17,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:17,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661565889] [2024-06-03 20:00:17,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:17,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:18,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:18,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661565889] [2024-06-03 20:00:18,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661565889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:18,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:18,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:18,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429613072] [2024-06-03 20:00:18,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:18,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:18,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:18,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:18,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 342 transitions, 4691 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:18,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:18,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:18,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:19,320 INFO L124 PetriNetUnfolderBase]: 870/1576 cut-off events. [2024-06-03 20:00:19,320 INFO L125 PetriNetUnfolderBase]: For 124042/124042 co-relation queries the response was YES. [2024-06-03 20:00:19,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10721 conditions, 1576 events. 870/1576 cut-off events. For 124042/124042 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9116 event pairs, 153 based on Foata normal form. 2/1578 useless extension candidates. Maximal degree in co-relation 10573. Up to 1195 conditions per place. [2024-06-03 20:00:19,338 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 109 changer transitions 0/356 dead transitions. [2024-06-03 20:00:19,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 356 transitions, 5439 flow [2024-06-03 20:00:19,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:19,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-03 20:00:19,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-03 20:00:19,339 INFO L175 Difference]: Start difference. First operand has 375 places, 342 transitions, 4691 flow. Second operand 9 states and 112 transitions. [2024-06-03 20:00:19,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 356 transitions, 5439 flow [2024-06-03 20:00:19,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 356 transitions, 5281 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 20:00:19,848 INFO L231 Difference]: Finished difference. Result has 375 places, 342 transitions, 4759 flow [2024-06-03 20:00:19,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4533, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4759, PETRI_PLACES=375, PETRI_TRANSITIONS=342} [2024-06-03 20:00:19,849 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-03 20:00:19,849 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 342 transitions, 4759 flow [2024-06-03 20:00:19,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:19,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:19,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:19,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-03 20:00:19,849 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:19,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:19,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1084929492, now seen corresponding path program 26 times [2024-06-03 20:00:19,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:19,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143863317] [2024-06-03 20:00:19,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:19,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:20,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:20,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143863317] [2024-06-03 20:00:20,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143863317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:20,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:20,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:20,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348932628] [2024-06-03 20:00:20,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:20,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:20,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:20,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:20,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:20,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:20,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 342 transitions, 4759 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:20,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:20,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:20,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:21,344 INFO L124 PetriNetUnfolderBase]: 874/1584 cut-off events. [2024-06-03 20:00:21,344 INFO L125 PetriNetUnfolderBase]: For 124345/124345 co-relation queries the response was YES. [2024-06-03 20:00:21,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10869 conditions, 1584 events. 874/1584 cut-off events. For 124345/124345 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9155 event pairs, 73 based on Foata normal form. 2/1586 useless extension candidates. Maximal degree in co-relation 10721. Up to 1114 conditions per place. [2024-06-03 20:00:21,362 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 234 selfloop transitions, 126 changer transitions 0/362 dead transitions. [2024-06-03 20:00:21,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 362 transitions, 5747 flow [2024-06-03 20:00:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 20:00:21,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-03 20:00:21,363 INFO L175 Difference]: Start difference. First operand has 375 places, 342 transitions, 4759 flow. Second operand 10 states and 121 transitions. [2024-06-03 20:00:21,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 362 transitions, 5747 flow [2024-06-03 20:00:21,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 362 transitions, 5472 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 20:00:21,869 INFO L231 Difference]: Finished difference. Result has 376 places, 343 transitions, 4760 flow [2024-06-03 20:00:21,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4486, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4760, PETRI_PLACES=376, PETRI_TRANSITIONS=343} [2024-06-03 20:00:21,869 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-03 20:00:21,869 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 343 transitions, 4760 flow [2024-06-03 20:00:21,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:21,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:21,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:21,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-03 20:00:21,870 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:21,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:21,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1084814172, now seen corresponding path program 27 times [2024-06-03 20:00:21,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:21,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905690120] [2024-06-03 20:00:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:21,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:22,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:22,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905690120] [2024-06-03 20:00:22,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905690120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:22,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:22,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:22,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586202512] [2024-06-03 20:00:22,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:22,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:22,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:22,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:22,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:22,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:22,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 343 transitions, 4760 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:22,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:22,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:22,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:23,376 INFO L124 PetriNetUnfolderBase]: 885/1605 cut-off events. [2024-06-03 20:00:23,377 INFO L125 PetriNetUnfolderBase]: For 135015/135015 co-relation queries the response was YES. [2024-06-03 20:00:23,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11179 conditions, 1605 events. 885/1605 cut-off events. For 135015/135015 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9345 event pairs, 126 based on Foata normal form. 2/1607 useless extension candidates. Maximal degree in co-relation 11031. Up to 1308 conditions per place. [2024-06-03 20:00:23,394 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 246 selfloop transitions, 115 changer transitions 0/363 dead transitions. [2024-06-03 20:00:23,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 363 transitions, 5768 flow [2024-06-03 20:00:23,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 20:00:23,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-03 20:00:23,394 INFO L175 Difference]: Start difference. First operand has 376 places, 343 transitions, 4760 flow. Second operand 10 states and 121 transitions. [2024-06-03 20:00:23,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 363 transitions, 5768 flow [2024-06-03 20:00:24,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 363 transitions, 5442 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-03 20:00:24,012 INFO L231 Difference]: Finished difference. Result has 377 places, 345 transitions, 4710 flow [2024-06-03 20:00:24,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4444, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4710, PETRI_PLACES=377, PETRI_TRANSITIONS=345} [2024-06-03 20:00:24,012 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-03 20:00:24,012 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 345 transitions, 4710 flow [2024-06-03 20:00:24,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:24,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:24,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:24,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-03 20:00:24,013 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:24,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:24,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1084809522, now seen corresponding path program 28 times [2024-06-03 20:00:24,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:24,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360255000] [2024-06-03 20:00:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:24,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:24,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:24,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360255000] [2024-06-03 20:00:24,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360255000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:24,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:24,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:24,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873363522] [2024-06-03 20:00:24,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:24,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:24,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:24,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:24,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:24,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:24,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 345 transitions, 4710 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:24,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:24,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:24,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:25,289 INFO L124 PetriNetUnfolderBase]: 882/1600 cut-off events. [2024-06-03 20:00:25,289 INFO L125 PetriNetUnfolderBase]: For 124242/124242 co-relation queries the response was YES. [2024-06-03 20:00:25,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10677 conditions, 1600 events. 882/1600 cut-off events. For 124242/124242 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9304 event pairs, 141 based on Foata normal form. 2/1602 useless extension candidates. Maximal degree in co-relation 10530. Up to 1273 conditions per place. [2024-06-03 20:00:25,303 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 233 selfloop transitions, 123 changer transitions 0/358 dead transitions. [2024-06-03 20:00:25,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 358 transitions, 5454 flow [2024-06-03 20:00:25,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 20:00:25,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:00:25,304 INFO L175 Difference]: Start difference. First operand has 377 places, 345 transitions, 4710 flow. Second operand 9 states and 108 transitions. [2024-06-03 20:00:25,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 358 transitions, 5454 flow [2024-06-03 20:00:25,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 358 transitions, 5228 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 20:00:25,890 INFO L231 Difference]: Finished difference. Result has 379 places, 345 transitions, 4736 flow [2024-06-03 20:00:25,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4484, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4736, PETRI_PLACES=379, PETRI_TRANSITIONS=345} [2024-06-03 20:00:25,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-03 20:00:25,890 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 345 transitions, 4736 flow [2024-06-03 20:00:25,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:25,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:25,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:25,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-03 20:00:25,891 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:25,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash -580552986, now seen corresponding path program 15 times [2024-06-03 20:00:25,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:25,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281007955] [2024-06-03 20:00:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:25,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:26,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:26,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281007955] [2024-06-03 20:00:26,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281007955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:26,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:26,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:26,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832848612] [2024-06-03 20:00:26,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:26,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:26,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:26,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:26,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:26,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:26,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 345 transitions, 4736 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:26,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:26,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:26,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:27,352 INFO L124 PetriNetUnfolderBase]: 878/1594 cut-off events. [2024-06-03 20:00:27,352 INFO L125 PetriNetUnfolderBase]: For 113478/113478 co-relation queries the response was YES. [2024-06-03 20:00:27,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10553 conditions, 1594 events. 878/1594 cut-off events. For 113478/113478 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9265 event pairs, 144 based on Foata normal form. 2/1596 useless extension candidates. Maximal degree in co-relation 10405. Up to 935 conditions per place. [2024-06-03 20:00:27,367 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 200 selfloop transitions, 159 changer transitions 0/361 dead transitions. [2024-06-03 20:00:27,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 361 transitions, 5704 flow [2024-06-03 20:00:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-03 20:00:27,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 20:00:27,368 INFO L175 Difference]: Start difference. First operand has 379 places, 345 transitions, 4736 flow. Second operand 9 states and 117 transitions. [2024-06-03 20:00:27,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 361 transitions, 5704 flow [2024-06-03 20:00:27,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 361 transitions, 5450 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-03 20:00:27,874 INFO L231 Difference]: Finished difference. Result has 380 places, 345 transitions, 4814 flow [2024-06-03 20:00:27,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4814, PETRI_PLACES=380, PETRI_TRANSITIONS=345} [2024-06-03 20:00:27,874 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-03 20:00:27,874 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 345 transitions, 4814 flow [2024-06-03 20:00:27,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:27,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:27,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:27,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-03 20:00:27,875 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:27,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:27,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1080345522, now seen corresponding path program 29 times [2024-06-03 20:00:27,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:27,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829867970] [2024-06-03 20:00:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:27,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:28,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:28,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829867970] [2024-06-03 20:00:28,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829867970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:28,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:28,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:28,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444474] [2024-06-03 20:00:28,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:28,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:28,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:28,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:28,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:28,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:28,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 345 transitions, 4814 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:28,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:28,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:28,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:29,192 INFO L124 PetriNetUnfolderBase]: 882/1602 cut-off events. [2024-06-03 20:00:29,193 INFO L125 PetriNetUnfolderBase]: For 115807/115807 co-relation queries the response was YES. [2024-06-03 20:00:29,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10751 conditions, 1602 events. 882/1602 cut-off events. For 115807/115807 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9323 event pairs, 72 based on Foata normal form. 2/1604 useless extension candidates. Maximal degree in co-relation 10602. Up to 1204 conditions per place. [2024-06-03 20:00:29,211 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 120 changer transitions 0/363 dead transitions. [2024-06-03 20:00:29,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 363 transitions, 5802 flow [2024-06-03 20:00:29,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:29,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 20:00:29,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-03 20:00:29,212 INFO L175 Difference]: Start difference. First operand has 380 places, 345 transitions, 4814 flow. Second operand 9 states and 113 transitions. [2024-06-03 20:00:29,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 363 transitions, 5802 flow [2024-06-03 20:00:29,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 363 transitions, 5387 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:00:29,773 INFO L231 Difference]: Finished difference. Result has 379 places, 346 transitions, 4664 flow [2024-06-03 20:00:29,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4401, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4664, PETRI_PLACES=379, PETRI_TRANSITIONS=346} [2024-06-03 20:00:29,773 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-03 20:00:29,773 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 346 transitions, 4664 flow [2024-06-03 20:00:29,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:29,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:29,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:29,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-03 20:00:29,773 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:29,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash -913927416, now seen corresponding path program 16 times [2024-06-03 20:00:29,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:29,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055752151] [2024-06-03 20:00:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:29,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:31,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055752151] [2024-06-03 20:00:31,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055752151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:31,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:31,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:31,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947644644] [2024-06-03 20:00:31,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:31,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:31,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:31,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:31,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:31,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:31,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 346 transitions, 4664 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:31,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:31,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:31,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:31,631 INFO L124 PetriNetUnfolderBase]: 888/1612 cut-off events. [2024-06-03 20:00:31,631 INFO L125 PetriNetUnfolderBase]: For 114744/114744 co-relation queries the response was YES. [2024-06-03 20:00:31,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10671 conditions, 1612 events. 888/1612 cut-off events. For 114744/114744 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9399 event pairs, 144 based on Foata normal form. 2/1614 useless extension candidates. Maximal degree in co-relation 10522. Up to 1279 conditions per place. [2024-06-03 20:00:31,649 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 269 selfloop transitions, 93 changer transitions 0/364 dead transitions. [2024-06-03 20:00:31,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 364 transitions, 5454 flow [2024-06-03 20:00:31,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 20:00:31,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-03 20:00:31,650 INFO L175 Difference]: Start difference. First operand has 379 places, 346 transitions, 4664 flow. Second operand 10 states and 119 transitions. [2024-06-03 20:00:31,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 364 transitions, 5454 flow [2024-06-03 20:00:32,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 364 transitions, 5129 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 20:00:32,154 INFO L231 Difference]: Finished difference. Result has 380 places, 348 transitions, 4557 flow [2024-06-03 20:00:32,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4339, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4557, PETRI_PLACES=380, PETRI_TRANSITIONS=348} [2024-06-03 20:00:32,155 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-03 20:00:32,155 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 348 transitions, 4557 flow [2024-06-03 20:00:32,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:32,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:32,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:32,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-03 20:00:32,155 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:32,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:32,155 INFO L85 PathProgramCache]: Analyzing trace with hash 93233022, now seen corresponding path program 17 times [2024-06-03 20:00:32,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:32,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766426655] [2024-06-03 20:00:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:32,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:33,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:33,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766426655] [2024-06-03 20:00:33,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766426655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:33,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:33,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:33,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711451064] [2024-06-03 20:00:33,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:33,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:33,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:33,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:33,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:33,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:33,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 348 transitions, 4557 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:33,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:33,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:33,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:33,863 INFO L124 PetriNetUnfolderBase]: 904/1638 cut-off events. [2024-06-03 20:00:33,863 INFO L125 PetriNetUnfolderBase]: For 125763/125763 co-relation queries the response was YES. [2024-06-03 20:00:33,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10784 conditions, 1638 events. 904/1638 cut-off events. For 125763/125763 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9562 event pairs, 145 based on Foata normal form. 2/1640 useless extension candidates. Maximal degree in co-relation 10636. Up to 1284 conditions per place. [2024-06-03 20:00:33,881 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 258 selfloop transitions, 111 changer transitions 0/371 dead transitions. [2024-06-03 20:00:33,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 371 transitions, 5605 flow [2024-06-03 20:00:33,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:33,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 20:00:33,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 20:00:33,882 INFO L175 Difference]: Start difference. First operand has 380 places, 348 transitions, 4557 flow. Second operand 10 states and 124 transitions. [2024-06-03 20:00:33,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 371 transitions, 5605 flow [2024-06-03 20:00:34,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 371 transitions, 5410 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-03 20:00:34,509 INFO L231 Difference]: Finished difference. Result has 381 places, 352 transitions, 4646 flow [2024-06-03 20:00:34,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4364, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4646, PETRI_PLACES=381, PETRI_TRANSITIONS=352} [2024-06-03 20:00:34,509 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-03 20:00:34,509 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 352 transitions, 4646 flow [2024-06-03 20:00:34,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:34,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:34,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:34,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-03 20:00:34,509 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:34,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:34,510 INFO L85 PathProgramCache]: Analyzing trace with hash 23337844, now seen corresponding path program 30 times [2024-06-03 20:00:34,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:34,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666945209] [2024-06-03 20:00:34,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:34,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:35,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:35,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666945209] [2024-06-03 20:00:35,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666945209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:35,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:35,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:35,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845267722] [2024-06-03 20:00:35,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:35,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:35,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:35,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:35,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:35,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:35,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 352 transitions, 4646 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:35,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:35,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:35,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:35,859 INFO L124 PetriNetUnfolderBase]: 908/1646 cut-off events. [2024-06-03 20:00:35,859 INFO L125 PetriNetUnfolderBase]: For 125837/125837 co-relation queries the response was YES. [2024-06-03 20:00:35,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10880 conditions, 1646 events. 908/1646 cut-off events. For 125837/125837 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9632 event pairs, 137 based on Foata normal form. 2/1648 useless extension candidates. Maximal degree in co-relation 10732. Up to 1390 conditions per place. [2024-06-03 20:00:35,877 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 256 selfloop transitions, 110 changer transitions 0/368 dead transitions. [2024-06-03 20:00:35,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 368 transitions, 5430 flow [2024-06-03 20:00:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-03 20:00:35,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-03 20:00:35,878 INFO L175 Difference]: Start difference. First operand has 381 places, 352 transitions, 4646 flow. Second operand 9 states and 110 transitions. [2024-06-03 20:00:35,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 368 transitions, 5430 flow [2024-06-03 20:00:36,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 368 transitions, 5276 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-03 20:00:36,387 INFO L231 Difference]: Finished difference. Result has 383 places, 353 transitions, 4735 flow [2024-06-03 20:00:36,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4492, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4735, PETRI_PLACES=383, PETRI_TRANSITIONS=353} [2024-06-03 20:00:36,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-03 20:00:36,388 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 353 transitions, 4735 flow [2024-06-03 20:00:36,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:36,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:36,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:36,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-03 20:00:36,388 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:36,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:36,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1080167892, now seen corresponding path program 31 times [2024-06-03 20:00:36,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:36,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506974993] [2024-06-03 20:00:36,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:36,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:37,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:37,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506974993] [2024-06-03 20:00:37,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506974993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:37,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:37,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:37,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185757813] [2024-06-03 20:00:37,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:37,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:37,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:37,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:37,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:37,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:37,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 353 transitions, 4735 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:37,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:37,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:37,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:38,037 INFO L124 PetriNetUnfolderBase]: 912/1654 cut-off events. [2024-06-03 20:00:38,037 INFO L125 PetriNetUnfolderBase]: For 125753/125753 co-relation queries the response was YES. [2024-06-03 20:00:38,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11065 conditions, 1654 events. 912/1654 cut-off events. For 125753/125753 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9692 event pairs, 147 based on Foata normal form. 2/1656 useless extension candidates. Maximal degree in co-relation 10916. Up to 1315 conditions per place. [2024-06-03 20:00:38,056 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 125 changer transitions 0/368 dead transitions. [2024-06-03 20:00:38,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 368 transitions, 5517 flow [2024-06-03 20:00:38,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:38,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 20:00:38,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-03 20:00:38,057 INFO L175 Difference]: Start difference. First operand has 383 places, 353 transitions, 4735 flow. Second operand 10 states and 116 transitions. [2024-06-03 20:00:38,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 368 transitions, 5517 flow [2024-06-03 20:00:38,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 368 transitions, 5289 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 20:00:38,633 INFO L231 Difference]: Finished difference. Result has 385 places, 354 transitions, 4785 flow [2024-06-03 20:00:38,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4507, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4785, PETRI_PLACES=385, PETRI_TRANSITIONS=354} [2024-06-03 20:00:38,633 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-03 20:00:38,633 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 354 transitions, 4785 flow [2024-06-03 20:00:38,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:38,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:38,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:38,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-03 20:00:38,633 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:38,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash -576084336, now seen corresponding path program 18 times [2024-06-03 20:00:38,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:38,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197571794] [2024-06-03 20:00:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:38,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:39,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:39,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197571794] [2024-06-03 20:00:39,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197571794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:39,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:39,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:39,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709081807] [2024-06-03 20:00:39,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:39,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:39,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:39,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:39,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:39,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:39,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 354 transitions, 4785 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:39,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:39,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:39,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:40,331 INFO L124 PetriNetUnfolderBase]: 918/1664 cut-off events. [2024-06-03 20:00:40,332 INFO L125 PetriNetUnfolderBase]: For 126092/126092 co-relation queries the response was YES. [2024-06-03 20:00:40,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11154 conditions, 1664 events. 918/1664 cut-off events. For 126092/126092 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9764 event pairs, 116 based on Foata normal form. 2/1666 useless extension candidates. Maximal degree in co-relation 11005. Up to 1127 conditions per place. [2024-06-03 20:00:40,349 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 157 changer transitions 0/375 dead transitions. [2024-06-03 20:00:40,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 375 transitions, 5821 flow [2024-06-03 20:00:40,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:40,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-03 20:00:40,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-03 20:00:40,350 INFO L175 Difference]: Start difference. First operand has 385 places, 354 transitions, 4785 flow. Second operand 9 states and 120 transitions. [2024-06-03 20:00:40,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 375 transitions, 5821 flow [2024-06-03 20:00:40,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 375 transitions, 5553 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-03 20:00:40,917 INFO L231 Difference]: Finished difference. Result has 384 places, 356 transitions, 4872 flow [2024-06-03 20:00:40,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4521, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4872, PETRI_PLACES=384, PETRI_TRANSITIONS=356} [2024-06-03 20:00:40,918 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-03 20:00:40,918 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 356 transitions, 4872 flow [2024-06-03 20:00:40,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:40,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:40,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:40,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-03 20:00:40,919 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:40,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:40,919 INFO L85 PathProgramCache]: Analyzing trace with hash -913934112, now seen corresponding path program 32 times [2024-06-03 20:00:40,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:40,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865154572] [2024-06-03 20:00:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:40,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:41,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:41,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865154572] [2024-06-03 20:00:41,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865154572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:41,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:41,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:41,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828812220] [2024-06-03 20:00:41,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:41,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:41,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:41,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:41,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:41,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 356 transitions, 4872 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:41,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:41,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:41,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:42,496 INFO L124 PetriNetUnfolderBase]: 922/1672 cut-off events. [2024-06-03 20:00:42,496 INFO L125 PetriNetUnfolderBase]: For 124033/124033 co-relation queries the response was YES. [2024-06-03 20:00:42,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11298 conditions, 1672 events. 922/1672 cut-off events. For 124033/124033 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9787 event pairs, 146 based on Foata normal form. 2/1674 useless extension candidates. Maximal degree in co-relation 11150. Up to 1345 conditions per place. [2024-06-03 20:00:42,514 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 243 selfloop transitions, 124 changer transitions 0/369 dead transitions. [2024-06-03 20:00:42,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 369 transitions, 5652 flow [2024-06-03 20:00:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 20:00:42,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-03 20:00:42,515 INFO L175 Difference]: Start difference. First operand has 384 places, 356 transitions, 4872 flow. Second operand 10 states and 111 transitions. [2024-06-03 20:00:42,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 369 transitions, 5652 flow [2024-06-03 20:00:43,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 369 transitions, 5184 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-03 20:00:43,071 INFO L231 Difference]: Finished difference. Result has 385 places, 357 transitions, 4678 flow [2024-06-03 20:00:43,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4678, PETRI_PLACES=385, PETRI_TRANSITIONS=357} [2024-06-03 20:00:43,071 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-03 20:00:43,072 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 357 transitions, 4678 flow [2024-06-03 20:00:43,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:43,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:43,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:43,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-03 20:00:43,072 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:43,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:43,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1080161196, now seen corresponding path program 19 times [2024-06-03 20:00:43,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:43,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112189704] [2024-06-03 20:00:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:43,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:44,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:44,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112189704] [2024-06-03 20:00:44,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112189704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:44,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:44,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:44,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373519278] [2024-06-03 20:00:44,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:44,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:44,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:44,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:44,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:44,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:44,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 357 transitions, 4678 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:44,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:44,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:44,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:44,862 INFO L124 PetriNetUnfolderBase]: 918/1666 cut-off events. [2024-06-03 20:00:44,862 INFO L125 PetriNetUnfolderBase]: For 112321/112321 co-relation queries the response was YES. [2024-06-03 20:00:44,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10851 conditions, 1666 events. 918/1666 cut-off events. For 112321/112321 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9803 event pairs, 145 based on Foata normal form. 2/1668 useless extension candidates. Maximal degree in co-relation 10703. Up to 1333 conditions per place. [2024-06-03 20:00:44,879 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 267 selfloop transitions, 105 changer transitions 0/374 dead transitions. [2024-06-03 20:00:44,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 374 transitions, 5470 flow [2024-06-03 20:00:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 20:00:44,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:00:44,880 INFO L175 Difference]: Start difference. First operand has 385 places, 357 transitions, 4678 flow. Second operand 10 states and 120 transitions. [2024-06-03 20:00:44,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 374 transitions, 5470 flow [2024-06-03 20:00:45,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 374 transitions, 5202 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-03 20:00:45,432 INFO L231 Difference]: Finished difference. Result has 386 places, 357 transitions, 4628 flow [2024-06-03 20:00:45,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4410, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4628, PETRI_PLACES=386, PETRI_TRANSITIONS=357} [2024-06-03 20:00:45,433 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 355 predicate places. [2024-06-03 20:00:45,433 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 357 transitions, 4628 flow [2024-06-03 20:00:45,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:45,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:45,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:45,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-03 20:00:45,433 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:45,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:45,434 INFO L85 PathProgramCache]: Analyzing trace with hash 189744790, now seen corresponding path program 20 times [2024-06-03 20:00:45,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:45,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453249202] [2024-06-03 20:00:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:45,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:46,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:46,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453249202] [2024-06-03 20:00:46,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453249202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:46,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:46,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:46,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913653359] [2024-06-03 20:00:46,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:46,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:46,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:46,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:46,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:46,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:46,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 357 transitions, 4628 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:46,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:46,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:46,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:47,191 INFO L124 PetriNetUnfolderBase]: 924/1676 cut-off events. [2024-06-03 20:00:47,192 INFO L125 PetriNetUnfolderBase]: For 112247/112247 co-relation queries the response was YES. [2024-06-03 20:00:47,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10880 conditions, 1676 events. 924/1676 cut-off events. For 112247/112247 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9886 event pairs, 144 based on Foata normal form. 2/1678 useless extension candidates. Maximal degree in co-relation 10732. Up to 1325 conditions per place. [2024-06-03 20:00:47,205 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 275 selfloop transitions, 99 changer transitions 0/376 dead transitions. [2024-06-03 20:00:47,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 376 transitions, 5450 flow [2024-06-03 20:00:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-03 20:00:47,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-03 20:00:47,213 INFO L175 Difference]: Start difference. First operand has 386 places, 357 transitions, 4628 flow. Second operand 10 states and 122 transitions. [2024-06-03 20:00:47,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 376 transitions, 5450 flow [2024-06-03 20:00:47,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 376 transitions, 5227 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:00:47,789 INFO L231 Difference]: Finished difference. Result has 386 places, 359 transitions, 4639 flow [2024-06-03 20:00:47,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4405, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4639, PETRI_PLACES=386, PETRI_TRANSITIONS=359} [2024-06-03 20:00:47,789 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 355 predicate places. [2024-06-03 20:00:47,789 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 359 transitions, 4639 flow [2024-06-03 20:00:47,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:47,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:47,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:47,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-03 20:00:47,790 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:47,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:47,790 INFO L85 PathProgramCache]: Analyzing trace with hash 196007410, now seen corresponding path program 21 times [2024-06-03 20:00:47,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:47,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95022788] [2024-06-03 20:00:47,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:47,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:49,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:49,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95022788] [2024-06-03 20:00:49,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95022788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:49,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:49,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:49,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424565760] [2024-06-03 20:00:49,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:49,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:49,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:49,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:49,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:49,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:49,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 359 transitions, 4639 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:49,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:49,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:49,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:49,955 INFO L124 PetriNetUnfolderBase]: 930/1686 cut-off events. [2024-06-03 20:00:49,955 INFO L125 PetriNetUnfolderBase]: For 112487/112487 co-relation queries the response was YES. [2024-06-03 20:00:49,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10929 conditions, 1686 events. 930/1686 cut-off events. For 112487/112487 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9922 event pairs, 147 based on Foata normal form. 2/1688 useless extension candidates. Maximal degree in co-relation 10781. Up to 1353 conditions per place. [2024-06-03 20:00:49,973 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 280 selfloop transitions, 95 changer transitions 0/377 dead transitions. [2024-06-03 20:00:49,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 377 transitions, 5463 flow [2024-06-03 20:00:49,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 20:00:49,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 20:00:49,975 INFO L175 Difference]: Start difference. First operand has 386 places, 359 transitions, 4639 flow. Second operand 10 states and 118 transitions. [2024-06-03 20:00:49,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 377 transitions, 5463 flow [2024-06-03 20:00:50,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 377 transitions, 5252 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 20:00:50,532 INFO L231 Difference]: Finished difference. Result has 387 places, 361 transitions, 4658 flow [2024-06-03 20:00:50,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4428, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4658, PETRI_PLACES=387, PETRI_TRANSITIONS=361} [2024-06-03 20:00:50,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-03 20:00:50,533 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 361 transitions, 4658 flow [2024-06-03 20:00:50,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:50,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:50,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:50,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-03 20:00:50,533 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:50,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:50,534 INFO L85 PathProgramCache]: Analyzing trace with hash 196000714, now seen corresponding path program 33 times [2024-06-03 20:00:50,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:50,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910787893] [2024-06-03 20:00:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:50,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:51,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:51,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910787893] [2024-06-03 20:00:51,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910787893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:51,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:51,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:51,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153280895] [2024-06-03 20:00:51,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:51,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:51,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:51,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:51,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:51,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:51,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 361 transitions, 4658 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:51,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:51,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:51,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:52,153 INFO L124 PetriNetUnfolderBase]: 934/1694 cut-off events. [2024-06-03 20:00:52,153 INFO L125 PetriNetUnfolderBase]: For 112457/112457 co-relation queries the response was YES. [2024-06-03 20:00:52,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10966 conditions, 1694 events. 934/1694 cut-off events. For 112457/112457 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9996 event pairs, 167 based on Foata normal form. 2/1696 useless extension candidates. Maximal degree in co-relation 10818. Up to 1516 conditions per place. [2024-06-03 20:00:52,171 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 305 selfloop transitions, 67 changer transitions 0/374 dead transitions. [2024-06-03 20:00:52,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 374 transitions, 5450 flow [2024-06-03 20:00:52,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 20:00:52,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-03 20:00:52,171 INFO L175 Difference]: Start difference. First operand has 387 places, 361 transitions, 4658 flow. Second operand 10 states and 108 transitions. [2024-06-03 20:00:52,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 374 transitions, 5450 flow [2024-06-03 20:00:52,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 374 transitions, 5243 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-03 20:00:52,766 INFO L231 Difference]: Finished difference. Result has 388 places, 362 transitions, 4613 flow [2024-06-03 20:00:52,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4451, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4613, PETRI_PLACES=388, PETRI_TRANSITIONS=362} [2024-06-03 20:00:52,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-03 20:00:52,767 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 362 transitions, 4613 flow [2024-06-03 20:00:52,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:52,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:52,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:52,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-03 20:00:52,767 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:52,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:52,767 INFO L85 PathProgramCache]: Analyzing trace with hash 196246978, now seen corresponding path program 2 times [2024-06-03 20:00:52,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:52,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976537723] [2024-06-03 20:00:52,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:52,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:54,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:54,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976537723] [2024-06-03 20:00:54,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976537723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:54,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:54,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:00:54,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301460874] [2024-06-03 20:00:54,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:54,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:00:54,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:54,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:00:54,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:00:54,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:54,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 362 transitions, 4613 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:54,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:54,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:54,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:54,943 INFO L124 PetriNetUnfolderBase]: 942/1710 cut-off events. [2024-06-03 20:00:54,944 INFO L125 PetriNetUnfolderBase]: For 123349/123349 co-relation queries the response was YES. [2024-06-03 20:00:54,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10972 conditions, 1710 events. 942/1710 cut-off events. For 123349/123349 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10126 event pairs, 156 based on Foata normal form. 4/1714 useless extension candidates. Maximal degree in co-relation 10824. Up to 1369 conditions per place. [2024-06-03 20:00:54,959 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 282 selfloop transitions, 94 changer transitions 0/378 dead transitions. [2024-06-03 20:00:54,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 378 transitions, 5445 flow [2024-06-03 20:00:54,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 20:00:54,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-03 20:00:54,960 INFO L175 Difference]: Start difference. First operand has 388 places, 362 transitions, 4613 flow. Second operand 10 states and 116 transitions. [2024-06-03 20:00:54,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 378 transitions, 5445 flow [2024-06-03 20:00:55,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 378 transitions, 5297 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 20:00:55,494 INFO L231 Difference]: Finished difference. Result has 389 places, 364 transitions, 4709 flow [2024-06-03 20:00:55,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4465, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4709, PETRI_PLACES=389, PETRI_TRANSITIONS=364} [2024-06-03 20:00:55,494 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-03 20:00:55,494 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 364 transitions, 4709 flow [2024-06-03 20:00:55,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:55,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:55,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:55,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-03 20:00:55,494 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:55,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:55,495 INFO L85 PathProgramCache]: Analyzing trace with hash 196000900, now seen corresponding path program 22 times [2024-06-03 20:00:55,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:55,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414600638] [2024-06-03 20:00:55,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:55,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:56,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:56,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414600638] [2024-06-03 20:00:56,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414600638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:56,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:56,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059903575] [2024-06-03 20:00:56,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:56,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:56,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:56,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:56,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:56,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 364 transitions, 4709 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:56,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:56,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:56,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:57,313 INFO L124 PetriNetUnfolderBase]: 958/1736 cut-off events. [2024-06-03 20:00:57,313 INFO L125 PetriNetUnfolderBase]: For 123617/123617 co-relation queries the response was YES. [2024-06-03 20:00:57,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11433 conditions, 1736 events. 958/1736 cut-off events. For 123617/123617 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10286 event pairs, 144 based on Foata normal form. 2/1738 useless extension candidates. Maximal degree in co-relation 11285. Up to 1366 conditions per place. [2024-06-03 20:00:57,331 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 278 selfloop transitions, 105 changer transitions 0/385 dead transitions. [2024-06-03 20:00:57,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 385 transitions, 5793 flow [2024-06-03 20:00:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:57,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 20:00:57,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:00:57,332 INFO L175 Difference]: Start difference. First operand has 389 places, 364 transitions, 4709 flow. Second operand 10 states and 120 transitions. [2024-06-03 20:00:57,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 385 transitions, 5793 flow [2024-06-03 20:00:57,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 385 transitions, 5567 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-03 20:00:57,881 INFO L231 Difference]: Finished difference. Result has 391 places, 368 transitions, 4771 flow [2024-06-03 20:00:57,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4485, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4771, PETRI_PLACES=391, PETRI_TRANSITIONS=368} [2024-06-03 20:00:57,881 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-03 20:00:57,881 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 368 transitions, 4771 flow [2024-06-03 20:00:57,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:57,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:57,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:57,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-03 20:00:57,882 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:57,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:57,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1903412010, now seen corresponding path program 23 times [2024-06-03 20:00:57,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:57,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752804397] [2024-06-03 20:00:57,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:57,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:59,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:59,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:59,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752804397] [2024-06-03 20:00:59,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752804397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:59,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:59,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:00:59,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426207937] [2024-06-03 20:00:59,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:59,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:00:59,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:59,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:00:59,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:00:59,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:00:59,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 368 transitions, 4771 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:59,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:59,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:00:59,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:59,969 INFO L124 PetriNetUnfolderBase]: 954/1730 cut-off events. [2024-06-03 20:00:59,969 INFO L125 PetriNetUnfolderBase]: For 112540/112540 co-relation queries the response was YES. [2024-06-03 20:00:59,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11164 conditions, 1730 events. 954/1730 cut-off events. For 112540/112540 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10282 event pairs, 144 based on Foata normal form. 2/1732 useless extension candidates. Maximal degree in co-relation 11015. Up to 1397 conditions per place. [2024-06-03 20:00:59,989 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 282 selfloop transitions, 99 changer transitions 0/383 dead transitions. [2024-06-03 20:00:59,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 383 transitions, 5575 flow [2024-06-03 20:00:59,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:59,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:59,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 20:00:59,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-03 20:00:59,990 INFO L175 Difference]: Start difference. First operand has 391 places, 368 transitions, 4771 flow. Second operand 10 states and 116 transitions. [2024-06-03 20:00:59,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 383 transitions, 5575 flow [2024-06-03 20:01:00,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 383 transitions, 5417 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:00,528 INFO L231 Difference]: Finished difference. Result has 394 places, 368 transitions, 4819 flow [2024-06-03 20:01:00,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4613, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4819, PETRI_PLACES=394, PETRI_TRANSITIONS=368} [2024-06-03 20:01:00,529 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-03 20:01:00,529 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 368 transitions, 4819 flow [2024-06-03 20:01:00,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:00,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:00,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:00,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-03 20:01:00,529 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:00,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:00,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1226165502, now seen corresponding path program 3 times [2024-06-03 20:01:00,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:00,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598581202] [2024-06-03 20:01:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:00,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:01,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:01,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598581202] [2024-06-03 20:01:01,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598581202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:01,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:01,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:01,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155133477] [2024-06-03 20:01:01,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:01,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:01,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:01,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:01,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:01,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 368 transitions, 4819 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:01,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:01,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:01,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:02,212 INFO L124 PetriNetUnfolderBase]: 958/1738 cut-off events. [2024-06-03 20:01:02,213 INFO L125 PetriNetUnfolderBase]: For 112630/112630 co-relation queries the response was YES. [2024-06-03 20:01:02,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11364 conditions, 1738 events. 958/1738 cut-off events. For 112630/112630 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 10315 event pairs, 299 based on Foata normal form. 2/1740 useless extension candidates. Maximal degree in co-relation 11214. Up to 1691 conditions per place. [2024-06-03 20:01:02,232 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 358 selfloop transitions, 20 changer transitions 0/380 dead transitions. [2024-06-03 20:01:02,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 380 transitions, 5623 flow [2024-06-03 20:01:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-03 20:01:02,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-03 20:01:02,233 INFO L175 Difference]: Start difference. First operand has 394 places, 368 transitions, 4819 flow. Second operand 10 states and 100 transitions. [2024-06-03 20:01:02,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 380 transitions, 5623 flow [2024-06-03 20:01:02,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 380 transitions, 5402 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:02,856 INFO L231 Difference]: Finished difference. Result has 394 places, 369 transitions, 4666 flow [2024-06-03 20:01:02,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4598, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4666, PETRI_PLACES=394, PETRI_TRANSITIONS=369} [2024-06-03 20:01:02,857 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-03 20:01:02,857 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 369 transitions, 4666 flow [2024-06-03 20:01:02,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:02,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:02,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:02,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-03 20:01:02,858 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:02,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:02,858 INFO L85 PathProgramCache]: Analyzing trace with hash 968289872, now seen corresponding path program 4 times [2024-06-03 20:01:02,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:02,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019506522] [2024-06-03 20:01:02,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:04,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:04,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019506522] [2024-06-03 20:01:04,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019506522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:04,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:04,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:04,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431921361] [2024-06-03 20:01:04,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:04,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:04,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:04,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:04,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:04,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:04,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 369 transitions, 4666 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:04,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:04,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:04,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:04,604 INFO L124 PetriNetUnfolderBase]: 962/1746 cut-off events. [2024-06-03 20:01:04,604 INFO L125 PetriNetUnfolderBase]: For 112607/112607 co-relation queries the response was YES. [2024-06-03 20:01:04,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11187 conditions, 1746 events. 962/1746 cut-off events. For 112607/112607 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10401 event pairs, 302 based on Foata normal form. 2/1748 useless extension candidates. Maximal degree in co-relation 11037. Up to 1700 conditions per place. [2024-06-03 20:01:04,622 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 360 selfloop transitions, 19 changer transitions 0/381 dead transitions. [2024-06-03 20:01:04,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 381 transitions, 5474 flow [2024-06-03 20:01:04,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-03 20:01:04,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-03 20:01:04,623 INFO L175 Difference]: Start difference. First operand has 394 places, 369 transitions, 4666 flow. Second operand 10 states and 98 transitions. [2024-06-03 20:01:04,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 381 transitions, 5474 flow [2024-06-03 20:01:05,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 381 transitions, 5416 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:05,140 INFO L231 Difference]: Finished difference. Result has 396 places, 370 transitions, 4677 flow [2024-06-03 20:01:05,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4608, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4677, PETRI_PLACES=396, PETRI_TRANSITIONS=370} [2024-06-03 20:01:05,141 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-03 20:01:05,141 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 370 transitions, 4677 flow [2024-06-03 20:01:05,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:05,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:05,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:05,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-03 20:01:05,141 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:05,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:05,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2116394346, now seen corresponding path program 34 times [2024-06-03 20:01:05,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:05,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862917185] [2024-06-03 20:01:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:05,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:06,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:06,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:06,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862917185] [2024-06-03 20:01:06,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862917185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:06,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:06,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:06,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497177735] [2024-06-03 20:01:06,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:06,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:06,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:06,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:06,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:06,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:06,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 370 transitions, 4677 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:06,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:06,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:06,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:06,716 INFO L124 PetriNetUnfolderBase]: 966/1754 cut-off events. [2024-06-03 20:01:06,716 INFO L125 PetriNetUnfolderBase]: For 114440/114440 co-relation queries the response was YES. [2024-06-03 20:01:06,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11228 conditions, 1754 events. 966/1754 cut-off events. For 114440/114440 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 10451 event pairs, 304 based on Foata normal form. 2/1756 useless extension candidates. Maximal degree in co-relation 11077. Up to 1701 conditions per place. [2024-06-03 20:01:06,735 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 355 selfloop transitions, 24 changer transitions 0/381 dead transitions. [2024-06-03 20:01:06,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 381 transitions, 5479 flow [2024-06-03 20:01:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-03 20:01:06,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-03 20:01:06,736 INFO L175 Difference]: Start difference. First operand has 396 places, 370 transitions, 4677 flow. Second operand 10 states and 101 transitions. [2024-06-03 20:01:06,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 381 transitions, 5479 flow [2024-06-03 20:01:07,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 381 transitions, 5422 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:07,267 INFO L231 Difference]: Finished difference. Result has 398 places, 371 transitions, 4696 flow [2024-06-03 20:01:07,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4620, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4696, PETRI_PLACES=398, PETRI_TRANSITIONS=371} [2024-06-03 20:01:07,267 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-03 20:01:07,267 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 371 transitions, 4696 flow [2024-06-03 20:01:07,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:07,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:07,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:07,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-03 20:01:07,268 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:07,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:07,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1579185884, now seen corresponding path program 5 times [2024-06-03 20:01:07,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:07,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184164227] [2024-06-03 20:01:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:07,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:08,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:08,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184164227] [2024-06-03 20:01:08,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184164227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:08,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:08,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:08,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117398386] [2024-06-03 20:01:08,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:08,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:08,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:08,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:08,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:08,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:08,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 371 transitions, 4696 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:08,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:08,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:08,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:09,234 INFO L124 PetriNetUnfolderBase]: 970/1762 cut-off events. [2024-06-03 20:01:09,234 INFO L125 PetriNetUnfolderBase]: For 116601/116601 co-relation queries the response was YES. [2024-06-03 20:01:09,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11289 conditions, 1762 events. 970/1762 cut-off events. For 116601/116601 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10506 event pairs, 301 based on Foata normal form. 2/1764 useless extension candidates. Maximal degree in co-relation 11137. Up to 1719 conditions per place. [2024-06-03 20:01:09,253 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 365 selfloop transitions, 16 changer transitions 0/383 dead transitions. [2024-06-03 20:01:09,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 383 transitions, 5508 flow [2024-06-03 20:01:09,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:09,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:09,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-03 20:01:09,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-03 20:01:09,254 INFO L175 Difference]: Start difference. First operand has 398 places, 371 transitions, 4696 flow. Second operand 10 states and 96 transitions. [2024-06-03 20:01:09,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 383 transitions, 5508 flow [2024-06-03 20:01:09,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 383 transitions, 5444 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:09,817 INFO L231 Difference]: Finished difference. Result has 400 places, 372 transitions, 4696 flow [2024-06-03 20:01:09,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4632, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4696, PETRI_PLACES=400, PETRI_TRANSITIONS=372} [2024-06-03 20:01:09,817 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-03 20:01:09,817 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 372 transitions, 4696 flow [2024-06-03 20:01:09,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:09,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:09,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:09,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-03 20:01:09,818 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:09,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:09,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1351647430, now seen corresponding path program 6 times [2024-06-03 20:01:09,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:09,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556532820] [2024-06-03 20:01:09,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:09,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:11,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:11,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556532820] [2024-06-03 20:01:11,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556532820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:11,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:11,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:11,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068522074] [2024-06-03 20:01:11,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:11,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:11,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:11,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:11,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:11,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:11,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 372 transitions, 4696 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:11,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:11,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:11,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:11,894 INFO L124 PetriNetUnfolderBase]: 974/1770 cut-off events. [2024-06-03 20:01:11,894 INFO L125 PetriNetUnfolderBase]: For 118960/118960 co-relation queries the response was YES. [2024-06-03 20:01:11,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11338 conditions, 1770 events. 974/1770 cut-off events. For 118960/118960 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 10546 event pairs, 302 based on Foata normal form. 2/1772 useless extension candidates. Maximal degree in co-relation 11185. Up to 1690 conditions per place. [2024-06-03 20:01:11,911 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 352 selfloop transitions, 31 changer transitions 0/385 dead transitions. [2024-06-03 20:01:11,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 385 transitions, 5520 flow [2024-06-03 20:01:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:11,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 20:01:11,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 20:01:11,912 INFO L175 Difference]: Start difference. First operand has 400 places, 372 transitions, 4696 flow. Second operand 10 states and 105 transitions. [2024-06-03 20:01:11,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 385 transitions, 5520 flow [2024-06-03 20:01:12,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 385 transitions, 5466 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:12,475 INFO L231 Difference]: Finished difference. Result has 402 places, 373 transitions, 4738 flow [2024-06-03 20:01:12,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4642, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4738, PETRI_PLACES=402, PETRI_TRANSITIONS=373} [2024-06-03 20:01:12,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 371 predicate places. [2024-06-03 20:01:12,476 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 373 transitions, 4738 flow [2024-06-03 20:01:12,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:12,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:12,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:12,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-03 20:01:12,476 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:12,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:12,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1646206260, now seen corresponding path program 24 times [2024-06-03 20:01:12,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:12,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704272870] [2024-06-03 20:01:12,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:12,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:13,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:13,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704272870] [2024-06-03 20:01:13,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704272870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:13,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:13,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:13,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424346950] [2024-06-03 20:01:13,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:13,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:13,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:13,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 373 transitions, 4738 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:13,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:13,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:13,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:14,309 INFO L124 PetriNetUnfolderBase]: 980/1780 cut-off events. [2024-06-03 20:01:14,310 INFO L125 PetriNetUnfolderBase]: For 121019/121019 co-relation queries the response was YES. [2024-06-03 20:01:14,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11427 conditions, 1780 events. 980/1780 cut-off events. For 121019/121019 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10643 event pairs, 308 based on Foata normal form. 2/1782 useless extension candidates. Maximal degree in co-relation 11273. Up to 1702 conditions per place. [2024-06-03 20:01:14,329 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 355 selfloop transitions, 30 changer transitions 0/387 dead transitions. [2024-06-03 20:01:14,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 387 transitions, 5576 flow [2024-06-03 20:01:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:14,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 20:01:14,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-03 20:01:14,330 INFO L175 Difference]: Start difference. First operand has 402 places, 373 transitions, 4738 flow. Second operand 10 states and 106 transitions. [2024-06-03 20:01:14,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 387 transitions, 5576 flow [2024-06-03 20:01:14,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 387 transitions, 5490 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:14,927 INFO L231 Difference]: Finished difference. Result has 404 places, 375 transitions, 4757 flow [2024-06-03 20:01:14,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4652, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4757, PETRI_PLACES=404, PETRI_TRANSITIONS=375} [2024-06-03 20:01:14,927 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-03 20:01:14,927 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 375 transitions, 4757 flow [2024-06-03 20:01:14,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:14,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:14,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:14,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-03 20:01:14,928 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:14,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:14,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1864584284, now seen corresponding path program 7 times [2024-06-03 20:01:14,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:14,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812979745] [2024-06-03 20:01:14,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:14,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:16,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:16,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812979745] [2024-06-03 20:01:16,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812979745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:16,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:16,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:16,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095641170] [2024-06-03 20:01:16,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:16,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:16,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:16,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:16,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:16,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 375 transitions, 4757 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:16,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:16,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:16,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:16,701 INFO L124 PetriNetUnfolderBase]: 977/1775 cut-off events. [2024-06-03 20:01:16,702 INFO L125 PetriNetUnfolderBase]: For 111226/111226 co-relation queries the response was YES. [2024-06-03 20:01:16,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11155 conditions, 1775 events. 977/1775 cut-off events. For 111226/111226 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10610 event pairs, 302 based on Foata normal form. 2/1777 useless extension candidates. Maximal degree in co-relation 11000. Up to 1725 conditions per place. [2024-06-03 20:01:16,721 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 364 selfloop transitions, 21 changer transitions 0/387 dead transitions. [2024-06-03 20:01:16,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 387 transitions, 5557 flow [2024-06-03 20:01:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:16,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-03 20:01:16,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-03 20:01:16,722 INFO L175 Difference]: Start difference. First operand has 404 places, 375 transitions, 4757 flow. Second operand 10 states and 101 transitions. [2024-06-03 20:01:16,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 387 transitions, 5557 flow [2024-06-03 20:01:17,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 387 transitions, 5474 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:17,263 INFO L231 Difference]: Finished difference. Result has 406 places, 375 transitions, 4720 flow [2024-06-03 20:01:17,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4674, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4720, PETRI_PLACES=406, PETRI_TRANSITIONS=375} [2024-06-03 20:01:17,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 375 predicate places. [2024-06-03 20:01:17,263 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 375 transitions, 4720 flow [2024-06-03 20:01:17,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:17,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:17,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:17,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-03 20:01:17,263 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:17,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:17,263 INFO L85 PathProgramCache]: Analyzing trace with hash 967992644, now seen corresponding path program 25 times [2024-06-03 20:01:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:17,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801286658] [2024-06-03 20:01:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:17,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:18,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:18,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801286658] [2024-06-03 20:01:18,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801286658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:18,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:18,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:18,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635650001] [2024-06-03 20:01:18,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:18,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:18,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:18,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:18,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:18,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:18,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 375 transitions, 4720 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:18,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:18,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:18,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:18,961 INFO L124 PetriNetUnfolderBase]: 983/1785 cut-off events. [2024-06-03 20:01:18,961 INFO L125 PetriNetUnfolderBase]: For 113128/113128 co-relation queries the response was YES. [2024-06-03 20:01:18,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11192 conditions, 1785 events. 983/1785 cut-off events. For 113128/113128 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 10677 event pairs, 308 based on Foata normal form. 2/1787 useless extension candidates. Maximal degree in co-relation 11036. Up to 1729 conditions per place. [2024-06-03 20:01:18,982 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 365 selfloop transitions, 22 changer transitions 0/389 dead transitions. [2024-06-03 20:01:18,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 389 transitions, 5566 flow [2024-06-03 20:01:18,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:01:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:01:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-03 20:01:18,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-03 20:01:18,983 INFO L175 Difference]: Start difference. First operand has 406 places, 375 transitions, 4720 flow. Second operand 11 states and 107 transitions. [2024-06-03 20:01:18,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 389 transitions, 5566 flow [2024-06-03 20:01:19,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 389 transitions, 5457 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:19,582 INFO L231 Difference]: Finished difference. Result has 407 places, 377 transitions, 4704 flow [2024-06-03 20:01:19,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4611, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4704, PETRI_PLACES=407, PETRI_TRANSITIONS=377} [2024-06-03 20:01:19,582 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-03 20:01:19,582 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 377 transitions, 4704 flow [2024-06-03 20:01:19,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:19,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:19,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:19,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-03 20:01:19,582 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:19,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:19,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1226405070, now seen corresponding path program 26 times [2024-06-03 20:01:19,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:19,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321548541] [2024-06-03 20:01:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:19,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:20,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:20,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321548541] [2024-06-03 20:01:20,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321548541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:20,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:20,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:20,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524568193] [2024-06-03 20:01:20,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:20,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:20,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:20,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:20,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:20,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:20,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 377 transitions, 4704 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:20,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:20,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:20,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:21,337 INFO L124 PetriNetUnfolderBase]: 989/1795 cut-off events. [2024-06-03 20:01:21,337 INFO L125 PetriNetUnfolderBase]: For 115057/115057 co-relation queries the response was YES. [2024-06-03 20:01:21,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11172 conditions, 1795 events. 989/1795 cut-off events. For 115057/115057 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10761 event pairs, 309 based on Foata normal form. 2/1797 useless extension candidates. Maximal degree in co-relation 11017. Up to 1717 conditions per place. [2024-06-03 20:01:21,358 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 361 selfloop transitions, 29 changer transitions 0/392 dead transitions. [2024-06-03 20:01:21,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 392 transitions, 5564 flow [2024-06-03 20:01:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:21,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 20:01:21,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-03 20:01:21,359 INFO L175 Difference]: Start difference. First operand has 407 places, 377 transitions, 4704 flow. Second operand 10 states and 108 transitions. [2024-06-03 20:01:21,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 392 transitions, 5564 flow [2024-06-03 20:01:21,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 392 transitions, 5486 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:21,935 INFO L231 Difference]: Finished difference. Result has 407 places, 379 transitions, 4737 flow [2024-06-03 20:01:21,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4626, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4737, PETRI_PLACES=407, PETRI_TRANSITIONS=379} [2024-06-03 20:01:21,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-03 20:01:21,935 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 379 transitions, 4737 flow [2024-06-03 20:01:21,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:21,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:21,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:21,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-03 20:01:21,936 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:21,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1864830362, now seen corresponding path program 27 times [2024-06-03 20:01:21,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:21,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241393433] [2024-06-03 20:01:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:21,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:23,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:23,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241393433] [2024-06-03 20:01:23,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241393433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:23,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:23,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:23,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211401141] [2024-06-03 20:01:23,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:23,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:23,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:23,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:23,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:23,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:23,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 379 transitions, 4737 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:23,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:23,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:23,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:23,721 INFO L124 PetriNetUnfolderBase]: 1005/1821 cut-off events. [2024-06-03 20:01:23,721 INFO L125 PetriNetUnfolderBase]: For 129978/129978 co-relation queries the response was YES. [2024-06-03 20:01:23,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11618 conditions, 1821 events. 1005/1821 cut-off events. For 129978/129978 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10907 event pairs, 306 based on Foata normal form. 2/1823 useless extension candidates. Maximal degree in co-relation 11463. Up to 1715 conditions per place. [2024-06-03 20:01:23,738 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 361 selfloop transitions, 34 changer transitions 0/397 dead transitions. [2024-06-03 20:01:23,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 397 transitions, 5883 flow [2024-06-03 20:01:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:23,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 20:01:23,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-03 20:01:23,738 INFO L175 Difference]: Start difference. First operand has 407 places, 379 transitions, 4737 flow. Second operand 10 states and 107 transitions. [2024-06-03 20:01:23,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 397 transitions, 5883 flow [2024-06-03 20:01:24,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 397 transitions, 5794 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:24,430 INFO L231 Difference]: Finished difference. Result has 409 places, 383 transitions, 4821 flow [2024-06-03 20:01:24,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4648, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4821, PETRI_PLACES=409, PETRI_TRANSITIONS=383} [2024-06-03 20:01:24,431 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-03 20:01:24,431 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 383 transitions, 4821 flow [2024-06-03 20:01:24,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:24,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:24,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:24,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-03 20:01:24,432 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:24,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash -813097806, now seen corresponding path program 28 times [2024-06-03 20:01:24,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:24,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471596842] [2024-06-03 20:01:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:24,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:25,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:25,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471596842] [2024-06-03 20:01:25,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471596842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:25,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:25,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:25,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588846069] [2024-06-03 20:01:25,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:25,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:25,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:25,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:25,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:25,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:25,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 383 transitions, 4821 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:25,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:25,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:25,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:26,132 INFO L124 PetriNetUnfolderBase]: 1011/1831 cut-off events. [2024-06-03 20:01:26,132 INFO L125 PetriNetUnfolderBase]: For 132658/132658 co-relation queries the response was YES. [2024-06-03 20:01:26,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11715 conditions, 1831 events. 1011/1831 cut-off events. For 132658/132658 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10982 event pairs, 308 based on Foata normal form. 2/1833 useless extension candidates. Maximal degree in co-relation 11559. Up to 1736 conditions per place. [2024-06-03 20:01:26,152 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 362 selfloop transitions, 34 changer transitions 0/398 dead transitions. [2024-06-03 20:01:26,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 398 transitions, 5701 flow [2024-06-03 20:01:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 20:01:26,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-03 20:01:26,153 INFO L175 Difference]: Start difference. First operand has 409 places, 383 transitions, 4821 flow. Second operand 10 states and 109 transitions. [2024-06-03 20:01:26,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 398 transitions, 5701 flow [2024-06-03 20:01:26,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 398 transitions, 5619 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:26,797 INFO L231 Difference]: Finished difference. Result has 413 places, 385 transitions, 4868 flow [2024-06-03 20:01:26,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4739, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4868, PETRI_PLACES=413, PETRI_TRANSITIONS=385} [2024-06-03 20:01:26,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 382 predicate places. [2024-06-03 20:01:26,797 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 385 transitions, 4868 flow [2024-06-03 20:01:26,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:26,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:26,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:26,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-03 20:01:26,797 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:26,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:26,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1232667690, now seen corresponding path program 29 times [2024-06-03 20:01:26,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:26,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293822213] [2024-06-03 20:01:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:26,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:27,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:27,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293822213] [2024-06-03 20:01:27,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293822213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:27,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:27,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:27,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761338616] [2024-06-03 20:01:27,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:27,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:27,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:27,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:27,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:27,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:27,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 385 transitions, 4868 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:27,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:27,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:27,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:28,541 INFO L124 PetriNetUnfolderBase]: 1017/1841 cut-off events. [2024-06-03 20:01:28,541 INFO L125 PetriNetUnfolderBase]: For 134882/134882 co-relation queries the response was YES. [2024-06-03 20:01:28,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11829 conditions, 1841 events. 1017/1841 cut-off events. For 134882/134882 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 11051 event pairs, 311 based on Foata normal form. 2/1843 useless extension candidates. Maximal degree in co-relation 11671. Up to 1751 conditions per place. [2024-06-03 20:01:28,562 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 368 selfloop transitions, 32 changer transitions 0/402 dead transitions. [2024-06-03 20:01:28,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 402 transitions, 5992 flow [2024-06-03 20:01:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 20:01:28,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-03 20:01:28,563 INFO L175 Difference]: Start difference. First operand has 413 places, 385 transitions, 4868 flow. Second operand 10 states and 112 transitions. [2024-06-03 20:01:28,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 402 transitions, 5992 flow [2024-06-03 20:01:29,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 402 transitions, 5885 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:29,209 INFO L231 Difference]: Finished difference. Result has 415 places, 387 transitions, 4886 flow [2024-06-03 20:01:29,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4761, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4886, PETRI_PLACES=415, PETRI_TRANSITIONS=387} [2024-06-03 20:01:29,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 384 predicate places. [2024-06-03 20:01:29,209 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 387 transitions, 4886 flow [2024-06-03 20:01:29,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:29,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:29,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:29,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-03 20:01:29,210 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:29,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:29,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1864830548, now seen corresponding path program 35 times [2024-06-03 20:01:29,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:29,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725373742] [2024-06-03 20:01:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:29,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:30,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:30,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:30,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725373742] [2024-06-03 20:01:30,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725373742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:30,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:30,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:30,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791379582] [2024-06-03 20:01:30,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:30,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:30,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:30,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:30,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:30,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:30,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 387 transitions, 4886 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:30,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:30,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:30,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:30,699 INFO L124 PetriNetUnfolderBase]: 1021/1849 cut-off events. [2024-06-03 20:01:30,699 INFO L125 PetriNetUnfolderBase]: For 136927/136927 co-relation queries the response was YES. [2024-06-03 20:01:30,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11845 conditions, 1849 events. 1021/1849 cut-off events. For 136927/136927 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 11094 event pairs, 317 based on Foata normal form. 2/1851 useless extension candidates. Maximal degree in co-relation 11686. Up to 1811 conditions per place. [2024-06-03 20:01:30,720 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 378 selfloop transitions, 18 changer transitions 0/398 dead transitions. [2024-06-03 20:01:30,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 398 transitions, 5724 flow [2024-06-03 20:01:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:30,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:30,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-03 20:01:30,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-03 20:01:30,732 INFO L175 Difference]: Start difference. First operand has 415 places, 387 transitions, 4886 flow. Second operand 10 states and 98 transitions. [2024-06-03 20:01:30,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 398 transitions, 5724 flow [2024-06-03 20:01:31,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 398 transitions, 5346 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-03 20:01:31,474 INFO L231 Difference]: Finished difference. Result has 414 places, 388 transitions, 4574 flow [2024-06-03 20:01:31,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4508, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4574, PETRI_PLACES=414, PETRI_TRANSITIONS=388} [2024-06-03 20:01:31,475 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-03 20:01:31,475 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 388 transitions, 4574 flow [2024-06-03 20:01:31,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:31,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:31,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:31,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-03 20:01:31,475 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:31,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:31,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1864823852, now seen corresponding path program 30 times [2024-06-03 20:01:31,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:31,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328463692] [2024-06-03 20:01:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:31,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:32,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:32,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328463692] [2024-06-03 20:01:32,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328463692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:32,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:32,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:32,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807196417] [2024-06-03 20:01:32,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:32,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:32,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:32,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:32,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:32,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:32,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 388 transitions, 4574 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:32,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:32,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:32,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:33,266 INFO L124 PetriNetUnfolderBase]: 1027/1859 cut-off events. [2024-06-03 20:01:33,267 INFO L125 PetriNetUnfolderBase]: For 138605/138605 co-relation queries the response was YES. [2024-06-03 20:01:33,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11299 conditions, 1859 events. 1027/1859 cut-off events. For 138605/138605 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11214 event pairs, 309 based on Foata normal form. 2/1861 useless extension candidates. Maximal degree in co-relation 11142. Up to 1777 conditions per place. [2024-06-03 20:01:33,288 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 372 selfloop transitions, 29 changer transitions 0/403 dead transitions. [2024-06-03 20:01:33,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 403 transitions, 5452 flow [2024-06-03 20:01:33,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:33,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 20:01:33,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 20:01:33,289 INFO L175 Difference]: Start difference. First operand has 414 places, 388 transitions, 4574 flow. Second operand 10 states and 105 transitions. [2024-06-03 20:01:33,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 403 transitions, 5452 flow [2024-06-03 20:01:33,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 403 transitions, 5398 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:33,886 INFO L231 Difference]: Finished difference. Result has 416 places, 390 transitions, 4627 flow [2024-06-03 20:01:33,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4520, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4627, PETRI_PLACES=416, PETRI_TRANSITIONS=390} [2024-06-03 20:01:33,886 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 385 predicate places. [2024-06-03 20:01:33,886 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 390 transitions, 4627 flow [2024-06-03 20:01:33,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:33,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:33,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:33,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-03 20:01:33,886 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:33,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:33,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1232667876, now seen corresponding path program 36 times [2024-06-03 20:01:33,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:33,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119602035] [2024-06-03 20:01:33,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:33,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:34,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:34,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119602035] [2024-06-03 20:01:34,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119602035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:34,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:34,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:34,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580515529] [2024-06-03 20:01:34,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:34,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:34,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:34,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:34,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:34,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:34,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 390 transitions, 4627 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:34,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:34,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:34,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:35,504 INFO L124 PetriNetUnfolderBase]: 1024/1854 cut-off events. [2024-06-03 20:01:35,504 INFO L125 PetriNetUnfolderBase]: For 127250/127250 co-relation queries the response was YES. [2024-06-03 20:01:35,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11064 conditions, 1854 events. 1024/1854 cut-off events. For 127250/127250 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 11167 event pairs, 318 based on Foata normal form. 2/1856 useless extension candidates. Maximal degree in co-relation 10906. Up to 1801 conditions per place. [2024-06-03 20:01:35,526 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 373 selfloop transitions, 25 changer transitions 0/400 dead transitions. [2024-06-03 20:01:35,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 400 transitions, 5445 flow [2024-06-03 20:01:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-03 20:01:35,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-03 20:01:35,527 INFO L175 Difference]: Start difference. First operand has 416 places, 390 transitions, 4627 flow. Second operand 10 states and 100 transitions. [2024-06-03 20:01:35,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 400 transitions, 5445 flow [2024-06-03 20:01:36,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 400 transitions, 5352 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:36,168 INFO L231 Difference]: Finished difference. Result has 418 places, 390 transitions, 4588 flow [2024-06-03 20:01:36,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4534, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4588, PETRI_PLACES=418, PETRI_TRANSITIONS=390} [2024-06-03 20:01:36,169 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 387 predicate places. [2024-06-03 20:01:36,169 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 390 transitions, 4588 flow [2024-06-03 20:01:36,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:36,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:36,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:36,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-03 20:01:36,169 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:36,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:36,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1864593212, now seen corresponding path program 31 times [2024-06-03 20:01:36,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:36,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49765178] [2024-06-03 20:01:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:36,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:37,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:37,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49765178] [2024-06-03 20:01:37,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49765178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:37,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:37,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:37,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944439756] [2024-06-03 20:01:37,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:37,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:37,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:37,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:37,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:37,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:37,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 390 transitions, 4588 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:37,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:37,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:37,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:37,888 INFO L124 PetriNetUnfolderBase]: 1020/1848 cut-off events. [2024-06-03 20:01:37,889 INFO L125 PetriNetUnfolderBase]: For 115275/115275 co-relation queries the response was YES. [2024-06-03 20:01:37,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10733 conditions, 1848 events. 1020/1848 cut-off events. For 115275/115275 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 11152 event pairs, 309 based on Foata normal form. 2/1850 useless extension candidates. Maximal degree in co-relation 10574. Up to 1766 conditions per place. [2024-06-03 20:01:37,909 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 374 selfloop transitions, 27 changer transitions 0/403 dead transitions. [2024-06-03 20:01:37,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 403 transitions, 5426 flow [2024-06-03 20:01:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:37,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 20:01:37,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-03 20:01:37,910 INFO L175 Difference]: Start difference. First operand has 418 places, 390 transitions, 4588 flow. Second operand 10 states and 106 transitions. [2024-06-03 20:01:37,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 403 transitions, 5426 flow [2024-06-03 20:01:38,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 403 transitions, 5213 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:38,426 INFO L231 Difference]: Finished difference. Result has 418 places, 390 transitions, 4434 flow [2024-06-03 20:01:38,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4375, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4434, PETRI_PLACES=418, PETRI_TRANSITIONS=390} [2024-06-03 20:01:38,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 387 predicate places. [2024-06-03 20:01:38,427 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 390 transitions, 4434 flow [2024-06-03 20:01:38,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:38,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:38,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:38,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-03 20:01:38,427 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:38,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:38,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1232661180, now seen corresponding path program 32 times [2024-06-03 20:01:38,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:38,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882578876] [2024-06-03 20:01:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:38,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:39,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:39,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882578876] [2024-06-03 20:01:39,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882578876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:39,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:39,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:39,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701533040] [2024-06-03 20:01:39,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:39,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:39,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:39,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:39,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:39,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:39,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 390 transitions, 4434 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:39,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:39,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:39,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:40,063 INFO L124 PetriNetUnfolderBase]: 1016/1842 cut-off events. [2024-06-03 20:01:40,063 INFO L125 PetriNetUnfolderBase]: For 99376/99376 co-relation queries the response was YES. [2024-06-03 20:01:40,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10259 conditions, 1842 events. 1016/1842 cut-off events. For 99376/99376 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 11101 event pairs, 307 based on Foata normal form. 2/1844 useless extension candidates. Maximal degree in co-relation 10100. Up to 1764 conditions per place. [2024-06-03 20:01:40,084 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 372 selfloop transitions, 29 changer transitions 0/403 dead transitions. [2024-06-03 20:01:40,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 403 transitions, 5272 flow [2024-06-03 20:01:40,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:40,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:40,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 20:01:40,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-03 20:01:40,084 INFO L175 Difference]: Start difference. First operand has 418 places, 390 transitions, 4434 flow. Second operand 10 states and 108 transitions. [2024-06-03 20:01:40,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 403 transitions, 5272 flow [2024-06-03 20:01:40,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 403 transitions, 5167 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-03 20:01:40,581 INFO L231 Difference]: Finished difference. Result has 419 places, 390 transitions, 4392 flow [2024-06-03 20:01:40,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4329, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4392, PETRI_PLACES=419, PETRI_TRANSITIONS=390} [2024-06-03 20:01:40,582 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-03 20:01:40,582 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 390 transitions, 4392 flow [2024-06-03 20:01:40,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:40,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:40,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:40,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-03 20:01:40,582 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:40,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:40,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1431372480, now seen corresponding path program 1 times [2024-06-03 20:01:40,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:40,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439917602] [2024-06-03 20:01:40,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:40,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:41,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:41,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:41,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439917602] [2024-06-03 20:01:41,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439917602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:41,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:41,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:41,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483292596] [2024-06-03 20:01:41,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:41,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:41,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:41,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:41,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:41,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:41,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 390 transitions, 4392 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:41,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:41,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:41,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:42,516 INFO L124 PetriNetUnfolderBase]: 1043/1903 cut-off events. [2024-06-03 20:01:42,517 INFO L125 PetriNetUnfolderBase]: For 182795/182795 co-relation queries the response was YES. [2024-06-03 20:01:42,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11056 conditions, 1903 events. 1043/1903 cut-off events. For 182795/182795 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11482 event pairs, 137 based on Foata normal form. 8/1911 useless extension candidates. Maximal degree in co-relation 10896. Up to 943 conditions per place. [2024-06-03 20:01:42,537 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 184 changer transitions 21/420 dead transitions. [2024-06-03 20:01:42,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 420 transitions, 5544 flow [2024-06-03 20:01:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:01:42,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:01:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-03 20:01:42,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-03 20:01:42,538 INFO L175 Difference]: Start difference. First operand has 419 places, 390 transitions, 4392 flow. Second operand 12 states and 139 transitions. [2024-06-03 20:01:42,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 420 transitions, 5544 flow [2024-06-03 20:01:43,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 420 transitions, 5399 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:43,313 INFO L231 Difference]: Finished difference. Result has 421 places, 384 transitions, 4559 flow [2024-06-03 20:01:43,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4247, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4559, PETRI_PLACES=421, PETRI_TRANSITIONS=384} [2024-06-03 20:01:43,313 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 390 predicate places. [2024-06-03 20:01:43,313 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 384 transitions, 4559 flow [2024-06-03 20:01:43,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:43,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:43,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:43,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-03 20:01:43,314 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:43,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:43,314 INFO L85 PathProgramCache]: Analyzing trace with hash 744514138, now seen corresponding path program 2 times [2024-06-03 20:01:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:43,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748827293] [2024-06-03 20:01:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:43,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:44,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:44,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748827293] [2024-06-03 20:01:44,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748827293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:44,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:44,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:44,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508555956] [2024-06-03 20:01:44,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:44,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:44,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:44,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:44,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:44,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:44,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 384 transitions, 4559 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:44,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:44,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:44,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:45,151 INFO L124 PetriNetUnfolderBase]: 1057/1927 cut-off events. [2024-06-03 20:01:45,151 INFO L125 PetriNetUnfolderBase]: For 256413/256413 co-relation queries the response was YES. [2024-06-03 20:01:45,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12527 conditions, 1927 events. 1057/1927 cut-off events. For 256413/256413 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11553 event pairs, 150 based on Foata normal form. 8/1935 useless extension candidates. Maximal degree in co-relation 12367. Up to 1020 conditions per place. [2024-06-03 20:01:45,173 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 186 changer transitions 17/421 dead transitions. [2024-06-03 20:01:45,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 421 transitions, 5777 flow [2024-06-03 20:01:45,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:01:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:01:45,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-03 20:01:45,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-03 20:01:45,174 INFO L175 Difference]: Start difference. First operand has 421 places, 384 transitions, 4559 flow. Second operand 12 states and 149 transitions. [2024-06-03 20:01:45,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 421 transitions, 5777 flow [2024-06-03 20:01:46,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 421 transitions, 5460 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-03 20:01:46,092 INFO L231 Difference]: Finished difference. Result has 413 places, 381 transitions, 4585 flow [2024-06-03 20:01:46,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4248, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4585, PETRI_PLACES=413, PETRI_TRANSITIONS=381} [2024-06-03 20:01:46,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 382 predicate places. [2024-06-03 20:01:46,092 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 381 transitions, 4585 flow [2024-06-03 20:01:46,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:46,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:46,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:46,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-03 20:01:46,093 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:46,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:46,093 INFO L85 PathProgramCache]: Analyzing trace with hash -77618846, now seen corresponding path program 3 times [2024-06-03 20:01:46,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:46,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544296385] [2024-06-03 20:01:46,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:46,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:47,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:47,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:47,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544296385] [2024-06-03 20:01:47,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544296385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:47,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:47,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:47,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895560754] [2024-06-03 20:01:47,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:47,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:47,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:47,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:47,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:47,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:47,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 381 transitions, 4585 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:47,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:47,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:47,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:47,948 INFO L124 PetriNetUnfolderBase]: 1059/1935 cut-off events. [2024-06-03 20:01:47,948 INFO L125 PetriNetUnfolderBase]: For 311877/311877 co-relation queries the response was YES. [2024-06-03 20:01:47,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13547 conditions, 1935 events. 1059/1935 cut-off events. For 311877/311877 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 11594 event pairs, 155 based on Foata normal form. 8/1943 useless extension candidates. Maximal degree in co-relation 13390. Up to 1092 conditions per place. [2024-06-03 20:01:47,971 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 187 changer transitions 10/412 dead transitions. [2024-06-03 20:01:47,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 412 transitions, 5749 flow [2024-06-03 20:01:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:01:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:01:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-03 20:01:47,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-03 20:01:47,972 INFO L175 Difference]: Start difference. First operand has 413 places, 381 transitions, 4585 flow. Second operand 12 states and 143 transitions. [2024-06-03 20:01:47,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 412 transitions, 5749 flow [2024-06-03 20:01:49,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 412 transitions, 5331 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:49,092 INFO L231 Difference]: Finished difference. Result has 409 places, 379 transitions, 4529 flow [2024-06-03 20:01:49,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4169, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4529, PETRI_PLACES=409, PETRI_TRANSITIONS=379} [2024-06-03 20:01:49,093 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-03 20:01:49,093 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 379 transitions, 4529 flow [2024-06-03 20:01:49,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:49,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:49,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:49,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-03 20:01:49,093 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:49,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:49,093 INFO L85 PathProgramCache]: Analyzing trace with hash 783189352, now seen corresponding path program 4 times [2024-06-03 20:01:49,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:49,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090285987] [2024-06-03 20:01:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:49,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:50,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:50,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090285987] [2024-06-03 20:01:50,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090285987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:50,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:50,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:50,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158401622] [2024-06-03 20:01:50,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:50,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:50,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:50,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:50,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:50,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:50,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 379 transitions, 4529 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:50,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:50,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:50,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:50,969 INFO L124 PetriNetUnfolderBase]: 1046/1912 cut-off events. [2024-06-03 20:01:50,969 INFO L125 PetriNetUnfolderBase]: For 311825/311825 co-relation queries the response was YES. [2024-06-03 20:01:50,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13133 conditions, 1912 events. 1046/1912 cut-off events. For 311825/311825 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 11446 event pairs, 162 based on Foata normal form. 10/1922 useless extension candidates. Maximal degree in co-relation 12978. Up to 1148 conditions per place. [2024-06-03 20:01:50,991 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 186 changer transitions 11/403 dead transitions. [2024-06-03 20:01:50,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 403 transitions, 5413 flow [2024-06-03 20:01:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:01:50,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:01:50,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-03 20:01:50,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-03 20:01:50,992 INFO L175 Difference]: Start difference. First operand has 409 places, 379 transitions, 4529 flow. Second operand 12 states and 135 transitions. [2024-06-03 20:01:50,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 403 transitions, 5413 flow [2024-06-03 20:01:52,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 403 transitions, 5034 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:52,390 INFO L231 Difference]: Finished difference. Result has 410 places, 377 transitions, 4512 flow [2024-06-03 20:01:52,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4150, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4512, PETRI_PLACES=410, PETRI_TRANSITIONS=377} [2024-06-03 20:01:52,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 379 predicate places. [2024-06-03 20:01:52,391 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 377 transitions, 4512 flow [2024-06-03 20:01:52,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:52,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:52,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:52,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-03 20:01:52,391 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:52,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:52,391 INFO L85 PathProgramCache]: Analyzing trace with hash 779464702, now seen corresponding path program 5 times [2024-06-03 20:01:52,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:52,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747280837] [2024-06-03 20:01:52,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:52,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:53,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:53,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747280837] [2024-06-03 20:01:53,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747280837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:53,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:53,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:53,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944494037] [2024-06-03 20:01:53,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:53,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:53,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:53,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:53,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:53,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:53,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 377 transitions, 4512 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:53,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:53,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:53,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:54,134 INFO L124 PetriNetUnfolderBase]: 1012/1846 cut-off events. [2024-06-03 20:01:54,134 INFO L125 PetriNetUnfolderBase]: For 242089/242089 co-relation queries the response was YES. [2024-06-03 20:01:54,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11996 conditions, 1846 events. 1012/1846 cut-off events. For 242089/242089 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10990 event pairs, 138 based on Foata normal form. 8/1854 useless extension candidates. Maximal degree in co-relation 11841. Up to 1020 conditions per place. [2024-06-03 20:01:54,150 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 183 changer transitions 13/406 dead transitions. [2024-06-03 20:01:54,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 406 transitions, 5644 flow [2024-06-03 20:01:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:01:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:01:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-03 20:01:54,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 20:01:54,151 INFO L175 Difference]: Start difference. First operand has 410 places, 377 transitions, 4512 flow. Second operand 12 states and 140 transitions. [2024-06-03 20:01:54,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 406 transitions, 5644 flow [2024-06-03 20:01:55,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 406 transitions, 5263 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:55,108 INFO L231 Difference]: Finished difference. Result has 411 places, 374 transitions, 4479 flow [2024-06-03 20:01:55,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4133, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4479, PETRI_PLACES=411, PETRI_TRANSITIONS=374} [2024-06-03 20:01:55,108 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-03 20:01:55,108 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 374 transitions, 4479 flow [2024-06-03 20:01:55,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:55,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:55,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:55,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-03 20:01:55,109 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:55,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:55,109 INFO L85 PathProgramCache]: Analyzing trace with hash 783183772, now seen corresponding path program 6 times [2024-06-03 20:01:55,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:55,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10587793] [2024-06-03 20:01:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:55,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:56,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:56,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10587793] [2024-06-03 20:01:56,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10587793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:56,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:56,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:56,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880139704] [2024-06-03 20:01:56,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:56,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:56,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:56,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:56,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 374 transitions, 4479 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:56,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:56,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:56,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:56,870 INFO L124 PetriNetUnfolderBase]: 976/1774 cut-off events. [2024-06-03 20:01:56,871 INFO L125 PetriNetUnfolderBase]: For 186353/186353 co-relation queries the response was YES. [2024-06-03 20:01:56,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10842 conditions, 1774 events. 976/1774 cut-off events. For 186353/186353 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10483 event pairs, 120 based on Foata normal form. 8/1782 useless extension candidates. Maximal degree in co-relation 10686. Up to 1020 conditions per place. [2024-06-03 20:01:56,889 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 195 selfloop transitions, 179 changer transitions 20/396 dead transitions. [2024-06-03 20:01:56,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 396 transitions, 5329 flow [2024-06-03 20:01:56,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:01:56,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:01:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-03 20:01:56,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-03 20:01:56,890 INFO L175 Difference]: Start difference. First operand has 411 places, 374 transitions, 4479 flow. Second operand 12 states and 131 transitions. [2024-06-03 20:01:56,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 396 transitions, 5329 flow [2024-06-03 20:01:57,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 396 transitions, 4958 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:57,796 INFO L231 Difference]: Finished difference. Result has 409 places, 367 transitions, 4392 flow [2024-06-03 20:01:57,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4108, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4392, PETRI_PLACES=409, PETRI_TRANSITIONS=367} [2024-06-03 20:01:57,796 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-03 20:01:57,796 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 367 transitions, 4392 flow [2024-06-03 20:01:57,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:57,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:57,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:57,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-03 20:01:57,797 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:01:57,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash -479312194, now seen corresponding path program 7 times [2024-06-03 20:01:57,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:57,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527241985] [2024-06-03 20:01:57,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:57,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:59,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:59,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527241985] [2024-06-03 20:01:59,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527241985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:59,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:59,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:59,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714419052] [2024-06-03 20:01:59,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:59,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:59,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:59,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:59,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:59,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:01:59,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 367 transitions, 4392 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:01:59,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:59,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:01:59,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:59,754 INFO L124 PetriNetUnfolderBase]: 1017/1853 cut-off events. [2024-06-03 20:01:59,754 INFO L125 PetriNetUnfolderBase]: For 306628/306628 co-relation queries the response was YES. [2024-06-03 20:01:59,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13108 conditions, 1853 events. 1017/1853 cut-off events. For 306628/306628 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10903 event pairs, 228 based on Foata normal form. 8/1861 useless extension candidates. Maximal degree in co-relation 12954. Up to 624 conditions per place. [2024-06-03 20:01:59,775 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 235 selfloop transitions, 141 changer transitions 18/396 dead transitions. [2024-06-03 20:01:59,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 396 transitions, 5520 flow [2024-06-03 20:01:59,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:01:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:01:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-03 20:01:59,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-03 20:01:59,776 INFO L175 Difference]: Start difference. First operand has 409 places, 367 transitions, 4392 flow. Second operand 11 states and 138 transitions. [2024-06-03 20:01:59,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 396 transitions, 5520 flow [2024-06-03 20:02:00,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 396 transitions, 5081 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:00,807 INFO L231 Difference]: Finished difference. Result has 397 places, 361 transitions, 4172 flow [2024-06-03 20:02:00,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3955, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4172, PETRI_PLACES=397, PETRI_TRANSITIONS=361} [2024-06-03 20:02:00,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-03 20:02:00,807 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 361 transitions, 4172 flow [2024-06-03 20:02:00,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:00,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:00,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:00,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-03 20:02:00,808 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:00,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:00,808 INFO L85 PathProgramCache]: Analyzing trace with hash 182219064, now seen corresponding path program 8 times [2024-06-03 20:02:00,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:00,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690254021] [2024-06-03 20:02:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:00,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:01,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:01,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690254021] [2024-06-03 20:02:01,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690254021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:01,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:01,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:01,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646485818] [2024-06-03 20:02:01,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:01,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:01,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:01,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:01,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:02,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:02,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 361 transitions, 4172 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:02,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:02,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:02,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:02,684 INFO L124 PetriNetUnfolderBase]: 1036/1896 cut-off events. [2024-06-03 20:02:02,685 INFO L125 PetriNetUnfolderBase]: For 374689/374689 co-relation queries the response was YES. [2024-06-03 20:02:02,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14144 conditions, 1896 events. 1036/1896 cut-off events. For 374689/374689 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 11258 event pairs, 160 based on Foata normal form. 8/1904 useless extension candidates. Maximal degree in co-relation 13991. Up to 1296 conditions per place. [2024-06-03 20:02:02,706 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 261 selfloop transitions, 121 changer transitions 10/394 dead transitions. [2024-06-03 20:02:02,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 394 transitions, 5314 flow [2024-06-03 20:02:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:02,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-03 20:02:02,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-03 20:02:02,707 INFO L175 Difference]: Start difference. First operand has 397 places, 361 transitions, 4172 flow. Second operand 12 states and 148 transitions. [2024-06-03 20:02:02,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 394 transitions, 5314 flow [2024-06-03 20:02:03,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 394 transitions, 5046 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:03,782 INFO L231 Difference]: Finished difference. Result has 396 places, 362 transitions, 4162 flow [2024-06-03 20:02:03,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3908, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4162, PETRI_PLACES=396, PETRI_TRANSITIONS=362} [2024-06-03 20:02:03,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-03 20:02:03,783 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 362 transitions, 4162 flow [2024-06-03 20:02:03,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:03,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:03,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:03,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-03 20:02:03,783 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:03,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:03,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1321553756, now seen corresponding path program 9 times [2024-06-03 20:02:03,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:03,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698226118] [2024-06-03 20:02:03,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:03,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:04,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:04,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698226118] [2024-06-03 20:02:04,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698226118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:04,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:04,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:04,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728174998] [2024-06-03 20:02:04,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:04,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:04,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:04,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:04,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:04,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:04,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 362 transitions, 4162 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:04,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:04,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:04,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:05,660 INFO L124 PetriNetUnfolderBase]: 1034/1894 cut-off events. [2024-06-03 20:02:05,661 INFO L125 PetriNetUnfolderBase]: For 374517/374517 co-relation queries the response was YES. [2024-06-03 20:02:05,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14182 conditions, 1894 events. 1034/1894 cut-off events. For 374517/374517 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 11294 event pairs, 154 based on Foata normal form. 8/1902 useless extension candidates. Maximal degree in co-relation 14028. Up to 1286 conditions per place. [2024-06-03 20:02:05,682 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 260 selfloop transitions, 119 changer transitions 13/394 dead transitions. [2024-06-03 20:02:05,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 394 transitions, 5286 flow [2024-06-03 20:02:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-03 20:02:05,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-03 20:02:05,683 INFO L175 Difference]: Start difference. First operand has 396 places, 362 transitions, 4162 flow. Second operand 12 states and 149 transitions. [2024-06-03 20:02:05,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 394 transitions, 5286 flow [2024-06-03 20:02:06,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 394 transitions, 5096 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:06,969 INFO L231 Difference]: Finished difference. Result has 398 places, 360 transitions, 4193 flow [2024-06-03 20:02:06,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3974, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4193, PETRI_PLACES=398, PETRI_TRANSITIONS=360} [2024-06-03 20:02:06,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-03 20:02:06,970 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 360 transitions, 4193 flow [2024-06-03 20:02:06,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:06,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:06,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:06,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-03 20:02:06,970 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:06,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:06,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1325278406, now seen corresponding path program 10 times [2024-06-03 20:02:06,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:06,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008568982] [2024-06-03 20:02:06,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:06,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:07,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:07,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008568982] [2024-06-03 20:02:07,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008568982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:07,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:07,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:07,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045569345] [2024-06-03 20:02:07,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:07,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:07,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:07,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:07,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:07,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 360 transitions, 4193 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:07,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:07,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:07,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:08,660 INFO L124 PetriNetUnfolderBase]: 1033/1899 cut-off events. [2024-06-03 20:02:08,660 INFO L125 PetriNetUnfolderBase]: For 443471/443471 co-relation queries the response was YES. [2024-06-03 20:02:08,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13964 conditions, 1899 events. 1033/1899 cut-off events. For 443471/443471 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11381 event pairs, 213 based on Foata normal form. 20/1919 useless extension candidates. Maximal degree in co-relation 13810. Up to 1099 conditions per place. [2024-06-03 20:02:08,678 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 211 selfloop transitions, 158 changer transitions 10/381 dead transitions. [2024-06-03 20:02:08,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 381 transitions, 5017 flow [2024-06-03 20:02:08,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:08,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-03 20:02:08,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 20:02:08,679 INFO L175 Difference]: Start difference. First operand has 398 places, 360 transitions, 4193 flow. Second operand 11 states and 143 transitions. [2024-06-03 20:02:08,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 381 transitions, 5017 flow [2024-06-03 20:02:09,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 381 transitions, 4774 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:09,982 INFO L231 Difference]: Finished difference. Result has 394 places, 354 transitions, 4207 flow [2024-06-03 20:02:09,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3950, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4207, PETRI_PLACES=394, PETRI_TRANSITIONS=354} [2024-06-03 20:02:09,982 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-03 20:02:09,982 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 354 transitions, 4207 flow [2024-06-03 20:02:09,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:09,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:09,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:09,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-03 20:02:09,982 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:09,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:09,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1583552172, now seen corresponding path program 11 times [2024-06-03 20:02:09,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:09,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32287299] [2024-06-03 20:02:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:09,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:11,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:11,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32287299] [2024-06-03 20:02:11,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32287299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:11,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:11,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:11,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650676131] [2024-06-03 20:02:11,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:11,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:11,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:11,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:11,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:11,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:11,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 354 transitions, 4207 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:11,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:11,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:11,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:11,762 INFO L124 PetriNetUnfolderBase]: 975/1785 cut-off events. [2024-06-03 20:02:11,762 INFO L125 PetriNetUnfolderBase]: For 300921/300921 co-relation queries the response was YES. [2024-06-03 20:02:11,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12737 conditions, 1785 events. 975/1785 cut-off events. For 300921/300921 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10497 event pairs, 141 based on Foata normal form. 8/1793 useless extension candidates. Maximal degree in co-relation 12586. Up to 1280 conditions per place. [2024-06-03 20:02:11,782 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 111 changer transitions 18/376 dead transitions. [2024-06-03 20:02:11,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 376 transitions, 5019 flow [2024-06-03 20:02:11,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:11,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-03 20:02:11,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 20:02:11,783 INFO L175 Difference]: Start difference. First operand has 394 places, 354 transitions, 4207 flow. Second operand 12 states and 136 transitions. [2024-06-03 20:02:11,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 376 transitions, 5019 flow [2024-06-03 20:02:12,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 376 transitions, 4692 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-03 20:02:12,822 INFO L231 Difference]: Finished difference. Result has 393 places, 347 transitions, 4012 flow [2024-06-03 20:02:12,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3880, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4012, PETRI_PLACES=393, PETRI_TRANSITIONS=347} [2024-06-03 20:02:12,822 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-03 20:02:12,822 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 347 transitions, 4012 flow [2024-06-03 20:02:12,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:12,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:12,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:12,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-03 20:02:12,823 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:12,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:12,823 INFO L85 PathProgramCache]: Analyzing trace with hash -938556614, now seen corresponding path program 12 times [2024-06-03 20:02:12,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:12,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041754604] [2024-06-03 20:02:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:12,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:13,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:13,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041754604] [2024-06-03 20:02:13,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041754604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:13,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:13,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:13,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624932814] [2024-06-03 20:02:13,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:13,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:13,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:13,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:14,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:14,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 347 transitions, 4012 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:14,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:14,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:14,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:14,740 INFO L124 PetriNetUnfolderBase]: 966/1767 cut-off events. [2024-06-03 20:02:14,740 INFO L125 PetriNetUnfolderBase]: For 314523/314523 co-relation queries the response was YES. [2024-06-03 20:02:14,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12475 conditions, 1767 events. 966/1767 cut-off events. For 314523/314523 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10375 event pairs, 195 based on Foata normal form. 10/1777 useless extension candidates. Maximal degree in co-relation 12324. Up to 1037 conditions per place. [2024-06-03 20:02:14,759 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 209 selfloop transitions, 150 changer transitions 9/370 dead transitions. [2024-06-03 20:02:14,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 370 transitions, 4820 flow [2024-06-03 20:02:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:14,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-03 20:02:14,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-03 20:02:14,760 INFO L175 Difference]: Start difference. First operand has 393 places, 347 transitions, 4012 flow. Second operand 12 states and 151 transitions. [2024-06-03 20:02:14,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 370 transitions, 4820 flow [2024-06-03 20:02:15,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 370 transitions, 4563 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:15,779 INFO L231 Difference]: Finished difference. Result has 383 places, 344 transitions, 4027 flow [2024-06-03 20:02:15,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3755, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4027, PETRI_PLACES=383, PETRI_TRANSITIONS=344} [2024-06-03 20:02:15,779 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-03 20:02:15,779 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 344 transitions, 4027 flow [2024-06-03 20:02:15,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:15,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:15,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:15,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-03 20:02:15,780 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:15,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:15,780 INFO L85 PathProgramCache]: Analyzing trace with hash -28155272, now seen corresponding path program 13 times [2024-06-03 20:02:15,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:15,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093338331] [2024-06-03 20:02:15,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:15,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:16,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:16,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:16,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093338331] [2024-06-03 20:02:16,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093338331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:16,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:16,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:16,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343190637] [2024-06-03 20:02:16,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:16,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:16,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:16,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:16,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:17,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:17,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 344 transitions, 4027 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:17,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:17,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:17,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:17,857 INFO L124 PetriNetUnfolderBase]: 981/1804 cut-off events. [2024-06-03 20:02:17,857 INFO L125 PetriNetUnfolderBase]: For 367955/367955 co-relation queries the response was YES. [2024-06-03 20:02:17,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13761 conditions, 1804 events. 981/1804 cut-off events. For 367955/367955 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10657 event pairs, 148 based on Foata normal form. 8/1812 useless extension candidates. Maximal degree in co-relation 13612. Up to 1378 conditions per place. [2024-06-03 20:02:17,879 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 281 selfloop transitions, 81 changer transitions 7/371 dead transitions. [2024-06-03 20:02:17,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 371 transitions, 5081 flow [2024-06-03 20:02:17,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:17,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-03 20:02:17,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-03 20:02:17,880 INFO L175 Difference]: Start difference. First operand has 383 places, 344 transitions, 4027 flow. Second operand 12 states and 145 transitions. [2024-06-03 20:02:17,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 371 transitions, 5081 flow [2024-06-03 20:02:19,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 371 transitions, 4774 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:19,020 INFO L231 Difference]: Finished difference. Result has 382 places, 342 transitions, 3861 flow [2024-06-03 20:02:19,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3722, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3861, PETRI_PLACES=382, PETRI_TRANSITIONS=342} [2024-06-03 20:02:19,020 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-03 20:02:19,020 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 342 transitions, 3861 flow [2024-06-03 20:02:19,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:19,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:19,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:19,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-03 20:02:19,021 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:19,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:19,021 INFO L85 PathProgramCache]: Analyzing trace with hash -28149692, now seen corresponding path program 14 times [2024-06-03 20:02:19,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:19,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693482036] [2024-06-03 20:02:19,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:19,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:20,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:20,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693482036] [2024-06-03 20:02:20,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693482036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:20,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:20,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:20,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94304049] [2024-06-03 20:02:20,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:20,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:20,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:20,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:20,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:20,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:20,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 342 transitions, 3861 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:20,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:20,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:20,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:20,956 INFO L124 PetriNetUnfolderBase]: 950/1743 cut-off events. [2024-06-03 20:02:20,956 INFO L125 PetriNetUnfolderBase]: For 313900/313900 co-relation queries the response was YES. [2024-06-03 20:02:20,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12241 conditions, 1743 events. 950/1743 cut-off events. For 313900/313900 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10229 event pairs, 139 based on Foata normal form. 10/1753 useless extension candidates. Maximal degree in co-relation 12092. Up to 1378 conditions per place. [2024-06-03 20:02:20,974 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 271 selfloop transitions, 78 changer transitions 13/364 dead transitions. [2024-06-03 20:02:20,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 364 transitions, 4653 flow [2024-06-03 20:02:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:20,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:20,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-03 20:02:20,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-03 20:02:20,975 INFO L175 Difference]: Start difference. First operand has 382 places, 342 transitions, 3861 flow. Second operand 12 states and 139 transitions. [2024-06-03 20:02:20,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 364 transitions, 4653 flow [2024-06-03 20:02:21,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 364 transitions, 4483 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-03 20:02:21,964 INFO L231 Difference]: Finished difference. Result has 381 places, 338 transitions, 3801 flow [2024-06-03 20:02:21,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3691, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3801, PETRI_PLACES=381, PETRI_TRANSITIONS=338} [2024-06-03 20:02:21,964 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-03 20:02:21,964 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 338 transitions, 3801 flow [2024-06-03 20:02:21,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:21,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:21,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:21,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-03 20:02:21,965 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:21,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:21,965 INFO L85 PathProgramCache]: Analyzing trace with hash -33661802, now seen corresponding path program 15 times [2024-06-03 20:02:21,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:21,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930807450] [2024-06-03 20:02:21,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:21,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930807450] [2024-06-03 20:02:23,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930807450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:23,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:23,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:23,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694404586] [2024-06-03 20:02:23,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:23,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:23,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:23,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:23,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:23,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:23,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 338 transitions, 3801 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:23,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:23,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:23,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:23,727 INFO L124 PetriNetUnfolderBase]: 966/1779 cut-off events. [2024-06-03 20:02:23,727 INFO L125 PetriNetUnfolderBase]: For 367533/367533 co-relation queries the response was YES. [2024-06-03 20:02:23,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13425 conditions, 1779 events. 966/1779 cut-off events. For 367533/367533 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10486 event pairs, 144 based on Foata normal form. 8/1787 useless extension candidates. Maximal degree in co-relation 13276. Up to 1323 conditions per place. [2024-06-03 20:02:23,748 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 271 selfloop transitions, 82 changer transitions 10/365 dead transitions. [2024-06-03 20:02:23,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 365 transitions, 4843 flow [2024-06-03 20:02:23,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-03 20:02:23,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-03 20:02:23,749 INFO L175 Difference]: Start difference. First operand has 381 places, 338 transitions, 3801 flow. Second operand 11 states and 141 transitions. [2024-06-03 20:02:23,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 365 transitions, 4843 flow [2024-06-03 20:02:24,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 365 transitions, 4683 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:24,842 INFO L231 Difference]: Finished difference. Result has 377 places, 335 transitions, 3770 flow [2024-06-03 20:02:24,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3643, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3770, PETRI_PLACES=377, PETRI_TRANSITIONS=335} [2024-06-03 20:02:24,842 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-03 20:02:24,842 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 335 transitions, 3770 flow [2024-06-03 20:02:24,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:24,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:24,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:24,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-03 20:02:24,842 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:24,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:24,843 INFO L85 PathProgramCache]: Analyzing trace with hash -33512072, now seen corresponding path program 16 times [2024-06-03 20:02:24,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:24,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610560105] [2024-06-03 20:02:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:24,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:25,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:25,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610560105] [2024-06-03 20:02:25,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610560105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:25,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:25,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:25,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271048400] [2024-06-03 20:02:25,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:25,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:25,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:25,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:25,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:25,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:25,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 335 transitions, 3770 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:25,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:25,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:25,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:26,545 INFO L124 PetriNetUnfolderBase]: 953/1756 cut-off events. [2024-06-03 20:02:26,545 INFO L125 PetriNetUnfolderBase]: For 367545/367545 co-relation queries the response was YES. [2024-06-03 20:02:26,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13099 conditions, 1756 events. 953/1756 cut-off events. For 367545/367545 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10321 event pairs, 155 based on Foata normal form. 10/1766 useless extension candidates. Maximal degree in co-relation 12950. Up to 1385 conditions per place. [2024-06-03 20:02:26,564 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 263 selfloop transitions, 80 changer transitions 11/356 dead transitions. [2024-06-03 20:02:26,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 356 transitions, 4544 flow [2024-06-03 20:02:26,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:26,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 20:02:26,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 20:02:26,565 INFO L175 Difference]: Start difference. First operand has 377 places, 335 transitions, 3770 flow. Second operand 11 states and 133 transitions. [2024-06-03 20:02:26,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 356 transitions, 4544 flow [2024-06-03 20:02:27,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 356 transitions, 4371 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:27,622 INFO L231 Difference]: Finished difference. Result has 375 places, 332 transitions, 3728 flow [2024-06-03 20:02:27,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3597, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3728, PETRI_PLACES=375, PETRI_TRANSITIONS=332} [2024-06-03 20:02:27,622 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-03 20:02:27,623 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 332 transitions, 3728 flow [2024-06-03 20:02:27,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:27,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:27,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:27,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-03 20:02:27,623 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:27,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:27,623 INFO L85 PathProgramCache]: Analyzing trace with hash -33517652, now seen corresponding path program 17 times [2024-06-03 20:02:27,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:27,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284437972] [2024-06-03 20:02:27,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:27,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:28,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:28,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284437972] [2024-06-03 20:02:28,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284437972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:28,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:28,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:28,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408293384] [2024-06-03 20:02:28,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:28,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:28,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:28,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:28,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:28,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:28,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 332 transitions, 3728 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:28,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:28,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:28,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:29,423 INFO L124 PetriNetUnfolderBase]: 919/1690 cut-off events. [2024-06-03 20:02:29,423 INFO L125 PetriNetUnfolderBase]: For 300141/300141 co-relation queries the response was YES. [2024-06-03 20:02:29,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11956 conditions, 1690 events. 919/1690 cut-off events. For 300141/300141 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9870 event pairs, 133 based on Foata normal form. 8/1698 useless extension candidates. Maximal degree in co-relation 11808. Up to 1329 conditions per place. [2024-06-03 20:02:29,441 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 261 selfloop transitions, 77 changer transitions 12/352 dead transitions. [2024-06-03 20:02:29,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 352 transitions, 4486 flow [2024-06-03 20:02:29,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:29,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:29,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 20:02:29,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 20:02:29,442 INFO L175 Difference]: Start difference. First operand has 375 places, 332 transitions, 3728 flow. Second operand 11 states and 130 transitions. [2024-06-03 20:02:29,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 352 transitions, 4486 flow [2024-06-03 20:02:30,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 352 transitions, 4324 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:30,405 INFO L231 Difference]: Finished difference. Result has 374 places, 328 transitions, 3674 flow [2024-06-03 20:02:30,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3566, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3674, PETRI_PLACES=374, PETRI_TRANSITIONS=328} [2024-06-03 20:02:30,405 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-03 20:02:30,405 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 328 transitions, 3674 flow [2024-06-03 20:02:30,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:30,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:30,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:30,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-03 20:02:30,406 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:30,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:30,406 INFO L85 PathProgramCache]: Analyzing trace with hash -172045802, now seen corresponding path program 18 times [2024-06-03 20:02:30,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:30,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702932950] [2024-06-03 20:02:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:30,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:31,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:31,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702932950] [2024-06-03 20:02:31,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702932950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:31,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:31,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:31,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221467562] [2024-06-03 20:02:31,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:31,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:31,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:31,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:31,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:31,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:31,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 328 transitions, 3674 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:31,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:31,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:31,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:32,202 INFO L124 PetriNetUnfolderBase]: 911/1674 cut-off events. [2024-06-03 20:02:32,202 INFO L125 PetriNetUnfolderBase]: For 300097/300097 co-relation queries the response was YES. [2024-06-03 20:02:32,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11864 conditions, 1674 events. 911/1674 cut-off events. For 300097/300097 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9720 event pairs, 131 based on Foata normal form. 8/1682 useless extension candidates. Maximal degree in co-relation 11716. Up to 1313 conditions per place. [2024-06-03 20:02:32,216 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 258 selfloop transitions, 78 changer transitions 11/349 dead transitions. [2024-06-03 20:02:32,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 349 transitions, 4428 flow [2024-06-03 20:02:32,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:32,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-03 20:02:32,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-03 20:02:32,216 INFO L175 Difference]: Start difference. First operand has 374 places, 328 transitions, 3674 flow. Second operand 12 states and 137 transitions. [2024-06-03 20:02:32,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 349 transitions, 4428 flow [2024-06-03 20:02:33,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 349 transitions, 4265 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:33,007 INFO L231 Difference]: Finished difference. Result has 372 places, 325 transitions, 3638 flow [2024-06-03 20:02:33,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3511, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3638, PETRI_PLACES=372, PETRI_TRANSITIONS=325} [2024-06-03 20:02:33,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-06-03 20:02:33,008 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 325 transitions, 3638 flow [2024-06-03 20:02:33,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:33,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:33,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:33,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-03 20:02:33,008 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:33,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:33,008 INFO L85 PathProgramCache]: Analyzing trace with hash -175764872, now seen corresponding path program 19 times [2024-06-03 20:02:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:33,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840518717] [2024-06-03 20:02:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:33,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:34,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:34,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840518717] [2024-06-03 20:02:34,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840518717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:34,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:34,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:34,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744851286] [2024-06-03 20:02:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:34,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:34,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:34,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:34,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:34,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:34,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 325 transitions, 3638 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:34,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:34,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:34,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:34,791 INFO L124 PetriNetUnfolderBase]: 926/1707 cut-off events. [2024-06-03 20:02:34,791 INFO L125 PetriNetUnfolderBase]: For 353881/353881 co-relation queries the response was YES. [2024-06-03 20:02:34,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12834 conditions, 1707 events. 926/1707 cut-off events. For 353881/353881 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9941 event pairs, 147 based on Foata normal form. 8/1715 useless extension candidates. Maximal degree in co-relation 12686. Up to 1269 conditions per place. [2024-06-03 20:02:34,809 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 261 selfloop transitions, 76 changer transitions 13/352 dead transitions. [2024-06-03 20:02:34,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 352 transitions, 4648 flow [2024-06-03 20:02:34,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:34,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-03 20:02:34,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:02:34,810 INFO L175 Difference]: Start difference. First operand has 372 places, 325 transitions, 3638 flow. Second operand 12 states and 144 transitions. [2024-06-03 20:02:34,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 352 transitions, 4648 flow [2024-06-03 20:02:35,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 352 transitions, 4460 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:35,986 INFO L231 Difference]: Finished difference. Result has 369 places, 321 transitions, 3561 flow [2024-06-03 20:02:35,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3452, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3561, PETRI_PLACES=369, PETRI_TRANSITIONS=321} [2024-06-03 20:02:35,986 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-03 20:02:35,986 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 321 transitions, 3561 flow [2024-06-03 20:02:35,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:35,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:35,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:35,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-03 20:02:35,987 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:35,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash -172189952, now seen corresponding path program 20 times [2024-06-03 20:02:35,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:35,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942748753] [2024-06-03 20:02:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:35,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:37,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:37,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942748753] [2024-06-03 20:02:37,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942748753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:37,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:37,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:37,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947562545] [2024-06-03 20:02:37,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:37,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:37,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:37,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:37,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:37,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:37,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 321 transitions, 3561 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:37,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:37,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:37,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:37,835 INFO L124 PetriNetUnfolderBase]: 890/1635 cut-off events. [2024-06-03 20:02:37,836 INFO L125 PetriNetUnfolderBase]: For 300086/300086 co-relation queries the response was YES. [2024-06-03 20:02:37,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11631 conditions, 1635 events. 890/1635 cut-off events. For 300086/300086 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9395 event pairs, 127 based on Foata normal form. 8/1643 useless extension candidates. Maximal degree in co-relation 11484. Up to 1269 conditions per place. [2024-06-03 20:02:37,855 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 251 selfloop transitions, 74 changer transitions 16/343 dead transitions. [2024-06-03 20:02:37,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 343 transitions, 4305 flow [2024-06-03 20:02:37,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:37,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-03 20:02:37,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 20:02:37,855 INFO L175 Difference]: Start difference. First operand has 369 places, 321 transitions, 3561 flow. Second operand 12 states and 136 transitions. [2024-06-03 20:02:37,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 343 transitions, 4305 flow [2024-06-03 20:02:39,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 343 transitions, 4110 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:39,046 INFO L231 Difference]: Finished difference. Result has 365 places, 316 transitions, 3466 flow [2024-06-03 20:02:39,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3366, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3466, PETRI_PLACES=365, PETRI_TRANSITIONS=316} [2024-06-03 20:02:39,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-03 20:02:39,047 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 316 transitions, 3466 flow [2024-06-03 20:02:39,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:39,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:39,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:39,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-03 20:02:39,047 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:39,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:39,047 INFO L85 PathProgramCache]: Analyzing trace with hash 462194118, now seen corresponding path program 21 times [2024-06-03 20:02:39,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:39,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385412452] [2024-06-03 20:02:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:39,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:40,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:40,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385412452] [2024-06-03 20:02:40,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385412452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:40,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:40,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:40,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037001610] [2024-06-03 20:02:40,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:40,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:40,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:40,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:40,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:40,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:40,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 316 transitions, 3466 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:40,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:40,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:40,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:40,892 INFO L124 PetriNetUnfolderBase]: 878/1611 cut-off events. [2024-06-03 20:02:40,892 INFO L125 PetriNetUnfolderBase]: For 299661/299661 co-relation queries the response was YES. [2024-06-03 20:02:40,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11430 conditions, 1611 events. 878/1611 cut-off events. For 299661/299661 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9189 event pairs, 117 based on Foata normal form. 8/1619 useless extension candidates. Maximal degree in co-relation 11284. Up to 923 conditions per place. [2024-06-03 20:02:40,910 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 231 selfloop transitions, 100 changer transitions 15/348 dead transitions. [2024-06-03 20:02:40,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 348 transitions, 4490 flow [2024-06-03 20:02:40,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:40,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:40,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-03 20:02:40,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-03 20:02:40,911 INFO L175 Difference]: Start difference. First operand has 365 places, 316 transitions, 3466 flow. Second operand 12 states and 151 transitions. [2024-06-03 20:02:40,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 348 transitions, 4490 flow [2024-06-03 20:02:42,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 348 transitions, 4270 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:42,079 INFO L231 Difference]: Finished difference. Result has 359 places, 312 transitions, 3404 flow [2024-06-03 20:02:42,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3248, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3404, PETRI_PLACES=359, PETRI_TRANSITIONS=312} [2024-06-03 20:02:42,079 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-03 20:02:42,079 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 312 transitions, 3404 flow [2024-06-03 20:02:42,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:42,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:42,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:42,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-03 20:02:42,080 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:42,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:42,080 INFO L85 PathProgramCache]: Analyzing trace with hash 957311878, now seen corresponding path program 22 times [2024-06-03 20:02:42,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:42,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879288429] [2024-06-03 20:02:42,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:42,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:43,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:43,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879288429] [2024-06-03 20:02:43,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879288429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:43,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:43,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:43,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338428517] [2024-06-03 20:02:43,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:43,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:43,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:43,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:43,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:43,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:43,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 312 transitions, 3404 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:43,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:43,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:43,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:43,951 INFO L124 PetriNetUnfolderBase]: 889/1634 cut-off events. [2024-06-03 20:02:43,951 INFO L125 PetriNetUnfolderBase]: For 367043/367043 co-relation queries the response was YES. [2024-06-03 20:02:43,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12500 conditions, 1634 events. 889/1634 cut-off events. For 367043/367043 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9369 event pairs, 128 based on Foata normal form. 8/1642 useless extension candidates. Maximal degree in co-relation 12355. Up to 1100 conditions per place. [2024-06-03 20:02:43,970 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 230 selfloop transitions, 100 changer transitions 11/343 dead transitions. [2024-06-03 20:02:43,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 343 transitions, 4416 flow [2024-06-03 20:02:43,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:43,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-03 20:02:43,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 20:02:43,971 INFO L175 Difference]: Start difference. First operand has 359 places, 312 transitions, 3404 flow. Second operand 12 states and 152 transitions. [2024-06-03 20:02:43,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 343 transitions, 4416 flow [2024-06-03 20:02:45,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 343 transitions, 4231 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:45,561 INFO L231 Difference]: Finished difference. Result has 358 places, 309 transitions, 3388 flow [2024-06-03 20:02:45,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3221, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3388, PETRI_PLACES=358, PETRI_TRANSITIONS=309} [2024-06-03 20:02:45,561 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-03 20:02:45,561 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 309 transitions, 3388 flow [2024-06-03 20:02:45,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:45,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:45,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:45,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-03 20:02:45,562 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:45,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash 957456028, now seen corresponding path program 23 times [2024-06-03 20:02:45,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:45,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823927584] [2024-06-03 20:02:45,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:45,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:46,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:46,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823927584] [2024-06-03 20:02:46,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823927584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:46,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:46,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:46,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326527167] [2024-06-03 20:02:46,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:46,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:46,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:46,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:46,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:46,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:46,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 309 transitions, 3388 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:46,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:46,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:46,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:47,305 INFO L124 PetriNetUnfolderBase]: 879/1616 cut-off events. [2024-06-03 20:02:47,305 INFO L125 PetriNetUnfolderBase]: For 366711/366711 co-relation queries the response was YES. [2024-06-03 20:02:47,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12478 conditions, 1616 events. 879/1616 cut-off events. For 366711/366711 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9227 event pairs, 122 based on Foata normal form. 8/1624 useless extension candidates. Maximal degree in co-relation 12333. Up to 1100 conditions per place. [2024-06-03 20:02:47,323 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 229 selfloop transitions, 100 changer transitions 8/339 dead transitions. [2024-06-03 20:02:47,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 339 transitions, 4390 flow [2024-06-03 20:02:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:47,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-03 20:02:47,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-03 20:02:47,324 INFO L175 Difference]: Start difference. First operand has 358 places, 309 transitions, 3388 flow. Second operand 12 states and 149 transitions. [2024-06-03 20:02:47,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 339 transitions, 4390 flow [2024-06-03 20:02:49,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 339 transitions, 4113 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 20:02:49,010 INFO L231 Difference]: Finished difference. Result has 354 places, 307 transitions, 3290 flow [2024-06-03 20:02:49,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3115, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3290, PETRI_PLACES=354, PETRI_TRANSITIONS=307} [2024-06-03 20:02:49,010 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-03 20:02:49,010 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 307 transitions, 3290 flow [2024-06-03 20:02:49,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:49,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:49,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:49,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-03 20:02:49,011 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:49,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:49,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1358093474, now seen corresponding path program 24 times [2024-06-03 20:02:49,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:49,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782236190] [2024-06-03 20:02:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:49,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:49,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:49,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782236190] [2024-06-03 20:02:49,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782236190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:49,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:49,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:49,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653736616] [2024-06-03 20:02:49,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:49,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:49,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:49,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:49,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:50,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:50,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 307 transitions, 3290 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:50,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:50,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:50,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:50,720 INFO L124 PetriNetUnfolderBase]: 852/1563 cut-off events. [2024-06-03 20:02:50,720 INFO L125 PetriNetUnfolderBase]: For 320803/320803 co-relation queries the response was YES. [2024-06-03 20:02:50,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11056 conditions, 1563 events. 852/1563 cut-off events. For 320803/320803 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8903 event pairs, 139 based on Foata normal form. 12/1575 useless extension candidates. Maximal degree in co-relation 10913. Up to 877 conditions per place. [2024-06-03 20:02:50,734 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 186 selfloop transitions, 132 changer transitions 10/330 dead transitions. [2024-06-03 20:02:50,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 330 transitions, 4038 flow [2024-06-03 20:02:50,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:50,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-03 20:02:50,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-03 20:02:50,734 INFO L175 Difference]: Start difference. First operand has 354 places, 307 transitions, 3290 flow. Second operand 11 states and 136 transitions. [2024-06-03 20:02:50,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 330 transitions, 4038 flow [2024-06-03 20:02:51,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 330 transitions, 3791 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-03 20:02:51,773 INFO L231 Difference]: Finished difference. Result has 351 places, 302 transitions, 3260 flow [2024-06-03 20:02:51,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3043, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3260, PETRI_PLACES=351, PETRI_TRANSITIONS=302} [2024-06-03 20:02:51,773 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-03 20:02:51,773 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 302 transitions, 3260 flow [2024-06-03 20:02:51,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:51,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:51,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:51,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-03 20:02:51,774 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:51,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:51,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1101553948, now seen corresponding path program 25 times [2024-06-03 20:02:51,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:51,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726783588] [2024-06-03 20:02:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:51,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:53,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:53,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726783588] [2024-06-03 20:02:53,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726783588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:53,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:53,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:53,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948428903] [2024-06-03 20:02:53,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:53,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:53,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:53,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:53,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:53,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:53,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 302 transitions, 3260 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:53,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:53,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:53,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:53,871 INFO L124 PetriNetUnfolderBase]: 839/1537 cut-off events. [2024-06-03 20:02:53,871 INFO L125 PetriNetUnfolderBase]: For 308112/308112 co-relation queries the response was YES. [2024-06-03 20:02:53,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10925 conditions, 1537 events. 839/1537 cut-off events. For 308112/308112 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8692 event pairs, 141 based on Foata normal form. 10/1547 useless extension candidates. Maximal degree in co-relation 10783. Up to 871 conditions per place. [2024-06-03 20:02:53,887 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 186 selfloop transitions, 129 changer transitions 9/326 dead transitions. [2024-06-03 20:02:53,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 326 transitions, 3984 flow [2024-06-03 20:02:53,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-03 20:02:53,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:02:53,888 INFO L175 Difference]: Start difference. First operand has 351 places, 302 transitions, 3260 flow. Second operand 12 states and 144 transitions. [2024-06-03 20:02:53,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 326 transitions, 3984 flow [2024-06-03 20:02:54,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 326 transitions, 3666 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-03 20:02:54,907 INFO L231 Difference]: Finished difference. Result has 345 places, 299 transitions, 3171 flow [2024-06-03 20:02:54,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2942, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3171, PETRI_PLACES=345, PETRI_TRANSITIONS=299} [2024-06-03 20:02:54,908 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-03 20:02:54,908 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 299 transitions, 3171 flow [2024-06-03 20:02:54,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:54,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:54,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:54,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-03 20:02:54,908 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:54,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:54,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1101346558, now seen corresponding path program 26 times [2024-06-03 20:02:54,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:54,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379093126] [2024-06-03 20:02:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:54,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:55,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:55,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379093126] [2024-06-03 20:02:55,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379093126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:55,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:55,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:55,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578980226] [2024-06-03 20:02:55,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:55,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:55,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:55,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:55,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:56,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:56,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 299 transitions, 3171 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:56,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:56,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:56,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:56,719 INFO L124 PetriNetUnfolderBase]: 854/1574 cut-off events. [2024-06-03 20:02:56,719 INFO L125 PetriNetUnfolderBase]: For 366869/366869 co-relation queries the response was YES. [2024-06-03 20:02:56,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12094 conditions, 1574 events. 854/1574 cut-off events. For 366869/366869 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8969 event pairs, 122 based on Foata normal form. 8/1582 useless extension candidates. Maximal degree in co-relation 11951. Up to 1148 conditions per place. [2024-06-03 20:02:56,736 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 244 selfloop transitions, 75 changer transitions 7/328 dead transitions. [2024-06-03 20:02:56,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 328 transitions, 4147 flow [2024-06-03 20:02:56,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-03 20:02:56,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-03 20:02:56,737 INFO L175 Difference]: Start difference. First operand has 345 places, 299 transitions, 3171 flow. Second operand 12 states and 147 transitions. [2024-06-03 20:02:56,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 328 transitions, 4147 flow [2024-06-03 20:02:58,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 328 transitions, 3883 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:58,285 INFO L231 Difference]: Finished difference. Result has 344 places, 297 transitions, 3040 flow [2024-06-03 20:02:58,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2909, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3040, PETRI_PLACES=344, PETRI_TRANSITIONS=297} [2024-06-03 20:02:58,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-03 20:02:58,285 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 297 transitions, 3040 flow [2024-06-03 20:02:58,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:58,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:58,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:58,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-03 20:02:58,285 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:02:58,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:58,286 INFO L85 PathProgramCache]: Analyzing trace with hash -2141194054, now seen corresponding path program 27 times [2024-06-03 20:02:58,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:58,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923581442] [2024-06-03 20:02:58,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:58,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:59,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:59,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923581442] [2024-06-03 20:02:59,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923581442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:59,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:59,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:59,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891499747] [2024-06-03 20:02:59,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:59,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:59,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:59,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:59,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:59,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:02:59,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 297 transitions, 3040 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:59,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:59,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:02:59,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:00,127 INFO L124 PetriNetUnfolderBase]: 852/1572 cut-off events. [2024-06-03 20:03:00,128 INFO L125 PetriNetUnfolderBase]: For 379904/379904 co-relation queries the response was YES. [2024-06-03 20:03:00,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11930 conditions, 1572 events. 852/1572 cut-off events. For 379904/379904 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8971 event pairs, 127 based on Foata normal form. 10/1582 useless extension candidates. Maximal degree in co-relation 11787. Up to 1208 conditions per place. [2024-06-03 20:03:00,144 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 72 changer transitions 11/320 dead transitions. [2024-06-03 20:03:00,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 320 transitions, 3748 flow [2024-06-03 20:03:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:03:00,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:03:00,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-03 20:03:00,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-03 20:03:00,145 INFO L175 Difference]: Start difference. First operand has 344 places, 297 transitions, 3040 flow. Second operand 12 states and 137 transitions. [2024-06-03 20:03:00,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 320 transitions, 3748 flow [2024-06-03 20:03:01,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 320 transitions, 3596 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:03:01,391 INFO L231 Difference]: Finished difference. Result has 344 places, 294 transitions, 3003 flow [2024-06-03 20:03:01,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2888, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3003, PETRI_PLACES=344, PETRI_TRANSITIONS=294} [2024-06-03 20:03:01,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-03 20:03:01,392 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 294 transitions, 3003 flow [2024-06-03 20:03:01,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:01,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:01,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:01,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-03 20:03:01,392 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:01,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:01,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1959841768, now seen corresponding path program 1 times [2024-06-03 20:03:01,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:01,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440285785] [2024-06-03 20:03:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:01,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:02,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:02,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440285785] [2024-06-03 20:03:02,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440285785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:02,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:02,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:03:02,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928687962] [2024-06-03 20:03:02,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:02,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:03:02,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:02,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:03:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:03:02,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:02,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 294 transitions, 3003 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:02,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:02,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:02,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:03,092 INFO L124 PetriNetUnfolderBase]: 830/1530 cut-off events. [2024-06-03 20:03:03,092 INFO L125 PetriNetUnfolderBase]: For 326212/326212 co-relation queries the response was YES. [2024-06-03 20:03:03,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11813 conditions, 1530 events. 830/1530 cut-off events. For 326212/326212 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8667 event pairs, 154 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 11670. Up to 922 conditions per place. [2024-06-03 20:03:03,154 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 129 changer transitions 0/313 dead transitions. [2024-06-03 20:03:03,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 313 transitions, 3701 flow [2024-06-03 20:03:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:03,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 20:03:03,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:03:03,155 INFO L175 Difference]: Start difference. First operand has 344 places, 294 transitions, 3003 flow. Second operand 11 states and 132 transitions. [2024-06-03 20:03:03,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 313 transitions, 3701 flow [2024-06-03 20:03:04,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 313 transitions, 3555 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 20:03:04,511 INFO L231 Difference]: Finished difference. Result has 342 places, 295 transitions, 3145 flow [2024-06-03 20:03:04,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2857, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3145, PETRI_PLACES=342, PETRI_TRANSITIONS=295} [2024-06-03 20:03:04,511 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-03 20:03:04,511 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 295 transitions, 3145 flow [2024-06-03 20:03:04,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:04,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:04,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:04,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-03 20:03:04,511 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:04,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2133776808, now seen corresponding path program 2 times [2024-06-03 20:03:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:04,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884517146] [2024-06-03 20:03:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:04,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:05,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:05,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884517146] [2024-06-03 20:03:05,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884517146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:05,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:05,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:05,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996989864] [2024-06-03 20:03:05,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:05,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:05,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:05,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:05,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:05,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:05,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 295 transitions, 3145 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:05,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:05,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:05,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:06,376 INFO L124 PetriNetUnfolderBase]: 834/1538 cut-off events. [2024-06-03 20:03:06,376 INFO L125 PetriNetUnfolderBase]: For 326895/326895 co-relation queries the response was YES. [2024-06-03 20:03:06,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12043 conditions, 1538 events. 834/1538 cut-off events. For 326895/326895 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8708 event pairs, 166 based on Foata normal form. 2/1540 useless extension candidates. Maximal degree in co-relation 11900. Up to 930 conditions per place. [2024-06-03 20:03:06,393 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 132 changer transitions 0/313 dead transitions. [2024-06-03 20:03:06,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 313 transitions, 3841 flow [2024-06-03 20:03:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 20:03:06,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 20:03:06,394 INFO L175 Difference]: Start difference. First operand has 342 places, 295 transitions, 3145 flow. Second operand 11 states and 129 transitions. [2024-06-03 20:03:06,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 313 transitions, 3841 flow [2024-06-03 20:03:07,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 313 transitions, 3563 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-03 20:03:07,549 INFO L231 Difference]: Finished difference. Result has 344 places, 296 transitions, 3163 flow [2024-06-03 20:03:07,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2867, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3163, PETRI_PLACES=344, PETRI_TRANSITIONS=296} [2024-06-03 20:03:07,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-03 20:03:07,549 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 296 transitions, 3163 flow [2024-06-03 20:03:07,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:07,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:07,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:07,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-03 20:03:07,550 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:07,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:07,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1954119912, now seen corresponding path program 28 times [2024-06-03 20:03:07,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:07,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630205231] [2024-06-03 20:03:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:07,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:08,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:08,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630205231] [2024-06-03 20:03:08,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630205231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:08,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:08,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:03:08,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062254989] [2024-06-03 20:03:08,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:08,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:03:08,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:08,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:03:08,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:03:08,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:08,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 296 transitions, 3163 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:08,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:08,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:08,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:09,341 INFO L124 PetriNetUnfolderBase]: 846/1566 cut-off events. [2024-06-03 20:03:09,341 INFO L125 PetriNetUnfolderBase]: For 373419/373419 co-relation queries the response was YES. [2024-06-03 20:03:09,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12142 conditions, 1566 events. 846/1566 cut-off events. For 373419/373419 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8962 event pairs, 122 based on Foata normal form. 8/1574 useless extension candidates. Maximal degree in co-relation 11998. Up to 947 conditions per place. [2024-06-03 20:03:09,357 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 86 changer transitions 12/324 dead transitions. [2024-06-03 20:03:09,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 324 transitions, 4129 flow [2024-06-03 20:03:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-03 20:03:09,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-03 20:03:09,358 INFO L175 Difference]: Start difference. First operand has 344 places, 296 transitions, 3163 flow. Second operand 11 states and 139 transitions. [2024-06-03 20:03:09,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 324 transitions, 4129 flow [2024-06-03 20:03:10,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 324 transitions, 3843 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-03 20:03:10,489 INFO L231 Difference]: Finished difference. Result has 346 places, 291 transitions, 2993 flow [2024-06-03 20:03:10,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2877, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2993, PETRI_PLACES=346, PETRI_TRANSITIONS=291} [2024-06-03 20:03:10,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-03 20:03:10,490 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 291 transitions, 2993 flow [2024-06-03 20:03:10,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:10,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:10,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:10,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-03 20:03:10,490 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:10,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:10,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1496621624, now seen corresponding path program 29 times [2024-06-03 20:03:10,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:10,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732751845] [2024-06-03 20:03:10,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:10,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:11,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:11,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732751845] [2024-06-03 20:03:11,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732751845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:11,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:11,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:03:11,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868153883] [2024-06-03 20:03:11,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:11,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:03:11,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:11,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:03:11,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:03:11,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:11,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 291 transitions, 2993 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:11,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:11,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:11,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:12,322 INFO L124 PetriNetUnfolderBase]: 834/1546 cut-off events. [2024-06-03 20:03:12,322 INFO L125 PetriNetUnfolderBase]: For 393105/393105 co-relation queries the response was YES. [2024-06-03 20:03:12,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11920 conditions, 1546 events. 834/1546 cut-off events. For 393105/393105 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8836 event pairs, 126 based on Foata normal form. 10/1556 useless extension candidates. Maximal degree in co-relation 11775. Up to 1127 conditions per place. [2024-06-03 20:03:12,338 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 86 changer transitions 12/314 dead transitions. [2024-06-03 20:03:12,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 314 transitions, 3691 flow [2024-06-03 20:03:12,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:12,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:12,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 20:03:12,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 20:03:12,339 INFO L175 Difference]: Start difference. First operand has 346 places, 291 transitions, 2993 flow. Second operand 11 states and 135 transitions. [2024-06-03 20:03:12,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 314 transitions, 3691 flow [2024-06-03 20:03:13,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 314 transitions, 3529 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 20:03:13,798 INFO L231 Difference]: Finished difference. Result has 343 places, 287 transitions, 2965 flow [2024-06-03 20:03:13,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2831, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2965, PETRI_PLACES=343, PETRI_TRANSITIONS=287} [2024-06-03 20:03:13,798 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-03 20:03:13,798 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 287 transitions, 2965 flow [2024-06-03 20:03:13,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:13,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:13,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:13,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-03 20:03:13,798 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:13,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:13,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1733412348, now seen corresponding path program 30 times [2024-06-03 20:03:13,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:13,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114692035] [2024-06-03 20:03:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:13,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:15,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:15,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:15,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114692035] [2024-06-03 20:03:15,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114692035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:15,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:15,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:15,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034991527] [2024-06-03 20:03:15,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:15,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:15,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:15,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:15,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:15,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:15,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 287 transitions, 2965 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:15,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:15,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:15,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:16,184 INFO L124 PetriNetUnfolderBase]: 824/1532 cut-off events. [2024-06-03 20:03:16,184 INFO L125 PetriNetUnfolderBase]: For 393065/393065 co-relation queries the response was YES. [2024-06-03 20:03:16,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11871 conditions, 1532 events. 824/1532 cut-off events. For 393065/393065 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8761 event pairs, 133 based on Foata normal form. 10/1542 useless extension candidates. Maximal degree in co-relation 11727. Up to 1162 conditions per place. [2024-06-03 20:03:16,201 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 74 changer transitions 9/309 dead transitions. [2024-06-03 20:03:16,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 309 transitions, 3647 flow [2024-06-03 20:03:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:03:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:03:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-03 20:03:16,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 20:03:16,202 INFO L175 Difference]: Start difference. First operand has 343 places, 287 transitions, 2965 flow. Second operand 12 states and 136 transitions. [2024-06-03 20:03:16,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 309 transitions, 3647 flow [2024-06-03 20:03:17,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 309 transitions, 3473 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 20:03:17,605 INFO L231 Difference]: Finished difference. Result has 343 places, 284 transitions, 2910 flow [2024-06-03 20:03:17,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2910, PETRI_PLACES=343, PETRI_TRANSITIONS=284} [2024-06-03 20:03:17,606 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-03 20:03:17,606 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 284 transitions, 2910 flow [2024-06-03 20:03:17,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:17,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:17,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:17,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-03 20:03:17,606 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:17,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:17,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1733135642, now seen corresponding path program 3 times [2024-06-03 20:03:17,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:17,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468778257] [2024-06-03 20:03:17,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:17,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:18,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:18,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468778257] [2024-06-03 20:03:18,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468778257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:18,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:18,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:18,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223767074] [2024-06-03 20:03:18,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:18,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:18,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:18,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:18,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:18,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:18,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 284 transitions, 2910 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:18,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:18,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:18,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:19,477 INFO L124 PetriNetUnfolderBase]: 802/1490 cut-off events. [2024-06-03 20:03:19,477 INFO L125 PetriNetUnfolderBase]: For 337735/337735 co-relation queries the response was YES. [2024-06-03 20:03:19,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11736 conditions, 1490 events. 802/1490 cut-off events. For 337735/337735 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8421 event pairs, 158 based on Foata normal form. 2/1492 useless extension candidates. Maximal degree in co-relation 11592. Up to 857 conditions per place. [2024-06-03 20:03:19,493 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 130 changer transitions 0/304 dead transitions. [2024-06-03 20:03:19,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 304 transitions, 3854 flow [2024-06-03 20:03:19,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:19,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:19,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 20:03:19,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 20:03:19,494 INFO L175 Difference]: Start difference. First operand has 343 places, 284 transitions, 2910 flow. Second operand 11 states and 130 transitions. [2024-06-03 20:03:19,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 304 transitions, 3854 flow [2024-06-03 20:03:20,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 304 transitions, 3700 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 20:03:20,962 INFO L231 Difference]: Finished difference. Result has 341 places, 286 transitions, 3080 flow [2024-06-03 20:03:20,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3080, PETRI_PLACES=341, PETRI_TRANSITIONS=286} [2024-06-03 20:03:20,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-03 20:03:20,963 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 286 transitions, 3080 flow [2024-06-03 20:03:20,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:20,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:20,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:20,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-03 20:03:20,963 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:20,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:20,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1934708988, now seen corresponding path program 31 times [2024-06-03 20:03:20,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:20,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539988468] [2024-06-03 20:03:20,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:20,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:21,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:21,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539988468] [2024-06-03 20:03:21,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539988468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:21,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:21,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:21,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825218048] [2024-06-03 20:03:21,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:21,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:21,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:21,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:21,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:22,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:22,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 286 transitions, 3080 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:22,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:22,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:22,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:22,727 INFO L124 PetriNetUnfolderBase]: 843/1577 cut-off events. [2024-06-03 20:03:22,727 INFO L125 PetriNetUnfolderBase]: For 449551/449551 co-relation queries the response was YES. [2024-06-03 20:03:22,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13294 conditions, 1577 events. 843/1577 cut-off events. For 449551/449551 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9114 event pairs, 142 based on Foata normal form. 8/1585 useless extension candidates. Maximal degree in co-relation 13150. Up to 1137 conditions per place. [2024-06-03 20:03:22,744 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 73 changer transitions 7/314 dead transitions. [2024-06-03 20:03:22,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 314 transitions, 4028 flow [2024-06-03 20:03:22,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:03:22,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:03:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-03 20:03:22,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:03:22,744 INFO L175 Difference]: Start difference. First operand has 341 places, 286 transitions, 3080 flow. Second operand 12 states and 144 transitions. [2024-06-03 20:03:22,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 314 transitions, 4028 flow [2024-06-03 20:03:24,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 314 transitions, 3793 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 20:03:24,235 INFO L231 Difference]: Finished difference. Result has 345 places, 284 transitions, 2970 flow [2024-06-03 20:03:24,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2970, PETRI_PLACES=345, PETRI_TRANSITIONS=284} [2024-06-03 20:03:24,235 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-03 20:03:24,235 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 284 transitions, 2970 flow [2024-06-03 20:03:24,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:24,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:24,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:24,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-03 20:03:24,235 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:24,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:24,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1740554252, now seen corresponding path program 4 times [2024-06-03 20:03:24,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:24,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2905539] [2024-06-03 20:03:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:24,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:25,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:25,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2905539] [2024-06-03 20:03:25,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2905539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:25,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:25,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:25,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318451612] [2024-06-03 20:03:25,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:25,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:25,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:25,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:25,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:25,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:25,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 284 transitions, 2970 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:25,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:25,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:25,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:26,242 INFO L124 PetriNetUnfolderBase]: 822/1534 cut-off events. [2024-06-03 20:03:26,243 INFO L125 PetriNetUnfolderBase]: For 399737/399737 co-relation queries the response was YES. [2024-06-03 20:03:26,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12877 conditions, 1534 events. 822/1534 cut-off events. For 399737/399737 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8779 event pairs, 172 based on Foata normal form. 2/1536 useless extension candidates. Maximal degree in co-relation 12732. Up to 942 conditions per place. [2024-06-03 20:03:26,260 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 122 changer transitions 0/302 dead transitions. [2024-06-03 20:03:26,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 302 transitions, 3622 flow [2024-06-03 20:03:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:26,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 20:03:26,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 20:03:26,261 INFO L175 Difference]: Start difference. First operand has 345 places, 284 transitions, 2970 flow. Second operand 11 states and 130 transitions. [2024-06-03 20:03:26,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 302 transitions, 3622 flow [2024-06-03 20:03:28,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 302 transitions, 3462 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-03 20:03:28,023 INFO L231 Difference]: Finished difference. Result has 344 places, 284 transitions, 3058 flow [2024-06-03 20:03:28,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2810, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3058, PETRI_PLACES=344, PETRI_TRANSITIONS=284} [2024-06-03 20:03:28,024 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-03 20:03:28,024 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 284 transitions, 3058 flow [2024-06-03 20:03:28,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:28,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:28,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:28,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-03 20:03:28,024 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:28,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:28,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1496616044, now seen corresponding path program 32 times [2024-06-03 20:03:28,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:28,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314531553] [2024-06-03 20:03:28,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:28,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:28,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:28,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314531553] [2024-06-03 20:03:28,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314531553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:28,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:28,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:03:28,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102154173] [2024-06-03 20:03:28,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:28,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:03:29,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:29,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:03:29,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:03:29,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:29,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 284 transitions, 3058 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:29,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:29,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:29,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:29,655 INFO L124 PetriNetUnfolderBase]: 834/1562 cut-off events. [2024-06-03 20:03:29,656 INFO L125 PetriNetUnfolderBase]: For 442298/442298 co-relation queries the response was YES. [2024-06-03 20:03:29,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13059 conditions, 1562 events. 834/1562 cut-off events. For 442298/442298 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9025 event pairs, 134 based on Foata normal form. 8/1570 useless extension candidates. Maximal degree in co-relation 12914. Up to 1161 conditions per place. [2024-06-03 20:03:29,672 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 76 changer transitions 15/306 dead transitions. [2024-06-03 20:03:29,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 306 transitions, 3732 flow [2024-06-03 20:03:29,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:29,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 20:03:29,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:03:29,673 INFO L175 Difference]: Start difference. First operand has 344 places, 284 transitions, 3058 flow. Second operand 11 states and 132 transitions. [2024-06-03 20:03:29,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 306 transitions, 3732 flow [2024-06-03 20:03:31,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 306 transitions, 3471 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:03:31,068 INFO L231 Difference]: Finished difference. Result has 345 places, 277 transitions, 2867 flow [2024-06-03 20:03:31,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2867, PETRI_PLACES=345, PETRI_TRANSITIONS=277} [2024-06-03 20:03:31,069 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-03 20:03:31,069 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 277 transitions, 2867 flow [2024-06-03 20:03:31,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:31,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:31,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:31,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-03 20:03:31,069 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:31,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:31,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1501984004, now seen corresponding path program 33 times [2024-06-03 20:03:31,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:31,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531881507] [2024-06-03 20:03:31,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:31,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:32,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:32,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531881507] [2024-06-03 20:03:32,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531881507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:32,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:32,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:32,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887349323] [2024-06-03 20:03:32,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:32,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:32,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:32,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:32,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:32,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:32,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 277 transitions, 2867 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:32,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:32,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:32,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:32,956 INFO L124 PetriNetUnfolderBase]: 797/1487 cut-off events. [2024-06-03 20:03:32,956 INFO L125 PetriNetUnfolderBase]: For 391709/391709 co-relation queries the response was YES. [2024-06-03 20:03:32,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11511 conditions, 1487 events. 797/1487 cut-off events. For 391709/391709 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8471 event pairs, 131 based on Foata normal form. 10/1497 useless extension candidates. Maximal degree in co-relation 11365. Up to 1122 conditions per place. [2024-06-03 20:03:32,971 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 218 selfloop transitions, 68 changer transitions 13/301 dead transitions. [2024-06-03 20:03:32,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 301 transitions, 3541 flow [2024-06-03 20:03:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:03:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:03:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-03 20:03:32,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 20:03:32,972 INFO L175 Difference]: Start difference. First operand has 345 places, 277 transitions, 2867 flow. Second operand 12 states and 140 transitions. [2024-06-03 20:03:32,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 301 transitions, 3541 flow [2024-06-03 20:03:34,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 301 transitions, 3357 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:03:34,556 INFO L231 Difference]: Finished difference. Result has 339 places, 273 transitions, 2774 flow [2024-06-03 20:03:34,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2683, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2774, PETRI_PLACES=339, PETRI_TRANSITIONS=273} [2024-06-03 20:03:34,556 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-03 20:03:34,557 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 273 transitions, 2774 flow [2024-06-03 20:03:34,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:34,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:34,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:34,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-03 20:03:34,557 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:34,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:34,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2141395864, now seen corresponding path program 34 times [2024-06-03 20:03:34,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:34,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41342034] [2024-06-03 20:03:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:34,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:35,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:35,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:35,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41342034] [2024-06-03 20:03:35,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41342034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:35,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:35,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:35,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830826375] [2024-06-03 20:03:35,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:35,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:35,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:35,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:35,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:35,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:35,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 273 transitions, 2774 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:35,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:35,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:35,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:36,398 INFO L124 PetriNetUnfolderBase]: 781/1459 cut-off events. [2024-06-03 20:03:36,398 INFO L125 PetriNetUnfolderBase]: For 377211/377211 co-relation queries the response was YES. [2024-06-03 20:03:36,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11083 conditions, 1459 events. 781/1459 cut-off events. For 377211/377211 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8259 event pairs, 125 based on Foata normal form. 10/1469 useless extension candidates. Maximal degree in co-relation 10937. Up to 1094 conditions per place. [2024-06-03 20:03:36,413 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 68 changer transitions 11/295 dead transitions. [2024-06-03 20:03:36,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 295 transitions, 3428 flow [2024-06-03 20:03:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:03:36,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:03:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-03 20:03:36,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-03 20:03:36,414 INFO L175 Difference]: Start difference. First operand has 339 places, 273 transitions, 2774 flow. Second operand 12 states and 135 transitions. [2024-06-03 20:03:36,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 295 transitions, 3428 flow [2024-06-03 20:03:37,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 295 transitions, 3290 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 20:03:37,676 INFO L231 Difference]: Finished difference. Result has 336 places, 270 transitions, 2741 flow [2024-06-03 20:03:37,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2636, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2741, PETRI_PLACES=336, PETRI_TRANSITIONS=270} [2024-06-03 20:03:37,676 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-03 20:03:37,676 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 270 transitions, 2741 flow [2024-06-03 20:03:37,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:37,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:37,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:37,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-03 20:03:37,677 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:37,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:37,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2141401444, now seen corresponding path program 35 times [2024-06-03 20:03:37,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:37,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221983640] [2024-06-03 20:03:37,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:37,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221983640] [2024-06-03 20:03:39,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221983640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:39,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:39,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:39,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645355547] [2024-06-03 20:03:39,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:39,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:39,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:39,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:39,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:39,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:39,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 270 transitions, 2741 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:39,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:39,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:39,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:39,929 INFO L124 PetriNetUnfolderBase]: 747/1393 cut-off events. [2024-06-03 20:03:39,929 INFO L125 PetriNetUnfolderBase]: For 305144/305144 co-relation queries the response was YES. [2024-06-03 20:03:39,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9916 conditions, 1393 events. 747/1393 cut-off events. For 305144/305144 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7803 event pairs, 130 based on Foata normal form. 8/1401 useless extension candidates. Maximal degree in co-relation 9770. Up to 784 conditions per place. [2024-06-03 20:03:39,943 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 111 changer transitions 10/293 dead transitions. [2024-06-03 20:03:39,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 293 transitions, 3389 flow [2024-06-03 20:03:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:03:39,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:03:39,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-03 20:03:39,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-03 20:03:39,944 INFO L175 Difference]: Start difference. First operand has 336 places, 270 transitions, 2741 flow. Second operand 12 states and 139 transitions. [2024-06-03 20:03:39,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 293 transitions, 3389 flow [2024-06-03 20:03:40,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 293 transitions, 3251 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 20:03:40,908 INFO L231 Difference]: Finished difference. Result has 335 places, 267 transitions, 2793 flow [2024-06-03 20:03:40,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2793, PETRI_PLACES=335, PETRI_TRANSITIONS=267} [2024-06-03 20:03:40,908 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-03 20:03:40,908 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 267 transitions, 2793 flow [2024-06-03 20:03:40,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:40,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:40,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:40,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-03 20:03:40,908 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:40,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1959833832, now seen corresponding path program 36 times [2024-06-03 20:03:40,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:40,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129516828] [2024-06-03 20:03:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:40,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:42,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:42,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129516828] [2024-06-03 20:03:42,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129516828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:42,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:42,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:42,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779622776] [2024-06-03 20:03:42,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:42,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:42,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:42,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:42,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:42,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:42,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 267 transitions, 2793 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:42,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:42,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:42,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:42,998 INFO L124 PetriNetUnfolderBase]: 744/1388 cut-off events. [2024-06-03 20:03:42,998 INFO L125 PetriNetUnfolderBase]: For 319842/319842 co-relation queries the response was YES. [2024-06-03 20:03:43,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9994 conditions, 1388 events. 744/1388 cut-off events. For 319842/319842 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7779 event pairs, 128 based on Foata normal form. 10/1398 useless extension candidates. Maximal degree in co-relation 9848. Up to 784 conditions per place. [2024-06-03 20:03:43,013 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 173 selfloop transitions, 107 changer transitions 9/291 dead transitions. [2024-06-03 20:03:43,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 291 transitions, 3447 flow [2024-06-03 20:03:43,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:03:43,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:03:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-03 20:03:43,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-03 20:03:43,029 INFO L175 Difference]: Start difference. First operand has 335 places, 267 transitions, 2793 flow. Second operand 12 states and 142 transitions. [2024-06-03 20:03:43,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 291 transitions, 3447 flow [2024-06-03 20:03:44,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 291 transitions, 3191 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 20:03:44,041 INFO L231 Difference]: Finished difference. Result has 332 places, 264 transitions, 2718 flow [2024-06-03 20:03:44,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2537, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2718, PETRI_PLACES=332, PETRI_TRANSITIONS=264} [2024-06-03 20:03:44,041 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-03 20:03:44,042 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 264 transitions, 2718 flow [2024-06-03 20:03:44,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:44,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:44,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:44,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-03 20:03:44,042 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:44,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:44,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1934703408, now seen corresponding path program 37 times [2024-06-03 20:03:44,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:44,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949358739] [2024-06-03 20:03:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:44,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:45,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:45,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949358739] [2024-06-03 20:03:45,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949358739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:45,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:45,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:45,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098337272] [2024-06-03 20:03:45,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:45,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:45,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:45,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:45,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:45,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:45,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 264 transitions, 2718 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:45,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:45,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:45,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:45,928 INFO L124 PetriNetUnfolderBase]: 705/1315 cut-off events. [2024-06-03 20:03:45,928 INFO L125 PetriNetUnfolderBase]: For 247774/247774 co-relation queries the response was YES. [2024-06-03 20:03:45,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8466 conditions, 1315 events. 705/1315 cut-off events. For 247774/247774 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7316 event pairs, 94 based on Foata normal form. 10/1325 useless extension candidates. Maximal degree in co-relation 8321. Up to 950 conditions per place. [2024-06-03 20:03:45,940 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 63 changer transitions 13/287 dead transitions. [2024-06-03 20:03:45,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 287 transitions, 3360 flow [2024-06-03 20:03:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:03:45,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:03:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-03 20:03:45,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 20:03:45,941 INFO L175 Difference]: Start difference. First operand has 332 places, 264 transitions, 2718 flow. Second operand 12 states and 136 transitions. [2024-06-03 20:03:45,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 287 transitions, 3360 flow [2024-06-03 20:03:46,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 287 transitions, 3142 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-03 20:03:46,789 INFO L231 Difference]: Finished difference. Result has 331 places, 260 transitions, 2583 flow [2024-06-03 20:03:46,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2500, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2583, PETRI_PLACES=331, PETRI_TRANSITIONS=260} [2024-06-03 20:03:46,789 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-03 20:03:46,789 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 260 transitions, 2583 flow [2024-06-03 20:03:46,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:46,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:46,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:46,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-03 20:03:46,790 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:46,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:46,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1591497888, now seen corresponding path program 38 times [2024-06-03 20:03:46,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:46,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583367242] [2024-06-03 20:03:46,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:46,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:47,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:47,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583367242] [2024-06-03 20:03:47,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583367242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:47,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:47,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:47,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497385628] [2024-06-03 20:03:47,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:47,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:47,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:47,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:47,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:48,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:48,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 260 transitions, 2583 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:48,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:48,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:48,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:48,606 INFO L124 PetriNetUnfolderBase]: 692/1292 cut-off events. [2024-06-03 20:03:48,606 INFO L125 PetriNetUnfolderBase]: For 233058/233058 co-relation queries the response was YES. [2024-06-03 20:03:48,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8226 conditions, 1292 events. 692/1292 cut-off events. For 233058/233058 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7123 event pairs, 127 based on Foata normal form. 8/1300 useless extension candidates. Maximal degree in co-relation 8081. Up to 449 conditions per place. [2024-06-03 20:03:48,618 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 156 selfloop transitions, 114 changer transitions 16/288 dead transitions. [2024-06-03 20:03:48,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 288 transitions, 3481 flow [2024-06-03 20:03:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:03:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:03:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-03 20:03:48,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-03 20:03:48,619 INFO L175 Difference]: Start difference. First operand has 331 places, 260 transitions, 2583 flow. Second operand 12 states and 139 transitions. [2024-06-03 20:03:48,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 288 transitions, 3481 flow [2024-06-03 20:03:49,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 288 transitions, 3263 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:03:49,379 INFO L231 Difference]: Finished difference. Result has 325 places, 256 transitions, 2575 flow [2024-06-03 20:03:49,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2575, PETRI_PLACES=325, PETRI_TRANSITIONS=256} [2024-06-03 20:03:49,379 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-03 20:03:49,379 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 256 transitions, 2575 flow [2024-06-03 20:03:49,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:49,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:49,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:49,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-03 20:03:49,380 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:49,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1519679272, now seen corresponding path program 39 times [2024-06-03 20:03:49,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:49,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261711420] [2024-06-03 20:03:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:49,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:50,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261711420] [2024-06-03 20:03:50,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261711420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:50,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:50,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:03:50,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537671252] [2024-06-03 20:03:50,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:50,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:03:50,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:50,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:03:50,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:03:50,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:50,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 256 transitions, 2575 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:50,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:50,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:50,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:50,877 INFO L124 PetriNetUnfolderBase]: 735/1389 cut-off events. [2024-06-03 20:03:50,877 INFO L125 PetriNetUnfolderBase]: For 388523/388523 co-relation queries the response was YES. [2024-06-03 20:03:50,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11221 conditions, 1389 events. 735/1389 cut-off events. For 388523/388523 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7792 event pairs, 150 based on Foata normal form. 8/1397 useless extension candidates. Maximal degree in co-relation 11076. Up to 539 conditions per place. [2024-06-03 20:03:50,892 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 154 selfloop transitions, 109 changer transitions 15/280 dead transitions. [2024-06-03 20:03:50,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 280 transitions, 3443 flow [2024-06-03 20:03:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:50,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-03 20:03:50,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 20:03:50,892 INFO L175 Difference]: Start difference. First operand has 325 places, 256 transitions, 2575 flow. Second operand 10 states and 125 transitions. [2024-06-03 20:03:50,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 280 transitions, 3443 flow [2024-06-03 20:03:52,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 280 transitions, 3308 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 20:03:52,361 INFO L231 Difference]: Finished difference. Result has 319 places, 251 transitions, 2632 flow [2024-06-03 20:03:52,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2632, PETRI_PLACES=319, PETRI_TRANSITIONS=251} [2024-06-03 20:03:52,362 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-03 20:03:52,362 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 251 transitions, 2632 flow [2024-06-03 20:03:52,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:52,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:52,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:52,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-03 20:03:52,362 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:52,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:52,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1462705640, now seen corresponding path program 40 times [2024-06-03 20:03:52,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:52,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840849357] [2024-06-03 20:03:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:52,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:53,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:53,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840849357] [2024-06-03 20:03:53,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840849357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:53,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:53,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:03:53,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249594994] [2024-06-03 20:03:53,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:53,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:03:53,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:53,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:03:53,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:03:53,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:53,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 251 transitions, 2632 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:53,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:53,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:53,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:53,909 INFO L124 PetriNetUnfolderBase]: 746/1418 cut-off events. [2024-06-03 20:03:53,909 INFO L125 PetriNetUnfolderBase]: For 438430/438430 co-relation queries the response was YES. [2024-06-03 20:03:53,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12464 conditions, 1418 events. 746/1418 cut-off events. For 438430/438430 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8051 event pairs, 155 based on Foata normal form. 8/1426 useless extension candidates. Maximal degree in co-relation 12322. Up to 734 conditions per place. [2024-06-03 20:03:53,924 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 145 selfloop transitions, 117 changer transitions 11/275 dead transitions. [2024-06-03 20:03:53,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 275 transitions, 3486 flow [2024-06-03 20:03:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:53,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-03 20:03:53,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-03 20:03:53,925 INFO L175 Difference]: Start difference. First operand has 319 places, 251 transitions, 2632 flow. Second operand 10 states and 129 transitions. [2024-06-03 20:03:53,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 275 transitions, 3486 flow [2024-06-03 20:03:55,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 275 transitions, 3252 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-03 20:03:55,346 INFO L231 Difference]: Finished difference. Result has 313 places, 248 transitions, 2621 flow [2024-06-03 20:03:55,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2406, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2621, PETRI_PLACES=313, PETRI_TRANSITIONS=248} [2024-06-03 20:03:55,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-03 20:03:55,346 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 248 transitions, 2621 flow [2024-06-03 20:03:55,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:55,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:55,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:55,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-03 20:03:55,347 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:55,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:55,347 INFO L85 PathProgramCache]: Analyzing trace with hash -451555288, now seen corresponding path program 41 times [2024-06-03 20:03:55,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:55,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956976464] [2024-06-03 20:03:55,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:55,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:56,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:56,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956976464] [2024-06-03 20:03:56,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956976464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:56,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:56,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:56,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907473806] [2024-06-03 20:03:56,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:56,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:56,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:56,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:56,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:56,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 248 transitions, 2621 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:56,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:56,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:56,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:57,063 INFO L124 PetriNetUnfolderBase]: 720/1360 cut-off events. [2024-06-03 20:03:57,064 INFO L125 PetriNetUnfolderBase]: For 340653/340653 co-relation queries the response was YES. [2024-06-03 20:03:57,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10857 conditions, 1360 events. 720/1360 cut-off events. For 340653/340653 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7639 event pairs, 121 based on Foata normal form. 8/1368 useless extension candidates. Maximal degree in co-relation 10718. Up to 708 conditions per place. [2024-06-03 20:03:57,078 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 148 selfloop transitions, 121 changer transitions 8/279 dead transitions. [2024-06-03 20:03:57,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 279 transitions, 3536 flow [2024-06-03 20:03:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 20:03:57,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 20:03:57,078 INFO L175 Difference]: Start difference. First operand has 313 places, 248 transitions, 2621 flow. Second operand 11 states and 128 transitions. [2024-06-03 20:03:57,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 279 transitions, 3536 flow [2024-06-03 20:03:58,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 279 transitions, 3284 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 20:03:58,616 INFO L231 Difference]: Finished difference. Result has 312 places, 251 transitions, 2659 flow [2024-06-03 20:03:58,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2381, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2659, PETRI_PLACES=312, PETRI_TRANSITIONS=251} [2024-06-03 20:03:58,617 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-03 20:03:58,617 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 251 transitions, 2659 flow [2024-06-03 20:03:58,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:58,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:58,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:58,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-03 20:03:58,617 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:03:58,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:58,617 INFO L85 PathProgramCache]: Analyzing trace with hash 358790884, now seen corresponding path program 42 times [2024-06-03 20:03:58,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:58,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951075575] [2024-06-03 20:03:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:58,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:59,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:59,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:59,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951075575] [2024-06-03 20:03:59,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951075575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:59,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:59,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:59,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431945937] [2024-06-03 20:03:59,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:59,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:59,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:59,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:59,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:59,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:03:59,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 251 transitions, 2659 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:03:59,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:59,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:03:59,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:00,248 INFO L124 PetriNetUnfolderBase]: 660/1240 cut-off events. [2024-06-03 20:04:00,248 INFO L125 PetriNetUnfolderBase]: For 216035/216035 co-relation queries the response was YES. [2024-06-03 20:04:00,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8236 conditions, 1240 events. 660/1240 cut-off events. For 216035/216035 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6820 event pairs, 99 based on Foata normal form. 10/1250 useless extension candidates. Maximal degree in co-relation 8097. Up to 649 conditions per place. [2024-06-03 20:04:00,260 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 135 selfloop transitions, 116 changer transitions 19/272 dead transitions. [2024-06-03 20:04:00,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 272 transitions, 3267 flow [2024-06-03 20:04:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:00,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-03 20:04:00,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-03 20:04:00,261 INFO L175 Difference]: Start difference. First operand has 312 places, 251 transitions, 2659 flow. Second operand 11 states and 122 transitions. [2024-06-03 20:04:00,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 272 transitions, 3267 flow [2024-06-03 20:04:00,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 272 transitions, 3023 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 20:04:00,797 INFO L231 Difference]: Finished difference. Result has 315 places, 246 transitions, 2603 flow [2024-06-03 20:04:00,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2603, PETRI_PLACES=315, PETRI_TRANSITIONS=246} [2024-06-03 20:04:00,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2024-06-03 20:04:00,798 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 246 transitions, 2603 flow [2024-06-03 20:04:00,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:00,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:00,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:00,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-03 20:04:00,798 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:00,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2085633286, now seen corresponding path program 43 times [2024-06-03 20:04:00,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:00,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690460446] [2024-06-03 20:04:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:00,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:02,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:02,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690460446] [2024-06-03 20:04:02,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690460446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:02,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:02,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:02,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537791064] [2024-06-03 20:04:02,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:02,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:02,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:02,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:02,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:02,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:02,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 246 transitions, 2603 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:02,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:02,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:02,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:02,734 INFO L124 PetriNetUnfolderBase]: 649/1219 cut-off events. [2024-06-03 20:04:02,735 INFO L125 PetriNetUnfolderBase]: For 216219/216219 co-relation queries the response was YES. [2024-06-03 20:04:02,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8126 conditions, 1219 events. 649/1219 cut-off events. For 216219/216219 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6692 event pairs, 80 based on Foata normal form. 10/1229 useless extension candidates. Maximal degree in co-relation 7987. Up to 831 conditions per place. [2024-06-03 20:04:02,747 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 78 changer transitions 10/266 dead transitions. [2024-06-03 20:04:02,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 266 transitions, 3191 flow [2024-06-03 20:04:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:04:02,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:04:02,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-03 20:04:02,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-03 20:04:02,747 INFO L175 Difference]: Start difference. First operand has 315 places, 246 transitions, 2603 flow. Second operand 12 states and 133 transitions. [2024-06-03 20:04:02,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 266 transitions, 3191 flow [2024-06-03 20:04:03,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 266 transitions, 2951 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:03,351 INFO L231 Difference]: Finished difference. Result has 309 places, 243 transitions, 2499 flow [2024-06-03 20:04:03,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2499, PETRI_PLACES=309, PETRI_TRANSITIONS=243} [2024-06-03 20:04:03,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-03 20:04:03,351 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 243 transitions, 2499 flow [2024-06-03 20:04:03,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:03,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:03,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:03,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-03 20:04:03,351 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:03,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:03,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1398791608, now seen corresponding path program 44 times [2024-06-03 20:04:03,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:03,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119170885] [2024-06-03 20:04:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:03,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:04,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:04,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119170885] [2024-06-03 20:04:04,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119170885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:04,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:04,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:04,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434191192] [2024-06-03 20:04:04,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:04,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:04,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:04,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:04,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:04,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:04,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 243 transitions, 2499 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:04,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:04,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:04,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:05,252 INFO L124 PetriNetUnfolderBase]: 639/1205 cut-off events. [2024-06-03 20:04:05,252 INFO L125 PetriNetUnfolderBase]: For 211558/211558 co-relation queries the response was YES. [2024-06-03 20:04:05,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7936 conditions, 1205 events. 639/1205 cut-off events. For 211558/211558 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6601 event pairs, 91 based on Foata normal form. 10/1215 useless extension candidates. Maximal degree in co-relation 7800. Up to 840 conditions per place. [2024-06-03 20:04:05,263 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 72 changer transitions 12/262 dead transitions. [2024-06-03 20:04:05,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 262 transitions, 3077 flow [2024-06-03 20:04:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:05,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:05,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-03 20:04:05,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-03 20:04:05,264 INFO L175 Difference]: Start difference. First operand has 309 places, 243 transitions, 2499 flow. Second operand 11 states and 124 transitions. [2024-06-03 20:04:05,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 262 transitions, 3077 flow [2024-06-03 20:04:06,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 262 transitions, 2911 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-03 20:04:06,020 INFO L231 Difference]: Finished difference. Result has 306 places, 240 transitions, 2454 flow [2024-06-03 20:04:06,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2454, PETRI_PLACES=306, PETRI_TRANSITIONS=240} [2024-06-03 20:04:06,020 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-03 20:04:06,020 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 240 transitions, 2454 flow [2024-06-03 20:04:06,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:06,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:06,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:06,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-03 20:04:06,021 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:06,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:06,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1386313780, now seen corresponding path program 45 times [2024-06-03 20:04:06,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:06,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850324551] [2024-06-03 20:04:06,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:06,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:07,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:07,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850324551] [2024-06-03 20:04:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850324551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:07,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:07,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:07,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367937070] [2024-06-03 20:04:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:07,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:07,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:07,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:07,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 240 transitions, 2454 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:07,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:07,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:07,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:07,925 INFO L124 PetriNetUnfolderBase]: 627/1185 cut-off events. [2024-06-03 20:04:07,925 INFO L125 PetriNetUnfolderBase]: For 196051/196051 co-relation queries the response was YES. [2024-06-03 20:04:07,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7787 conditions, 1185 events. 627/1185 cut-off events. For 196051/196051 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6479 event pairs, 85 based on Foata normal form. 8/1193 useless extension candidates. Maximal degree in co-relation 7652. Up to 830 conditions per place. [2024-06-03 20:04:07,937 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 70 changer transitions 12/258 dead transitions. [2024-06-03 20:04:07,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 258 transitions, 3016 flow [2024-06-03 20:04:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 20:04:07,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 20:04:07,937 INFO L175 Difference]: Start difference. First operand has 306 places, 240 transitions, 2454 flow. Second operand 11 states and 121 transitions. [2024-06-03 20:04:07,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 258 transitions, 3016 flow [2024-06-03 20:04:08,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 258 transitions, 2868 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:04:08,521 INFO L231 Difference]: Finished difference. Result has 304 places, 237 transitions, 2416 flow [2024-06-03 20:04:08,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2306, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2416, PETRI_PLACES=304, PETRI_TRANSITIONS=237} [2024-06-03 20:04:08,521 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-03 20:04:08,521 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 237 transitions, 2416 flow [2024-06-03 20:04:08,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:08,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:08,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:08,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-03 20:04:08,522 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:08,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:08,522 INFO L85 PathProgramCache]: Analyzing trace with hash -2091347206, now seen corresponding path program 46 times [2024-06-03 20:04:08,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:08,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31791914] [2024-06-03 20:04:08,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:08,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:09,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:09,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31791914] [2024-06-03 20:04:09,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31791914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:09,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:09,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:04:09,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319427947] [2024-06-03 20:04:09,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:09,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:04:09,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:09,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:04:09,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:04:09,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:09,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 237 transitions, 2416 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:09,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:09,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:09,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:10,098 INFO L124 PetriNetUnfolderBase]: 649/1231 cut-off events. [2024-06-03 20:04:10,099 INFO L125 PetriNetUnfolderBase]: For 251960/251960 co-relation queries the response was YES. [2024-06-03 20:04:10,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8940 conditions, 1231 events. 649/1231 cut-off events. For 251960/251960 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6767 event pairs, 104 based on Foata normal form. 8/1239 useless extension candidates. Maximal degree in co-relation 8806. Up to 775 conditions per place. [2024-06-03 20:04:10,111 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 70 changer transitions 11/261 dead transitions. [2024-06-03 20:04:10,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 261 transitions, 3226 flow [2024-06-03 20:04:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 20:04:10,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 20:04:10,111 INFO L175 Difference]: Start difference. First operand has 304 places, 237 transitions, 2416 flow. Second operand 10 states and 124 transitions. [2024-06-03 20:04:10,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 261 transitions, 3226 flow [2024-06-03 20:04:10,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 261 transitions, 3072 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 20:04:10,855 INFO L231 Difference]: Finished difference. Result has 299 places, 234 transitions, 2385 flow [2024-06-03 20:04:10,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2385, PETRI_PLACES=299, PETRI_TRANSITIONS=234} [2024-06-03 20:04:10,855 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-03 20:04:10,855 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 234 transitions, 2385 flow [2024-06-03 20:04:10,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:10,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:10,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:10,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-03 20:04:10,856 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:10,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2091203056, now seen corresponding path program 47 times [2024-06-03 20:04:10,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:10,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897567545] [2024-06-03 20:04:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:10,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:12,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:12,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897567545] [2024-06-03 20:04:12,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897567545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:12,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:12,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:04:12,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401381506] [2024-06-03 20:04:12,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:12,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:04:12,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:12,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:04:12,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:04:12,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:12,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 234 transitions, 2385 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:12,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:12,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:12,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:12,593 INFO L124 PetriNetUnfolderBase]: 637/1207 cut-off events. [2024-06-03 20:04:12,593 INFO L125 PetriNetUnfolderBase]: For 247447/247447 co-relation queries the response was YES. [2024-06-03 20:04:12,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8807 conditions, 1207 events. 637/1207 cut-off events. For 247447/247447 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6584 event pairs, 96 based on Foata normal form. 8/1215 useless extension candidates. Maximal degree in co-relation 8674. Up to 775 conditions per place. [2024-06-03 20:04:12,605 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 177 selfloop transitions, 70 changer transitions 8/257 dead transitions. [2024-06-03 20:04:12,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 257 transitions, 3183 flow [2024-06-03 20:04:12,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:12,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 20:04:12,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-03 20:04:12,606 INFO L175 Difference]: Start difference. First operand has 299 places, 234 transitions, 2385 flow. Second operand 10 states and 121 transitions. [2024-06-03 20:04:12,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 257 transitions, 3183 flow [2024-06-03 20:04:13,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 257 transitions, 3034 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:13,560 INFO L231 Difference]: Finished difference. Result has 296 places, 232 transitions, 2367 flow [2024-06-03 20:04:13,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2367, PETRI_PLACES=296, PETRI_TRANSITIONS=232} [2024-06-03 20:04:13,560 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-03 20:04:13,561 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 232 transitions, 2367 flow [2024-06-03 20:04:13,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:13,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:13,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:13,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-03 20:04:13,561 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:13,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:13,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2058071648, now seen corresponding path program 48 times [2024-06-03 20:04:13,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:13,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139888682] [2024-06-03 20:04:13,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:13,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:14,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:14,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139888682] [2024-06-03 20:04:14,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139888682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:14,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:14,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:04:14,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788377855] [2024-06-03 20:04:14,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:14,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:04:14,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:14,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:04:14,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:04:14,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:14,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 232 transitions, 2367 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:14,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:14,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:14,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:15,313 INFO L124 PetriNetUnfolderBase]: 606/1146 cut-off events. [2024-06-03 20:04:15,314 INFO L125 PetriNetUnfolderBase]: For 193561/193561 co-relation queries the response was YES. [2024-06-03 20:04:15,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7523 conditions, 1146 events. 606/1146 cut-off events. For 193561/193561 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6218 event pairs, 121 based on Foata normal form. 10/1156 useless extension candidates. Maximal degree in co-relation 7392. Up to 868 conditions per place. [2024-06-03 20:04:15,322 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 180 selfloop transitions, 55 changer transitions 14/251 dead transitions. [2024-06-03 20:04:15,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 251 transitions, 2929 flow [2024-06-03 20:04:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:15,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-03 20:04:15,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-03 20:04:15,323 INFO L175 Difference]: Start difference. First operand has 296 places, 232 transitions, 2367 flow. Second operand 11 states and 122 transitions. [2024-06-03 20:04:15,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 251 transitions, 2929 flow [2024-06-03 20:04:15,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 251 transitions, 2787 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:15,852 INFO L231 Difference]: Finished difference. Result has 296 places, 227 transitions, 2286 flow [2024-06-03 20:04:15,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2225, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2286, PETRI_PLACES=296, PETRI_TRANSITIONS=227} [2024-06-03 20:04:15,852 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-03 20:04:15,852 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 227 transitions, 2286 flow [2024-06-03 20:04:15,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:15,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:15,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:15,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-03 20:04:15,852 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:15,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash 151638180, now seen corresponding path program 49 times [2024-06-03 20:04:15,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:15,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786243107] [2024-06-03 20:04:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:15,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:16,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:16,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786243107] [2024-06-03 20:04:16,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786243107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:16,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:16,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:16,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007944380] [2024-06-03 20:04:16,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:16,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:16,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:16,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:16,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:17,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:17,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 227 transitions, 2286 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:17,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:17,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:17,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:17,406 INFO L124 PetriNetUnfolderBase]: 596/1128 cut-off events. [2024-06-03 20:04:17,406 INFO L125 PetriNetUnfolderBase]: For 189689/189689 co-relation queries the response was YES. [2024-06-03 20:04:17,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7367 conditions, 1128 events. 596/1128 cut-off events. For 189689/189689 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6051 event pairs, 89 based on Foata normal form. 10/1138 useless extension candidates. Maximal degree in co-relation 7237. Up to 757 conditions per place. [2024-06-03 20:04:17,414 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 164 selfloop transitions, 68 changer transitions 12/246 dead transitions. [2024-06-03 20:04:17,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 246 transitions, 2832 flow [2024-06-03 20:04:17,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:17,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-03 20:04:17,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-03 20:04:17,415 INFO L175 Difference]: Start difference. First operand has 296 places, 227 transitions, 2286 flow. Second operand 11 states and 122 transitions. [2024-06-03 20:04:17,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 246 transitions, 2832 flow [2024-06-03 20:04:17,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 246 transitions, 2728 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:17,956 INFO L231 Difference]: Finished difference. Result has 291 places, 224 transitions, 2296 flow [2024-06-03 20:04:17,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2296, PETRI_PLACES=291, PETRI_TRANSITIONS=224} [2024-06-03 20:04:17,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-03 20:04:17,957 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 224 transitions, 2296 flow [2024-06-03 20:04:17,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:17,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:17,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:17,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-03 20:04:17,957 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:17,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2065236090, now seen corresponding path program 50 times [2024-06-03 20:04:17,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:17,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780198666] [2024-06-03 20:04:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:17,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:19,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:19,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780198666] [2024-06-03 20:04:19,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780198666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:19,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:19,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:19,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585393643] [2024-06-03 20:04:19,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:19,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:19,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:19,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:19,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:19,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:19,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 224 transitions, 2296 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:19,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:19,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:19,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:19,636 INFO L124 PetriNetUnfolderBase]: 584/1108 cut-off events. [2024-06-03 20:04:19,636 INFO L125 PetriNetUnfolderBase]: For 172111/172111 co-relation queries the response was YES. [2024-06-03 20:04:19,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7278 conditions, 1108 events. 584/1108 cut-off events. For 172111/172111 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5916 event pairs, 85 based on Foata normal form. 8/1116 useless extension candidates. Maximal degree in co-relation 7150. Up to 747 conditions per place. [2024-06-03 20:04:19,646 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 160 selfloop transitions, 64 changer transitions 16/242 dead transitions. [2024-06-03 20:04:19,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 242 transitions, 2826 flow [2024-06-03 20:04:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:19,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 20:04:19,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-03 20:04:19,647 INFO L175 Difference]: Start difference. First operand has 291 places, 224 transitions, 2296 flow. Second operand 11 states and 119 transitions. [2024-06-03 20:04:19,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 242 transitions, 2826 flow [2024-06-03 20:04:20,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 242 transitions, 2637 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:04:20,183 INFO L231 Difference]: Finished difference. Result has 290 places, 219 transitions, 2193 flow [2024-06-03 20:04:20,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2193, PETRI_PLACES=290, PETRI_TRANSITIONS=219} [2024-06-03 20:04:20,184 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-03 20:04:20,184 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 219 transitions, 2193 flow [2024-06-03 20:04:20,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:20,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:20,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:20,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-03 20:04:20,184 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:20,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:20,184 INFO L85 PathProgramCache]: Analyzing trace with hash 581227518, now seen corresponding path program 51 times [2024-06-03 20:04:20,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:20,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491437220] [2024-06-03 20:04:20,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:20,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:21,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:21,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491437220] [2024-06-03 20:04:21,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491437220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:21,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:21,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:21,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268150842] [2024-06-03 20:04:21,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:21,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:21,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:21,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:21,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:21,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:21,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 219 transitions, 2193 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:21,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:21,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:21,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:21,889 INFO L124 PetriNetUnfolderBase]: 575/1089 cut-off events. [2024-06-03 20:04:21,889 INFO L125 PetriNetUnfolderBase]: For 171877/171877 co-relation queries the response was YES. [2024-06-03 20:04:21,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7139 conditions, 1089 events. 575/1089 cut-off events. For 171877/171877 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5752 event pairs, 68 based on Foata normal form. 8/1097 useless extension candidates. Maximal degree in co-relation 7012. Up to 303 conditions per place. [2024-06-03 20:04:21,899 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 106 selfloop transitions, 123 changer transitions 15/246 dead transitions. [2024-06-03 20:04:21,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 246 transitions, 2965 flow [2024-06-03 20:04:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:21,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 20:04:21,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-03 20:04:21,900 INFO L175 Difference]: Start difference. First operand has 290 places, 219 transitions, 2193 flow. Second operand 11 states and 131 transitions. [2024-06-03 20:04:21,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 246 transitions, 2965 flow [2024-06-03 20:04:22,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 246 transitions, 2797 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-03 20:04:22,448 INFO L231 Difference]: Finished difference. Result has 280 places, 215 transitions, 2249 flow [2024-06-03 20:04:22,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2033, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2249, PETRI_PLACES=280, PETRI_TRANSITIONS=215} [2024-06-03 20:04:22,449 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-03 20:04:22,449 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 215 transitions, 2249 flow [2024-06-03 20:04:22,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:22,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:22,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:22,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-03 20:04:22,449 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:22,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:22,450 INFO L85 PathProgramCache]: Analyzing trace with hash 730500610, now seen corresponding path program 52 times [2024-06-03 20:04:22,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:22,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285394251] [2024-06-03 20:04:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:22,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:23,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:23,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285394251] [2024-06-03 20:04:23,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285394251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:23,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:23,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:23,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540818654] [2024-06-03 20:04:23,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:23,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:23,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:23,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:23,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:23,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 215 transitions, 2249 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:23,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:23,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:23,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:24,174 INFO L124 PetriNetUnfolderBase]: 586/1112 cut-off events. [2024-06-03 20:04:24,175 INFO L125 PetriNetUnfolderBase]: For 212239/212239 co-relation queries the response was YES. [2024-06-03 20:04:24,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8209 conditions, 1112 events. 586/1112 cut-off events. For 212239/212239 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5926 event pairs, 79 based on Foata normal form. 8/1120 useless extension candidates. Maximal degree in co-relation 8085. Up to 501 conditions per place. [2024-06-03 20:04:24,185 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 107 selfloop transitions, 123 changer transitions 11/243 dead transitions. [2024-06-03 20:04:24,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 243 transitions, 3017 flow [2024-06-03 20:04:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:24,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-03 20:04:24,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-03 20:04:24,186 INFO L175 Difference]: Start difference. First operand has 280 places, 215 transitions, 2249 flow. Second operand 11 states and 136 transitions. [2024-06-03 20:04:24,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 243 transitions, 3017 flow [2024-06-03 20:04:24,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 243 transitions, 2784 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 20:04:24,918 INFO L231 Difference]: Finished difference. Result has 275 places, 212 transitions, 2248 flow [2024-06-03 20:04:24,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2248, PETRI_PLACES=275, PETRI_TRANSITIONS=212} [2024-06-03 20:04:24,918 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-03 20:04:24,919 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 212 transitions, 2248 flow [2024-06-03 20:04:24,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:24,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:24,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:24,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-03 20:04:24,919 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:24,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:24,919 INFO L85 PathProgramCache]: Analyzing trace with hash 730650340, now seen corresponding path program 53 times [2024-06-03 20:04:24,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:24,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217122249] [2024-06-03 20:04:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:24,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:25,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:25,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217122249] [2024-06-03 20:04:25,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217122249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:25,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:25,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:04:25,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867329166] [2024-06-03 20:04:25,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:25,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:04:25,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:25,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:04:25,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:04:26,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:26,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 212 transitions, 2248 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:26,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:26,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:26,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:26,395 INFO L124 PetriNetUnfolderBase]: 577/1097 cut-off events. [2024-06-03 20:04:26,395 INFO L125 PetriNetUnfolderBase]: For 213749/213749 co-relation queries the response was YES. [2024-06-03 20:04:26,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8049 conditions, 1097 events. 577/1097 cut-off events. For 213749/213749 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5835 event pairs, 92 based on Foata normal form. 12/1109 useless extension candidates. Maximal degree in co-relation 7927. Up to 553 conditions per place. [2024-06-03 20:04:26,405 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 110 selfloop transitions, 113 changer transitions 7/232 dead transitions. [2024-06-03 20:04:26,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 232 transitions, 2792 flow [2024-06-03 20:04:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:26,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 20:04:26,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:04:26,406 INFO L175 Difference]: Start difference. First operand has 275 places, 212 transitions, 2248 flow. Second operand 10 states and 120 transitions. [2024-06-03 20:04:26,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 232 transitions, 2792 flow [2024-06-03 20:04:27,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 232 transitions, 2480 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:04:27,098 INFO L231 Difference]: Finished difference. Result has 271 places, 210 transitions, 2167 flow [2024-06-03 20:04:27,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1936, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2167, PETRI_PLACES=271, PETRI_TRANSITIONS=210} [2024-06-03 20:04:27,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-03 20:04:27,098 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 210 transitions, 2167 flow [2024-06-03 20:04:27,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:27,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:27,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:27,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-03 20:04:27,098 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:27,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:27,098 INFO L85 PathProgramCache]: Analyzing trace with hash -79695832, now seen corresponding path program 54 times [2024-06-03 20:04:27,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:27,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659583883] [2024-06-03 20:04:27,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:27,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:28,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:28,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659583883] [2024-06-03 20:04:28,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659583883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:28,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:28,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:04:28,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119418442] [2024-06-03 20:04:28,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:28,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:04:28,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:28,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:04:28,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:04:28,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:28,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 210 transitions, 2167 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:28,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:28,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:28,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:28,560 INFO L124 PetriNetUnfolderBase]: 543/1031 cut-off events. [2024-06-03 20:04:28,560 INFO L125 PetriNetUnfolderBase]: For 149767/149767 co-relation queries the response was YES. [2024-06-03 20:04:28,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6931 conditions, 1031 events. 543/1031 cut-off events. For 149767/149767 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5400 event pairs, 70 based on Foata normal form. 8/1039 useless extension candidates. Maximal degree in co-relation 6811. Up to 497 conditions per place. [2024-06-03 20:04:28,570 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 109 selfloop transitions, 108 changer transitions 11/230 dead transitions. [2024-06-03 20:04:28,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 230 transitions, 2679 flow [2024-06-03 20:04:28,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 20:04:28,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:04:28,571 INFO L175 Difference]: Start difference. First operand has 271 places, 210 transitions, 2167 flow. Second operand 10 states and 120 transitions. [2024-06-03 20:04:28,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 230 transitions, 2679 flow [2024-06-03 20:04:29,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 230 transitions, 2426 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-03 20:04:29,033 INFO L231 Difference]: Finished difference. Result has 271 places, 205 transitions, 2088 flow [2024-06-03 20:04:29,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2088, PETRI_PLACES=271, PETRI_TRANSITIONS=205} [2024-06-03 20:04:29,034 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-03 20:04:29,034 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 205 transitions, 2088 flow [2024-06-03 20:04:29,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:29,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:29,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:29,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-03 20:04:29,034 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:29,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:29,034 INFO L85 PathProgramCache]: Analyzing trace with hash 64402088, now seen corresponding path program 55 times [2024-06-03 20:04:29,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:29,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768279133] [2024-06-03 20:04:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:29,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:30,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:30,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768279133] [2024-06-03 20:04:30,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768279133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:30,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:30,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:30,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192715167] [2024-06-03 20:04:30,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:30,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:30,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:30,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:30,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:30,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 205 transitions, 2088 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:30,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:30,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:30,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:30,954 INFO L124 PetriNetUnfolderBase]: 536/1015 cut-off events. [2024-06-03 20:04:30,955 INFO L125 PetriNetUnfolderBase]: For 158536/158536 co-relation queries the response was YES. [2024-06-03 20:04:30,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6806 conditions, 1015 events. 536/1015 cut-off events. For 158536/158536 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5298 event pairs, 65 based on Foata normal form. 10/1025 useless extension candidates. Maximal degree in co-relation 6685. Up to 651 conditions per place. [2024-06-03 20:04:30,963 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 134 selfloop transitions, 80 changer transitions 11/227 dead transitions. [2024-06-03 20:04:30,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 227 transitions, 2604 flow [2024-06-03 20:04:30,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:04:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:04:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-03 20:04:30,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 20:04:30,964 INFO L175 Difference]: Start difference. First operand has 271 places, 205 transitions, 2088 flow. Second operand 12 states and 132 transitions. [2024-06-03 20:04:30,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 227 transitions, 2604 flow [2024-06-03 20:04:31,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 227 transitions, 2321 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-06-03 20:04:31,314 INFO L231 Difference]: Finished difference. Result has 263 places, 202 transitions, 1941 flow [2024-06-03 20:04:31,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1941, PETRI_PLACES=263, PETRI_TRANSITIONS=202} [2024-06-03 20:04:31,314 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-03 20:04:31,315 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 202 transitions, 1941 flow [2024-06-03 20:04:31,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:31,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:31,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:31,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-03 20:04:31,315 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:31,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1116413992, now seen corresponding path program 56 times [2024-06-03 20:04:31,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:31,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900607807] [2024-06-03 20:04:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:31,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:32,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:32,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900607807] [2024-06-03 20:04:32,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900607807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:32,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:32,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:32,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726910200] [2024-06-03 20:04:32,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:32,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:32,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:32,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:32,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:32,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:32,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 202 transitions, 1941 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:32,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:32,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:32,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:33,037 INFO L124 PetriNetUnfolderBase]: 551/1052 cut-off events. [2024-06-03 20:04:33,037 INFO L125 PetriNetUnfolderBase]: For 195309/195309 co-relation queries the response was YES. [2024-06-03 20:04:33,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7661 conditions, 1052 events. 551/1052 cut-off events. For 195309/195309 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5539 event pairs, 81 based on Foata normal form. 8/1060 useless extension candidates. Maximal degree in co-relation 7542. Up to 598 conditions per place. [2024-06-03 20:04:33,046 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 144 selfloop transitions, 73 changer transitions 7/226 dead transitions. [2024-06-03 20:04:33,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 226 transitions, 2655 flow [2024-06-03 20:04:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:33,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 20:04:33,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 20:04:33,047 INFO L175 Difference]: Start difference. First operand has 263 places, 202 transitions, 1941 flow. Second operand 11 states and 128 transitions. [2024-06-03 20:04:33,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 226 transitions, 2655 flow [2024-06-03 20:04:33,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 226 transitions, 2487 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 20:04:33,556 INFO L231 Difference]: Finished difference. Result has 260 places, 200 transitions, 1910 flow [2024-06-03 20:04:33,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1910, PETRI_PLACES=260, PETRI_TRANSITIONS=200} [2024-06-03 20:04:33,557 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-03 20:04:33,557 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 200 transitions, 1910 flow [2024-06-03 20:04:33,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:33,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:33,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:33,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-03 20:04:33,557 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:33,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:33,557 INFO L85 PathProgramCache]: Analyzing trace with hash 869172910, now seen corresponding path program 57 times [2024-06-03 20:04:33,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:33,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353469277] [2024-06-03 20:04:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:33,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:34,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:34,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353469277] [2024-06-03 20:04:34,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353469277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:34,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:34,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:04:34,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657380146] [2024-06-03 20:04:34,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:34,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:04:34,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:04:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:04:34,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:34,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 200 transitions, 1910 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:34,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:34,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:34,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:35,168 INFO L124 PetriNetUnfolderBase]: 574/1101 cut-off events. [2024-06-03 20:04:35,168 INFO L125 PetriNetUnfolderBase]: For 236393/236393 co-relation queries the response was YES. [2024-06-03 20:04:35,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8676 conditions, 1101 events. 574/1101 cut-off events. For 236393/236393 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5886 event pairs, 92 based on Foata normal form. 8/1109 useless extension candidates. Maximal degree in co-relation 8558. Up to 536 conditions per place. [2024-06-03 20:04:35,177 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 116 changer transitions 7/225 dead transitions. [2024-06-03 20:04:35,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 225 transitions, 2624 flow [2024-06-03 20:04:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 20:04:35,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 20:04:35,178 INFO L175 Difference]: Start difference. First operand has 260 places, 200 transitions, 1910 flow. Second operand 10 states and 124 transitions. [2024-06-03 20:04:35,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 225 transitions, 2624 flow [2024-06-03 20:04:35,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 225 transitions, 2476 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:04:35,827 INFO L231 Difference]: Finished difference. Result has 258 places, 198 transitions, 1985 flow [2024-06-03 20:04:35,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1985, PETRI_PLACES=258, PETRI_TRANSITIONS=198} [2024-06-03 20:04:35,827 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-03 20:04:35,827 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 198 transitions, 1985 flow [2024-06-03 20:04:35,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:35,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:35,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:35,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-03 20:04:35,827 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:35,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:35,828 INFO L85 PathProgramCache]: Analyzing trace with hash 58837898, now seen corresponding path program 58 times [2024-06-03 20:04:35,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:35,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687794335] [2024-06-03 20:04:35,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:35,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:36,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:36,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687794335] [2024-06-03 20:04:36,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687794335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:36,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:36,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:04:36,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500157120] [2024-06-03 20:04:36,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:36,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:04:36,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:36,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:04:36,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:04:36,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:36,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 198 transitions, 1985 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:36,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:36,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:36,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:37,387 INFO L124 PetriNetUnfolderBase]: 543/1040 cut-off events. [2024-06-03 20:04:37,387 INFO L125 PetriNetUnfolderBase]: For 196236/196236 co-relation queries the response was YES. [2024-06-03 20:04:37,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7661 conditions, 1040 events. 543/1040 cut-off events. For 196236/196236 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5506 event pairs, 77 based on Foata normal form. 10/1050 useless extension candidates. Maximal degree in co-relation 7544. Up to 536 conditions per place. [2024-06-03 20:04:37,396 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 90 selfloop transitions, 111 changer transitions 15/218 dead transitions. [2024-06-03 20:04:37,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 218 transitions, 2479 flow [2024-06-03 20:04:37,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:37,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 20:04:37,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 20:04:37,397 INFO L175 Difference]: Start difference. First operand has 258 places, 198 transitions, 1985 flow. Second operand 10 states and 118 transitions. [2024-06-03 20:04:37,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 218 transitions, 2479 flow [2024-06-03 20:04:38,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 218 transitions, 2245 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:38,019 INFO L231 Difference]: Finished difference. Result has 257 places, 192 transitions, 1937 flow [2024-06-03 20:04:38,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1937, PETRI_PLACES=257, PETRI_TRANSITIONS=192} [2024-06-03 20:04:38,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-03 20:04:38,019 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 192 transitions, 1937 flow [2024-06-03 20:04:38,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:38,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:38,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:38,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-03 20:04:38,020 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:38,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:38,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1926760164, now seen corresponding path program 59 times [2024-06-03 20:04:38,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:38,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149136413] [2024-06-03 20:04:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:38,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:39,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:39,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149136413] [2024-06-03 20:04:39,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149136413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:39,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:39,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:39,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901695894] [2024-06-03 20:04:39,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:39,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:39,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:39,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:39,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:39,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:39,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 192 transitions, 1937 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:39,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:39,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:39,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:39,843 INFO L124 PetriNetUnfolderBase]: 530/1021 cut-off events. [2024-06-03 20:04:39,843 INFO L125 PetriNetUnfolderBase]: For 192164/192164 co-relation queries the response was YES. [2024-06-03 20:04:39,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7528 conditions, 1021 events. 530/1021 cut-off events. For 192164/192164 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5375 event pairs, 85 based on Foata normal form. 10/1031 useless extension candidates. Maximal degree in co-relation 7412. Up to 640 conditions per place. [2024-06-03 20:04:39,851 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 70 changer transitions 12/212 dead transitions. [2024-06-03 20:04:39,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 212 transitions, 2419 flow [2024-06-03 20:04:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:39,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 20:04:39,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 20:04:39,852 INFO L175 Difference]: Start difference. First operand has 257 places, 192 transitions, 1937 flow. Second operand 11 states and 125 transitions. [2024-06-03 20:04:39,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 212 transitions, 2419 flow [2024-06-03 20:04:40,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 212 transitions, 2191 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:40,199 INFO L231 Difference]: Finished difference. Result has 253 places, 188 transitions, 1816 flow [2024-06-03 20:04:40,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1816, PETRI_PLACES=253, PETRI_TRANSITIONS=188} [2024-06-03 20:04:40,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-03 20:04:40,199 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 188 transitions, 1816 flow [2024-06-03 20:04:40,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:40,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:40,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:40,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-03 20:04:40,199 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:40,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:40,200 INFO L85 PathProgramCache]: Analyzing trace with hash 58688168, now seen corresponding path program 60 times [2024-06-03 20:04:40,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:40,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593020835] [2024-06-03 20:04:40,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:40,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:41,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:41,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593020835] [2024-06-03 20:04:41,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593020835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:41,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:41,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:04:41,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081952431] [2024-06-03 20:04:41,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:41,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:04:41,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:41,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:04:41,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:04:41,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:41,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 188 transitions, 1816 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:41,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:41,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:41,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:41,763 INFO L124 PetriNetUnfolderBase]: 517/998 cut-off events. [2024-06-03 20:04:41,763 INFO L125 PetriNetUnfolderBase]: For 175612/175612 co-relation queries the response was YES. [2024-06-03 20:04:41,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7242 conditions, 998 events. 517/998 cut-off events. For 175612/175612 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5226 event pairs, 71 based on Foata normal form. 8/1006 useless extension candidates. Maximal degree in co-relation 7128. Up to 262 conditions per place. [2024-06-03 20:04:41,772 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 102 changer transitions 15/211 dead transitions. [2024-06-03 20:04:41,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 211 transitions, 2482 flow [2024-06-03 20:04:41,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 20:04:41,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 20:04:41,773 INFO L175 Difference]: Start difference. First operand has 253 places, 188 transitions, 1816 flow. Second operand 10 states and 118 transitions. [2024-06-03 20:04:41,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 211 transitions, 2482 flow [2024-06-03 20:04:42,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 211 transitions, 2330 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 20:04:42,095 INFO L231 Difference]: Finished difference. Result has 248 places, 180 transitions, 1803 flow [2024-06-03 20:04:42,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1803, PETRI_PLACES=248, PETRI_TRANSITIONS=180} [2024-06-03 20:04:42,097 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-03 20:04:42,097 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 180 transitions, 1803 flow [2024-06-03 20:04:42,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:42,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:42,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:42,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-03 20:04:42,098 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:42,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:42,098 INFO L85 PathProgramCache]: Analyzing trace with hash 728842698, now seen corresponding path program 61 times [2024-06-03 20:04:42,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:42,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502644517] [2024-06-03 20:04:42,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:42,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:43,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:43,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502644517] [2024-06-03 20:04:43,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502644517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:43,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:43,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:43,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511033760] [2024-06-03 20:04:43,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:43,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:43,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:43,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:43,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:43,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:43,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 180 transitions, 1803 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:43,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:43,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:43,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:44,106 INFO L124 PetriNetUnfolderBase]: 504/975 cut-off events. [2024-06-03 20:04:44,106 INFO L125 PetriNetUnfolderBase]: For 176105/176105 co-relation queries the response was YES. [2024-06-03 20:04:44,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7162 conditions, 975 events. 504/975 cut-off events. For 176105/176105 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5087 event pairs, 81 based on Foata normal form. 10/985 useless extension candidates. Maximal degree in co-relation 7050. Up to 610 conditions per place. [2024-06-03 20:04:44,114 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 114 selfloop transitions, 74 changer transitions 11/201 dead transitions. [2024-06-03 20:04:44,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 201 transitions, 2265 flow [2024-06-03 20:04:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-03 20:04:44,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-03 20:04:44,115 INFO L175 Difference]: Start difference. First operand has 248 places, 180 transitions, 1803 flow. Second operand 11 states and 124 transitions. [2024-06-03 20:04:44,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 201 transitions, 2265 flow [2024-06-03 20:04:44,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 201 transitions, 2082 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 20:04:44,413 INFO L231 Difference]: Finished difference. Result has 240 places, 177 transitions, 1744 flow [2024-06-03 20:04:44,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1744, PETRI_PLACES=240, PETRI_TRANSITIONS=177} [2024-06-03 20:04:44,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-03 20:04:44,413 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 177 transitions, 1744 flow [2024-06-03 20:04:44,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:44,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:44,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:44,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-03 20:04:44,414 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:44,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash 728837118, now seen corresponding path program 62 times [2024-06-03 20:04:44,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:44,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688643052] [2024-06-03 20:04:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:45,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:45,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688643052] [2024-06-03 20:04:45,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688643052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:45,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:45,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:45,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947565755] [2024-06-03 20:04:45,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:45,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:45,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:45,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:45,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:45,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:45,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 177 transitions, 1744 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:45,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:45,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:45,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:46,114 INFO L124 PetriNetUnfolderBase]: 492/955 cut-off events. [2024-06-03 20:04:46,114 INFO L125 PetriNetUnfolderBase]: For 149876/149876 co-relation queries the response was YES. [2024-06-03 20:04:46,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6901 conditions, 955 events. 492/955 cut-off events. For 149876/149876 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4956 event pairs, 71 based on Foata normal form. 8/963 useless extension candidates. Maximal degree in co-relation 6794. Up to 600 conditions per place. [2024-06-03 20:04:46,121 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 112 selfloop transitions, 72 changer transitions 11/197 dead transitions. [2024-06-03 20:04:46,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 197 transitions, 2190 flow [2024-06-03 20:04:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 20:04:46,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 20:04:46,122 INFO L175 Difference]: Start difference. First operand has 240 places, 177 transitions, 1744 flow. Second operand 11 states and 121 transitions. [2024-06-03 20:04:46,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 197 transitions, 2190 flow [2024-06-03 20:04:46,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 197 transitions, 2038 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:04:46,419 INFO L231 Difference]: Finished difference. Result has 238 places, 174 transitions, 1713 flow [2024-06-03 20:04:46,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1713, PETRI_PLACES=238, PETRI_TRANSITIONS=174} [2024-06-03 20:04:46,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-03 20:04:46,419 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 174 transitions, 1713 flow [2024-06-03 20:04:46,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:46,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:46,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:46,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-03 20:04:46,419 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:46,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:46,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1926969910, now seen corresponding path program 5 times [2024-06-03 20:04:46,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:46,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503593004] [2024-06-03 20:04:46,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:46,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:47,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:47,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503593004] [2024-06-03 20:04:47,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503593004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:47,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:47,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:04:47,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547965268] [2024-06-03 20:04:47,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:47,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:04:47,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:47,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:04:47,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:04:47,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:47,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 174 transitions, 1713 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:47,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:47,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:47,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:47,872 INFO L124 PetriNetUnfolderBase]: 477/922 cut-off events. [2024-06-03 20:04:47,872 INFO L125 PetriNetUnfolderBase]: For 126028/126028 co-relation queries the response was YES. [2024-06-03 20:04:47,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6808 conditions, 922 events. 477/922 cut-off events. For 126028/126028 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4725 event pairs, 85 based on Foata normal form. 2/924 useless extension candidates. Maximal degree in co-relation 6702. Up to 488 conditions per place. [2024-06-03 20:04:47,878 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 87 changer transitions 0/189 dead transitions. [2024-06-03 20:04:47,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 189 transitions, 2151 flow [2024-06-03 20:04:47,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:47,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 20:04:47,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-03 20:04:47,879 INFO L175 Difference]: Start difference. First operand has 238 places, 174 transitions, 1713 flow. Second operand 10 states and 111 transitions. [2024-06-03 20:04:47,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 189 transitions, 2151 flow [2024-06-03 20:04:48,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 189 transitions, 2001 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:04:48,173 INFO L231 Difference]: Finished difference. Result has 233 places, 175 transitions, 1771 flow [2024-06-03 20:04:48,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1771, PETRI_PLACES=233, PETRI_TRANSITIONS=175} [2024-06-03 20:04:48,173 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-03 20:04:48,173 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 175 transitions, 1771 flow [2024-06-03 20:04:48,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:48,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:48,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:48,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-03 20:04:48,174 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:48,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:48,174 INFO L85 PathProgramCache]: Analyzing trace with hash -352321122, now seen corresponding path program 63 times [2024-06-03 20:04:48,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:48,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740509009] [2024-06-03 20:04:48,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:48,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:49,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:49,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740509009] [2024-06-03 20:04:49,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740509009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:49,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:49,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:49,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689766863] [2024-06-03 20:04:49,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:49,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:49,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:49,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:49,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:49,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:49,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 175 transitions, 1771 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:49,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:49,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:49,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:49,818 INFO L124 PetriNetUnfolderBase]: 493/958 cut-off events. [2024-06-03 20:04:49,818 INFO L125 PetriNetUnfolderBase]: For 146362/146362 co-relation queries the response was YES. [2024-06-03 20:04:49,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6890 conditions, 958 events. 493/958 cut-off events. For 146362/146362 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4982 event pairs, 89 based on Foata normal form. 10/968 useless extension candidates. Maximal degree in co-relation 6786. Up to 482 conditions per place. [2024-06-03 20:04:49,825 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 84 changer transitions 9/195 dead transitions. [2024-06-03 20:04:49,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 195 transitions, 2219 flow [2024-06-03 20:04:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-03 20:04:49,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-03 20:04:49,826 INFO L175 Difference]: Start difference. First operand has 233 places, 175 transitions, 1771 flow. Second operand 11 states and 124 transitions. [2024-06-03 20:04:49,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 195 transitions, 2219 flow [2024-06-03 20:04:50,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 195 transitions, 2023 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:50,074 INFO L231 Difference]: Finished difference. Result has 235 places, 172 transitions, 1719 flow [2024-06-03 20:04:50,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1719, PETRI_PLACES=235, PETRI_TRANSITIONS=172} [2024-06-03 20:04:50,075 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-03 20:04:50,075 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 172 transitions, 1719 flow [2024-06-03 20:04:50,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:50,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:50,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:50,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-03 20:04:50,075 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:50,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:50,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1934379220, now seen corresponding path program 6 times [2024-06-03 20:04:50,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:50,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633031776] [2024-06-03 20:04:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:50,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:51,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:51,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633031776] [2024-06-03 20:04:51,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633031776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:51,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:51,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:51,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055473161] [2024-06-03 20:04:51,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:51,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:51,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:51,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:51,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:51,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:51,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 172 transitions, 1719 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:51,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:51,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:51,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:51,627 INFO L124 PetriNetUnfolderBase]: 471/916 cut-off events. [2024-06-03 20:04:51,627 INFO L125 PetriNetUnfolderBase]: For 120106/120106 co-relation queries the response was YES. [2024-06-03 20:04:51,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6734 conditions, 916 events. 471/916 cut-off events. For 120106/120106 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4705 event pairs, 85 based on Foata normal form. 2/918 useless extension candidates. Maximal degree in co-relation 6630. Up to 490 conditions per place. [2024-06-03 20:04:51,634 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 96 selfloop transitions, 88 changer transitions 0/186 dead transitions. [2024-06-03 20:04:51,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 186 transitions, 2149 flow [2024-06-03 20:04:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:51,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 20:04:51,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-03 20:04:51,634 INFO L175 Difference]: Start difference. First operand has 235 places, 172 transitions, 1719 flow. Second operand 10 states and 109 transitions. [2024-06-03 20:04:51,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 186 transitions, 2149 flow [2024-06-03 20:04:51,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 186 transitions, 1973 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 20:04:51,874 INFO L231 Difference]: Finished difference. Result has 232 places, 173 transitions, 1755 flow [2024-06-03 20:04:51,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1755, PETRI_PLACES=232, PETRI_TRANSITIONS=173} [2024-06-03 20:04:51,874 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-03 20:04:51,874 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 173 transitions, 1755 flow [2024-06-03 20:04:51,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:51,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:51,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:51,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-03 20:04:51,874 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:51,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:51,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1733030500, now seen corresponding path program 7 times [2024-06-03 20:04:51,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:51,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165094347] [2024-06-03 20:04:51,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:51,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:53,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:53,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165094347] [2024-06-03 20:04:53,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165094347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:53,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:53,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:53,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696592898] [2024-06-03 20:04:53,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:53,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:53,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:53,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:53,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:53,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:53,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 173 transitions, 1755 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:53,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:53,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:53,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:53,434 INFO L124 PetriNetUnfolderBase]: 475/924 cut-off events. [2024-06-03 20:04:53,434 INFO L125 PetriNetUnfolderBase]: For 117490/117490 co-relation queries the response was YES. [2024-06-03 20:04:53,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6789 conditions, 924 events. 475/924 cut-off events. For 117490/117490 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4763 event pairs, 87 based on Foata normal form. 2/926 useless extension candidates. Maximal degree in co-relation 6686. Up to 498 conditions per place. [2024-06-03 20:04:53,440 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 82 changer transitions 0/188 dead transitions. [2024-06-03 20:04:53,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 188 transitions, 2195 flow [2024-06-03 20:04:53,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 20:04:53,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-03 20:04:53,441 INFO L175 Difference]: Start difference. First operand has 232 places, 173 transitions, 1755 flow. Second operand 10 states and 112 transitions. [2024-06-03 20:04:53,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 188 transitions, 2195 flow [2024-06-03 20:04:53,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 188 transitions, 1995 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 20:04:53,737 INFO L231 Difference]: Finished difference. Result has 234 places, 174 transitions, 1757 flow [2024-06-03 20:04:53,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1757, PETRI_PLACES=234, PETRI_TRANSITIONS=174} [2024-06-03 20:04:53,738 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-03 20:04:53,738 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 174 transitions, 1757 flow [2024-06-03 20:04:53,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:53,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:53,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:53,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-03 20:04:53,738 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:53,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:53,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1788690348, now seen corresponding path program 8 times [2024-06-03 20:04:53,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:53,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811588411] [2024-06-03 20:04:53,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:53,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:54,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:54,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811588411] [2024-06-03 20:04:54,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811588411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:54,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:54,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:54,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096370382] [2024-06-03 20:04:54,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:54,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:54,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:54,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:54,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:55,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:55,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 174 transitions, 1757 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:55,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:55,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:55,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:55,427 INFO L124 PetriNetUnfolderBase]: 479/932 cut-off events. [2024-06-03 20:04:55,427 INFO L125 PetriNetUnfolderBase]: For 117734/117734 co-relation queries the response was YES. [2024-06-03 20:04:55,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6806 conditions, 932 events. 479/932 cut-off events. For 117734/117734 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4823 event pairs, 79 based on Foata normal form. 2/934 useless extension candidates. Maximal degree in co-relation 6702. Up to 420 conditions per place. [2024-06-03 20:04:55,434 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 98 changer transitions 0/188 dead transitions. [2024-06-03 20:04:55,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 188 transitions, 2191 flow [2024-06-03 20:04:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 20:04:55,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-03 20:04:55,435 INFO L175 Difference]: Start difference. First operand has 234 places, 174 transitions, 1757 flow. Second operand 10 states and 109 transitions. [2024-06-03 20:04:55,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 188 transitions, 2191 flow [2024-06-03 20:04:55,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 188 transitions, 1999 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:55,694 INFO L231 Difference]: Finished difference. Result has 235 places, 175 transitions, 1800 flow [2024-06-03 20:04:55,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1800, PETRI_PLACES=235, PETRI_TRANSITIONS=175} [2024-06-03 20:04:55,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-03 20:04:55,694 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 175 transitions, 1800 flow [2024-06-03 20:04:55,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:55,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:55,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:55,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-03 20:04:55,694 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:55,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:55,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1934111814, now seen corresponding path program 64 times [2024-06-03 20:04:55,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:55,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772541232] [2024-06-03 20:04:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:55,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:57,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:57,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772541232] [2024-06-03 20:04:57,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772541232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:57,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:57,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:57,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556161166] [2024-06-03 20:04:57,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:57,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:57,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:57,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:57,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:57,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:57,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 175 transitions, 1800 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:57,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:57,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:57,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:58,051 INFO L124 PetriNetUnfolderBase]: 466/909 cut-off events. [2024-06-03 20:04:58,051 INFO L125 PetriNetUnfolderBase]: For 110878/110878 co-relation queries the response was YES. [2024-06-03 20:04:58,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5966 conditions, 909 events. 466/909 cut-off events. For 110878/110878 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4694 event pairs, 68 based on Foata normal form. 10/919 useless extension candidates. Maximal degree in co-relation 5862. Up to 545 conditions per place. [2024-06-03 20:04:58,058 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 115 selfloop transitions, 66 changer transitions 11/194 dead transitions. [2024-06-03 20:04:58,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 194 transitions, 2242 flow [2024-06-03 20:04:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:58,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:58,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 20:04:58,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-03 20:04:58,059 INFO L175 Difference]: Start difference. First operand has 235 places, 175 transitions, 1800 flow. Second operand 11 states and 120 transitions. [2024-06-03 20:04:58,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 194 transitions, 2242 flow [2024-06-03 20:04:58,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 194 transitions, 2019 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-03 20:04:58,288 INFO L231 Difference]: Finished difference. Result has 236 places, 172 transitions, 1681 flow [2024-06-03 20:04:58,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1681, PETRI_PLACES=236, PETRI_TRANSITIONS=172} [2024-06-03 20:04:58,288 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-03 20:04:58,288 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 172 transitions, 1681 flow [2024-06-03 20:04:58,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:58,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:58,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:58,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-03 20:04:58,289 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:04:58,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:58,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1732815174, now seen corresponding path program 65 times [2024-06-03 20:04:58,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:58,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010301420] [2024-06-03 20:04:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:58,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:59,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:59,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:59,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010301420] [2024-06-03 20:04:59,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010301420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:59,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:59,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:59,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033702737] [2024-06-03 20:04:59,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:59,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:59,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:59,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:59,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:59,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:04:59,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 172 transitions, 1681 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:04:59,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:59,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:04:59,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:00,189 INFO L124 PetriNetUnfolderBase]: 481/946 cut-off events. [2024-06-03 20:05:00,189 INFO L125 PetriNetUnfolderBase]: For 136174/136174 co-relation queries the response was YES. [2024-06-03 20:05:00,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6653 conditions, 946 events. 481/946 cut-off events. For 136174/136174 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4940 event pairs, 73 based on Foata normal form. 8/954 useless extension candidates. Maximal degree in co-relation 6550. Up to 506 conditions per place. [2024-06-03 20:05:00,197 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 62 changer transitions 7/197 dead transitions. [2024-06-03 20:05:00,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 197 transitions, 2309 flow [2024-06-03 20:05:00,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 20:05:00,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 20:05:00,198 INFO L175 Difference]: Start difference. First operand has 236 places, 172 transitions, 1681 flow. Second operand 11 states and 128 transitions. [2024-06-03 20:05:00,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 197 transitions, 2309 flow [2024-06-03 20:05:00,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 197 transitions, 2169 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:05:00,458 INFO L231 Difference]: Finished difference. Result has 233 places, 170 transitions, 1655 flow [2024-06-03 20:05:00,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1655, PETRI_PLACES=233, PETRI_TRANSITIONS=170} [2024-06-03 20:05:00,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-03 20:05:00,459 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 170 transitions, 1655 flow [2024-06-03 20:05:00,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:00,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:00,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:00,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-03 20:05:00,459 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:00,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:00,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1587122582, now seen corresponding path program 66 times [2024-06-03 20:05:00,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:00,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797624217] [2024-06-03 20:05:00,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:00,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:01,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:01,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797624217] [2024-06-03 20:05:01,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797624217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:01,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:01,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:01,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654773863] [2024-06-03 20:05:01,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:01,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:01,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:01,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:01,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:01,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:01,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 170 transitions, 1655 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:01,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:01,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:01,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:02,432 INFO L124 PetriNetUnfolderBase]: 479/944 cut-off events. [2024-06-03 20:05:02,432 INFO L125 PetriNetUnfolderBase]: For 139130/139130 co-relation queries the response was YES. [2024-06-03 20:05:02,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6590 conditions, 944 events. 479/944 cut-off events. For 139130/139130 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4935 event pairs, 79 based on Foata normal form. 10/954 useless extension candidates. Maximal degree in co-relation 6488. Up to 571 conditions per place. [2024-06-03 20:05:02,440 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 59 changer transitions 12/191 dead transitions. [2024-06-03 20:05:02,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 191 transitions, 2099 flow [2024-06-03 20:05:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:02,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 20:05:02,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 20:05:02,440 INFO L175 Difference]: Start difference. First operand has 233 places, 170 transitions, 1655 flow. Second operand 11 states and 125 transitions. [2024-06-03 20:05:02,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 191 transitions, 2099 flow [2024-06-03 20:05:02,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 191 transitions, 1975 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:05:02,683 INFO L231 Difference]: Finished difference. Result has 232 places, 166 transitions, 1614 flow [2024-06-03 20:05:02,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1614, PETRI_PLACES=232, PETRI_TRANSITIONS=166} [2024-06-03 20:05:02,684 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-03 20:05:02,684 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 166 transitions, 1614 flow [2024-06-03 20:05:02,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:02,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:02,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:02,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-03 20:05:02,684 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:02,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:02,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1733022564, now seen corresponding path program 67 times [2024-06-03 20:05:02,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:02,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767171124] [2024-06-03 20:05:02,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:02,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:03,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:03,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767171124] [2024-06-03 20:05:03,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767171124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:03,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:03,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:03,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614041999] [2024-06-03 20:05:03,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:03,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:03,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:03,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:03,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:04,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:04,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 166 transitions, 1614 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:04,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:04,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:04,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:04,544 INFO L124 PetriNetUnfolderBase]: 441/870 cut-off events. [2024-06-03 20:05:04,544 INFO L125 PetriNetUnfolderBase]: For 105179/105179 co-relation queries the response was YES. [2024-06-03 20:05:04,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5543 conditions, 870 events. 441/870 cut-off events. For 105179/105179 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4456 event pairs, 61 based on Foata normal form. 10/880 useless extension candidates. Maximal degree in co-relation 5442. Up to 506 conditions per place. [2024-06-03 20:05:04,551 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 115 selfloop transitions, 59 changer transitions 11/187 dead transitions. [2024-06-03 20:05:04,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 187 transitions, 2048 flow [2024-06-03 20:05:04,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:04,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-03 20:05:04,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 20:05:04,565 INFO L175 Difference]: Start difference. First operand has 232 places, 166 transitions, 1614 flow. Second operand 12 states and 128 transitions. [2024-06-03 20:05:04,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 187 transitions, 2048 flow [2024-06-03 20:05:04,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 187 transitions, 1924 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 20:05:04,758 INFO L231 Difference]: Finished difference. Result has 229 places, 163 transitions, 1580 flow [2024-06-03 20:05:04,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1580, PETRI_PLACES=229, PETRI_TRANSITIONS=163} [2024-06-03 20:05:04,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-03 20:05:04,758 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 163 transitions, 1580 flow [2024-06-03 20:05:04,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:04,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:04,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:04,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-03 20:05:04,759 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:04,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:04,759 INFO L85 PathProgramCache]: Analyzing trace with hash -305151162, now seen corresponding path program 9 times [2024-06-03 20:05:04,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:04,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874547304] [2024-06-03 20:05:04,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:04,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:05,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:05,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874547304] [2024-06-03 20:05:05,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874547304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:05,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:05,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:05,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496327647] [2024-06-03 20:05:05,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:05,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:05,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:05,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:05,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:06,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:06,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 163 transitions, 1580 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:06,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:06,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:06,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:06,537 INFO L124 PetriNetUnfolderBase]: 419/828 cut-off events. [2024-06-03 20:05:06,537 INFO L125 PetriNetUnfolderBase]: For 77211/77211 co-relation queries the response was YES. [2024-06-03 20:05:06,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5383 conditions, 828 events. 419/828 cut-off events. For 77211/77211 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4217 event pairs, 113 based on Foata normal form. 2/830 useless extension candidates. Maximal degree in co-relation 5284. Up to 751 conditions per place. [2024-06-03 20:05:06,543 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 149 selfloop transitions, 26 changer transitions 0/177 dead transitions. [2024-06-03 20:05:06,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 177 transitions, 1994 flow [2024-06-03 20:05:06,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:05:06,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:05:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 20:05:06,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 20:05:06,544 INFO L175 Difference]: Start difference. First operand has 229 places, 163 transitions, 1580 flow. Second operand 10 states and 105 transitions. [2024-06-03 20:05:06,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 177 transitions, 1994 flow [2024-06-03 20:05:06,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 177 transitions, 1872 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 20:05:06,721 INFO L231 Difference]: Finished difference. Result has 224 places, 164 transitions, 1546 flow [2024-06-03 20:05:06,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1546, PETRI_PLACES=224, PETRI_TRANSITIONS=164} [2024-06-03 20:05:06,721 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-03 20:05:06,721 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 164 transitions, 1546 flow [2024-06-03 20:05:06,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:06,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:06,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:06,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-03 20:05:06,722 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:06,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:06,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1719644022, now seen corresponding path program 10 times [2024-06-03 20:05:06,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:06,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049029792] [2024-06-03 20:05:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:06,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:07,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:07,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049029792] [2024-06-03 20:05:07,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049029792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:07,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:07,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:05:07,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128749261] [2024-06-03 20:05:07,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:07,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:05:07,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:07,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:05:07,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:05:07,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:07,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 164 transitions, 1546 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:07,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:07,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:07,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:08,212 INFO L124 PetriNetUnfolderBase]: 423/836 cut-off events. [2024-06-03 20:05:08,213 INFO L125 PetriNetUnfolderBase]: For 75553/75553 co-relation queries the response was YES. [2024-06-03 20:05:08,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5362 conditions, 836 events. 423/836 cut-off events. For 75553/75553 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4264 event pairs, 117 based on Foata normal form. 2/838 useless extension candidates. Maximal degree in co-relation 5264. Up to 785 conditions per place. [2024-06-03 20:05:08,219 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 155 selfloop transitions, 20 changer transitions 0/177 dead transitions. [2024-06-03 20:05:08,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 177 transitions, 1958 flow [2024-06-03 20:05:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:05:08,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:05:08,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-03 20:05:08,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-03 20:05:08,220 INFO L175 Difference]: Start difference. First operand has 224 places, 164 transitions, 1546 flow. Second operand 10 states and 100 transitions. [2024-06-03 20:05:08,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 177 transitions, 1958 flow [2024-06-03 20:05:08,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 177 transitions, 1880 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 20:05:08,398 INFO L231 Difference]: Finished difference. Result has 226 places, 165 transitions, 1546 flow [2024-06-03 20:05:08,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1546, PETRI_PLACES=226, PETRI_TRANSITIONS=165} [2024-06-03 20:05:08,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-03 20:05:08,398 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 165 transitions, 1546 flow [2024-06-03 20:05:08,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:08,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:08,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:08,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-03 20:05:08,398 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:08,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:08,399 INFO L85 PathProgramCache]: Analyzing trace with hash 636157818, now seen corresponding path program 11 times [2024-06-03 20:05:08,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:08,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589579757] [2024-06-03 20:05:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:08,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:09,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:09,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589579757] [2024-06-03 20:05:09,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589579757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:09,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:09,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:09,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288624102] [2024-06-03 20:05:09,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:09,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:09,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:09,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:09,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:09,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:09,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 165 transitions, 1546 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:09,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:09,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:09,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:10,249 INFO L124 PetriNetUnfolderBase]: 427/844 cut-off events. [2024-06-03 20:05:10,249 INFO L125 PetriNetUnfolderBase]: For 77475/77475 co-relation queries the response was YES. [2024-06-03 20:05:10,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5407 conditions, 844 events. 427/844 cut-off events. For 77475/77475 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4341 event pairs, 108 based on Foata normal form. 2/846 useless extension candidates. Maximal degree in co-relation 5308. Up to 771 conditions per place. [2024-06-03 20:05:10,255 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 150 selfloop transitions, 27 changer transitions 0/179 dead transitions. [2024-06-03 20:05:10,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 179 transitions, 1968 flow [2024-06-03 20:05:10,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:05:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:05:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 20:05:10,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-03 20:05:10,257 INFO L175 Difference]: Start difference. First operand has 226 places, 165 transitions, 1546 flow. Second operand 10 states and 106 transitions. [2024-06-03 20:05:10,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 179 transitions, 1968 flow [2024-06-03 20:05:10,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 179 transitions, 1900 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-03 20:05:10,441 INFO L231 Difference]: Finished difference. Result has 228 places, 166 transitions, 1572 flow [2024-06-03 20:05:10,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1572, PETRI_PLACES=228, PETRI_TRANSITIONS=166} [2024-06-03 20:05:10,442 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-03 20:05:10,442 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 166 transitions, 1572 flow [2024-06-03 20:05:10,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:10,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:10,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:10,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-03 20:05:10,442 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:10,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:10,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1405676022, now seen corresponding path program 12 times [2024-06-03 20:05:10,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:10,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991269118] [2024-06-03 20:05:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:10,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:11,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:11,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991269118] [2024-06-03 20:05:11,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991269118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:11,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:11,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:11,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207388413] [2024-06-03 20:05:11,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:11,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:11,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:11,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:11,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:11,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:11,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 166 transitions, 1572 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:11,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:11,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:11,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:11,921 INFO L124 PetriNetUnfolderBase]: 431/852 cut-off events. [2024-06-03 20:05:11,921 INFO L125 PetriNetUnfolderBase]: For 79711/79711 co-relation queries the response was YES. [2024-06-03 20:05:11,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5486 conditions, 852 events. 431/852 cut-off events. For 79711/79711 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4363 event pairs, 117 based on Foata normal form. 2/854 useless extension candidates. Maximal degree in co-relation 5386. Up to 785 conditions per place. [2024-06-03 20:05:11,927 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 157 selfloop transitions, 20 changer transitions 0/179 dead transitions. [2024-06-03 20:05:11,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 179 transitions, 1990 flow [2024-06-03 20:05:11,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:05:11,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:05:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-03 20:05:11,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-03 20:05:11,929 INFO L175 Difference]: Start difference. First operand has 228 places, 166 transitions, 1572 flow. Second operand 10 states and 101 transitions. [2024-06-03 20:05:11,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 179 transitions, 1990 flow [2024-06-03 20:05:12,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 179 transitions, 1906 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-03 20:05:12,140 INFO L231 Difference]: Finished difference. Result has 230 places, 167 transitions, 1570 flow [2024-06-03 20:05:12,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1570, PETRI_PLACES=230, PETRI_TRANSITIONS=167} [2024-06-03 20:05:12,141 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-03 20:05:12,141 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 167 transitions, 1570 flow [2024-06-03 20:05:12,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:12,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:12,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:12,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-03 20:05:12,141 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:12,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash 636149882, now seen corresponding path program 68 times [2024-06-03 20:05:12,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:12,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787251010] [2024-06-03 20:05:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:12,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:13,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:13,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787251010] [2024-06-03 20:05:13,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787251010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:13,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:13,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:13,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319094552] [2024-06-03 20:05:13,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:13,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:13,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:13,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:13,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:13,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:13,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 167 transitions, 1570 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:13,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:13,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:13,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:14,021 INFO L124 PetriNetUnfolderBase]: 450/893 cut-off events. [2024-06-03 20:05:14,021 INFO L125 PetriNetUnfolderBase]: For 105595/105595 co-relation queries the response was YES. [2024-06-03 20:05:14,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5561 conditions, 893 events. 450/893 cut-off events. For 105595/105595 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4673 event pairs, 116 based on Foata normal form. 10/903 useless extension candidates. Maximal degree in co-relation 5460. Up to 736 conditions per place. [2024-06-03 20:05:14,028 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 34 changer transitions 11/189 dead transitions. [2024-06-03 20:05:14,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 189 transitions, 2028 flow [2024-06-03 20:05:14,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-03 20:05:14,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-03 20:05:14,029 INFO L175 Difference]: Start difference. First operand has 230 places, 167 transitions, 1570 flow. Second operand 11 states and 122 transitions. [2024-06-03 20:05:14,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 189 transitions, 2028 flow [2024-06-03 20:05:14,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 189 transitions, 1952 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 20:05:14,272 INFO L231 Difference]: Finished difference. Result has 234 places, 166 transitions, 1576 flow [2024-06-03 20:05:14,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1498, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1576, PETRI_PLACES=234, PETRI_TRANSITIONS=166} [2024-06-03 20:05:14,273 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-03 20:05:14,273 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 166 transitions, 1576 flow [2024-06-03 20:05:14,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:14,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:14,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:14,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-03 20:05:14,273 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:14,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1718462666, now seen corresponding path program 69 times [2024-06-03 20:05:14,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:14,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116539383] [2024-06-03 20:05:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:14,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:15,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:15,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116539383] [2024-06-03 20:05:15,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116539383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:15,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:15,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:15,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851701855] [2024-06-03 20:05:15,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:15,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:15,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:15,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:15,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:15,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:15,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 166 transitions, 1576 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:15,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:15,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:15,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:15,965 INFO L124 PetriNetUnfolderBase]: 440/879 cut-off events. [2024-06-03 20:05:15,965 INFO L125 PetriNetUnfolderBase]: For 107953/107953 co-relation queries the response was YES. [2024-06-03 20:05:15,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5503 conditions, 879 events. 440/879 cut-off events. For 107953/107953 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4595 event pairs, 121 based on Foata normal form. 10/889 useless extension candidates. Maximal degree in co-relation 5400. Up to 781 conditions per place. [2024-06-03 20:05:15,970 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 19 changer transitions 12/184 dead transitions. [2024-06-03 20:05:15,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 184 transitions, 1994 flow [2024-06-03 20:05:15,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-03 20:05:15,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-03 20:05:15,971 INFO L175 Difference]: Start difference. First operand has 234 places, 166 transitions, 1576 flow. Second operand 11 states and 112 transitions. [2024-06-03 20:05:15,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 184 transitions, 1994 flow [2024-06-03 20:05:16,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 184 transitions, 1936 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 20:05:16,196 INFO L231 Difference]: Finished difference. Result has 233 places, 162 transitions, 1518 flow [2024-06-03 20:05:16,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1518, PETRI_PLACES=233, PETRI_TRANSITIONS=162} [2024-06-03 20:05:16,197 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-03 20:05:16,197 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 162 transitions, 1518 flow [2024-06-03 20:05:16,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:16,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:16,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:16,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-03 20:05:16,197 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:16,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:16,197 INFO L85 PathProgramCache]: Analyzing trace with hash 635942492, now seen corresponding path program 70 times [2024-06-03 20:05:16,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:16,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031957307] [2024-06-03 20:05:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:17,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:17,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031957307] [2024-06-03 20:05:17,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031957307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:17,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:17,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:17,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828496102] [2024-06-03 20:05:17,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:17,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:17,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:17,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:17,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:17,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:17,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 162 transitions, 1518 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:17,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:17,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:17,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:17,853 INFO L124 PetriNetUnfolderBase]: 453/914 cut-off events. [2024-06-03 20:05:17,853 INFO L125 PetriNetUnfolderBase]: For 129577/129577 co-relation queries the response was YES. [2024-06-03 20:05:17,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6254 conditions, 914 events. 453/914 cut-off events. For 129577/129577 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4851 event pairs, 129 based on Foata normal form. 8/922 useless extension candidates. Maximal degree in co-relation 6152. Up to 721 conditions per place. [2024-06-03 20:05:17,859 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 148 selfloop transitions, 28 changer transitions 7/185 dead transitions. [2024-06-03 20:05:17,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 185 transitions, 2110 flow [2024-06-03 20:05:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-03 20:05:17,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-03 20:05:17,860 INFO L175 Difference]: Start difference. First operand has 233 places, 162 transitions, 1518 flow. Second operand 11 states and 122 transitions. [2024-06-03 20:05:17,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 185 transitions, 2110 flow [2024-06-03 20:05:18,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 185 transitions, 2064 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:05:18,080 INFO L231 Difference]: Finished difference. Result has 231 places, 160 transitions, 1518 flow [2024-06-03 20:05:18,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1518, PETRI_PLACES=231, PETRI_TRANSITIONS=160} [2024-06-03 20:05:18,080 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-03 20:05:18,080 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 160 transitions, 1518 flow [2024-06-03 20:05:18,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:18,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:18,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:18,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-03 20:05:18,081 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:18,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:18,081 INFO L85 PathProgramCache]: Analyzing trace with hash 563773178, now seen corresponding path program 71 times [2024-06-03 20:05:18,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:18,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025809410] [2024-06-03 20:05:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:18,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:19,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:19,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025809410] [2024-06-03 20:05:19,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025809410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:19,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:19,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:19,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285659542] [2024-06-03 20:05:19,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:19,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:19,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:19,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:19,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:19,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:19,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 160 transitions, 1518 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:19,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:19,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:19,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:19,796 INFO L124 PetriNetUnfolderBase]: 451/912 cut-off events. [2024-06-03 20:05:19,796 INFO L125 PetriNetUnfolderBase]: For 132395/132395 co-relation queries the response was YES. [2024-06-03 20:05:19,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6229 conditions, 912 events. 451/912 cut-off events. For 132395/132395 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4865 event pairs, 137 based on Foata normal form. 10/922 useless extension candidates. Maximal degree in co-relation 6128. Up to 786 conditions per place. [2024-06-03 20:05:19,802 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 25 changer transitions 12/179 dead transitions. [2024-06-03 20:05:19,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 179 transitions, 1930 flow [2024-06-03 20:05:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:19,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:19,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 20:05:19,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-03 20:05:19,803 INFO L175 Difference]: Start difference. First operand has 231 places, 160 transitions, 1518 flow. Second operand 11 states and 119 transitions. [2024-06-03 20:05:19,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 179 transitions, 1930 flow [2024-06-03 20:05:19,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 179 transitions, 1874 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:05:19,991 INFO L231 Difference]: Finished difference. Result has 230 places, 156 transitions, 1477 flow [2024-06-03 20:05:19,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1477, PETRI_PLACES=230, PETRI_TRANSITIONS=156} [2024-06-03 20:05:19,991 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-03 20:05:19,991 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 156 transitions, 1477 flow [2024-06-03 20:05:19,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:19,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:19,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:19,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-03 20:05:19,992 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:19,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash 643567128, now seen corresponding path program 13 times [2024-06-03 20:05:19,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:19,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310408621] [2024-06-03 20:05:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:19,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:21,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310408621] [2024-06-03 20:05:21,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310408621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:21,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:21,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:21,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623679004] [2024-06-03 20:05:21,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:21,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:21,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:21,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:21,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:21,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:21,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 156 transitions, 1477 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:21,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:21,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:21,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:21,896 INFO L124 PetriNetUnfolderBase]: 430/869 cut-off events. [2024-06-03 20:05:21,896 INFO L125 PetriNetUnfolderBase]: For 106281/106281 co-relation queries the response was YES. [2024-06-03 20:05:21,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6106 conditions, 869 events. 430/869 cut-off events. For 106281/106281 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4548 event pairs, 137 based on Foata normal form. 2/871 useless extension candidates. Maximal degree in co-relation 6006. Up to 796 conditions per place. [2024-06-03 20:05:21,902 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 141 selfloop transitions, 26 changer transitions 0/169 dead transitions. [2024-06-03 20:05:21,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 169 transitions, 1879 flow [2024-06-03 20:05:21,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:05:21,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:05:21,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-03 20:05:21,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-03 20:05:21,903 INFO L175 Difference]: Start difference. First operand has 230 places, 156 transitions, 1477 flow. Second operand 10 states and 104 transitions. [2024-06-03 20:05:21,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 169 transitions, 1879 flow [2024-06-03 20:05:22,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 169 transitions, 1823 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 20:05:22,125 INFO L231 Difference]: Finished difference. Result has 225 places, 157 transitions, 1517 flow [2024-06-03 20:05:22,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1517, PETRI_PLACES=225, PETRI_TRANSITIONS=157} [2024-06-03 20:05:22,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-03 20:05:22,126 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 157 transitions, 1517 flow [2024-06-03 20:05:22,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:22,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:22,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:22,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2024-06-03 20:05:22,126 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:22,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:22,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1394634132, now seen corresponding path program 14 times [2024-06-03 20:05:22,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:22,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732635210] [2024-06-03 20:05:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:22,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:23,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:23,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732635210] [2024-06-03 20:05:23,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732635210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:23,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:23,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:23,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011559578] [2024-06-03 20:05:23,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:23,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:23,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:23,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:23,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:23,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:23,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 157 transitions, 1517 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:23,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:23,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:23,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:23,640 INFO L124 PetriNetUnfolderBase]: 434/877 cut-off events. [2024-06-03 20:05:23,640 INFO L125 PetriNetUnfolderBase]: For 101593/101593 co-relation queries the response was YES. [2024-06-03 20:05:23,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6140 conditions, 877 events. 434/877 cut-off events. For 101593/101593 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4598 event pairs, 138 based on Foata normal form. 2/879 useless extension candidates. Maximal degree in co-relation 6042. Up to 829 conditions per place. [2024-06-03 20:05:23,647 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 152 selfloop transitions, 16 changer transitions 0/170 dead transitions. [2024-06-03 20:05:23,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 170 transitions, 1919 flow [2024-06-03 20:05:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:05:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:05:23,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-03 20:05:23,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.303125 [2024-06-03 20:05:23,648 INFO L175 Difference]: Start difference. First operand has 225 places, 157 transitions, 1517 flow. Second operand 10 states and 97 transitions. [2024-06-03 20:05:23,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 170 transitions, 1919 flow [2024-06-03 20:05:23,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 170 transitions, 1833 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-03 20:05:23,892 INFO L231 Difference]: Finished difference. Result has 227 places, 158 transitions, 1509 flow [2024-06-03 20:05:23,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1509, PETRI_PLACES=227, PETRI_TRANSITIONS=158} [2024-06-03 20:05:23,892 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-03 20:05:23,892 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 158 transitions, 1509 flow [2024-06-03 20:05:23,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:23,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:23,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:23,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2024-06-03 20:05:23,892 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:23,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:23,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1967536630, now seen corresponding path program 15 times [2024-06-03 20:05:23,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:23,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103879390] [2024-06-03 20:05:23,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:23,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:25,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:25,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103879390] [2024-06-03 20:05:25,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103879390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:25,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:25,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:25,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335682072] [2024-06-03 20:05:25,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:25,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:25,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:25,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:25,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:25,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:25,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 158 transitions, 1509 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:25,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:25,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:25,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:25,592 INFO L124 PetriNetUnfolderBase]: 445/898 cut-off events. [2024-06-03 20:05:25,592 INFO L125 PetriNetUnfolderBase]: For 110840/110840 co-relation queries the response was YES. [2024-06-03 20:05:25,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6485 conditions, 898 events. 445/898 cut-off events. For 110840/110840 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4739 event pairs, 140 based on Foata normal form. 2/900 useless extension candidates. Maximal degree in co-relation 6386. Up to 803 conditions per place. [2024-06-03 20:05:25,598 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 145 selfloop transitions, 27 changer transitions 0/174 dead transitions. [2024-06-03 20:05:25,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 174 transitions, 2121 flow [2024-06-03 20:05:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:05:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:05:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 20:05:25,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-03 20:05:25,599 INFO L175 Difference]: Start difference. First operand has 227 places, 158 transitions, 1509 flow. Second operand 10 states and 106 transitions. [2024-06-03 20:05:25,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 174 transitions, 2121 flow [2024-06-03 20:05:25,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 174 transitions, 2053 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-03 20:05:25,796 INFO L231 Difference]: Finished difference. Result has 229 places, 160 transitions, 1585 flow [2024-06-03 20:05:25,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1585, PETRI_PLACES=229, PETRI_TRANSITIONS=160} [2024-06-03 20:05:25,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-03 20:05:25,797 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 160 transitions, 1585 flow [2024-06-03 20:05:25,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:25,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:25,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:25,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2024-06-03 20:05:25,797 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:25,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:25,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1967813336, now seen corresponding path program 72 times [2024-06-03 20:05:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:25,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608869859] [2024-06-03 20:05:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:25,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:27,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:27,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608869859] [2024-06-03 20:05:27,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608869859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:27,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:27,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:27,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467091832] [2024-06-03 20:05:27,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:27,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:27,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:27,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:27,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:27,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:27,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 160 transitions, 1585 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:27,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:27,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:27,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:27,731 INFO L124 PetriNetUnfolderBase]: 461/934 cut-off events. [2024-06-03 20:05:27,731 INFO L125 PetriNetUnfolderBase]: For 136487/136487 co-relation queries the response was YES. [2024-06-03 20:05:27,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6582 conditions, 934 events. 461/934 cut-off events. For 136487/136487 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5007 event pairs, 142 based on Foata normal form. 10/944 useless extension candidates. Maximal degree in co-relation 6482. Up to 810 conditions per place. [2024-06-03 20:05:27,738 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 143 selfloop transitions, 25 changer transitions 11/181 dead transitions. [2024-06-03 20:05:27,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 181 transitions, 2007 flow [2024-06-03 20:05:27,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-03 20:05:27,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 20:05:27,739 INFO L175 Difference]: Start difference. First operand has 229 places, 160 transitions, 1585 flow. Second operand 12 states and 126 transitions. [2024-06-03 20:05:27,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 181 transitions, 2007 flow [2024-06-03 20:05:27,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 181 transitions, 1928 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-03 20:05:27,979 INFO L231 Difference]: Finished difference. Result has 235 places, 157 transitions, 1528 flow [2024-06-03 20:05:27,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1528, PETRI_PLACES=235, PETRI_TRANSITIONS=157} [2024-06-03 20:05:27,980 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-03 20:05:27,980 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 157 transitions, 1528 flow [2024-06-03 20:05:27,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:27,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:27,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:27,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2024-06-03 20:05:27,980 INFO L420 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:27,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:27,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1974955240, now seen corresponding path program 16 times [2024-06-03 20:05:27,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:27,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053090748] [2024-06-03 20:05:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:27,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:29,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053090748] [2024-06-03 20:05:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053090748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:29,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:29,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:29,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450181691] [2024-06-03 20:05:29,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:29,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:29,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:29,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:29,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:29,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:29,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 157 transitions, 1528 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:29,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:29,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:29,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:29,547 INFO L124 PetriNetUnfolderBase]: 432/879 cut-off events. [2024-06-03 20:05:29,547 INFO L125 PetriNetUnfolderBase]: For 109461/109461 co-relation queries the response was YES. [2024-06-03 20:05:29,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6187 conditions, 879 events. 432/879 cut-off events. For 109461/109461 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4649 event pairs, 136 based on Foata normal form. 2/881 useless extension candidates. Maximal degree in co-relation 6085. Up to 801 conditions per place. [2024-06-03 20:05:29,554 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 141 selfloop transitions, 27 changer transitions 0/170 dead transitions. [2024-06-03 20:05:29,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 170 transitions, 1898 flow [2024-06-03 20:05:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:05:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:05:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-03 20:05:29,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-03 20:05:29,554 INFO L175 Difference]: Start difference. First operand has 235 places, 157 transitions, 1528 flow. Second operand 10 states and 104 transitions. [2024-06-03 20:05:29,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 170 transitions, 1898 flow [2024-06-03 20:05:29,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 170 transitions, 1808 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-03 20:05:29,773 INFO L231 Difference]: Finished difference. Result has 231 places, 157 transitions, 1496 flow [2024-06-03 20:05:29,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1496, PETRI_PLACES=231, PETRI_TRANSITIONS=157} [2024-06-03 20:05:29,773 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-03 20:05:29,773 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 157 transitions, 1496 flow [2024-06-03 20:05:29,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:29,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:29,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:29,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2024-06-03 20:05:29,774 INFO L420 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:29,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash 643576428, now seen corresponding path program 17 times [2024-06-03 20:05:29,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:29,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215838248] [2024-06-03 20:05:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:29,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:31,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:31,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215838248] [2024-06-03 20:05:31,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215838248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:31,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:31,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:05:31,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857110229] [2024-06-03 20:05:31,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:31,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:05:31,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:31,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:05:31,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:05:31,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:31,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 157 transitions, 1496 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:31,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:31,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:31,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:31,542 INFO L124 PetriNetUnfolderBase]: 436/887 cut-off events. [2024-06-03 20:05:31,542 INFO L125 PetriNetUnfolderBase]: For 106853/106853 co-relation queries the response was YES. [2024-06-03 20:05:31,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6190 conditions, 887 events. 436/887 cut-off events. For 106853/106853 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4722 event pairs, 135 based on Foata normal form. 2/889 useless extension candidates. Maximal degree in co-relation 6089. Up to 745 conditions per place. [2024-06-03 20:05:31,549 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 134 selfloop transitions, 36 changer transitions 0/172 dead transitions. [2024-06-03 20:05:31,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 172 transitions, 2066 flow [2024-06-03 20:05:31,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:05:31,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:05:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 20:05:31,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-03 20:05:31,550 INFO L175 Difference]: Start difference. First operand has 231 places, 157 transitions, 1496 flow. Second operand 10 states and 109 transitions. [2024-06-03 20:05:31,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 172 transitions, 2066 flow [2024-06-03 20:05:31,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 172 transitions, 2006 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 20:05:31,731 INFO L231 Difference]: Finished difference. Result has 232 places, 158 transitions, 1556 flow [2024-06-03 20:05:31,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1556, PETRI_PLACES=232, PETRI_TRANSITIONS=158} [2024-06-03 20:05:31,731 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-03 20:05:31,731 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 158 transitions, 1556 flow [2024-06-03 20:05:31,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:31,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:31,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:31,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2024-06-03 20:05:31,731 INFO L420 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:31,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:31,732 INFO L85 PathProgramCache]: Analyzing trace with hash 643299722, now seen corresponding path program 73 times [2024-06-03 20:05:31,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:31,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896897949] [2024-06-03 20:05:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:31,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:32,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:32,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896897949] [2024-06-03 20:05:32,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896897949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:32,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:32,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:32,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756539548] [2024-06-03 20:05:32,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:32,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:32,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:32,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:32,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:32,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:32,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 158 transitions, 1556 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:32,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:32,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:32,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:33,288 INFO L124 PetriNetUnfolderBase]: 423/864 cut-off events. [2024-06-03 20:05:33,288 INFO L125 PetriNetUnfolderBase]: For 103734/103734 co-relation queries the response was YES. [2024-06-03 20:05:33,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5423 conditions, 864 events. 423/864 cut-off events. For 103734/103734 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4584 event pairs, 124 based on Foata normal form. 10/874 useless extension candidates. Maximal degree in co-relation 5321. Up to 741 conditions per place. [2024-06-03 20:05:33,295 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 25 changer transitions 9/176 dead transitions. [2024-06-03 20:05:33,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 176 transitions, 1958 flow [2024-06-03 20:05:33,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-03 20:05:33,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-03 20:05:33,296 INFO L175 Difference]: Start difference. First operand has 232 places, 158 transitions, 1556 flow. Second operand 11 states and 117 transitions. [2024-06-03 20:05:33,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 176 transitions, 1958 flow [2024-06-03 20:05:33,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 176 transitions, 1836 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-03 20:05:33,483 INFO L231 Difference]: Finished difference. Result has 235 places, 155 transitions, 1458 flow [2024-06-03 20:05:33,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1458, PETRI_PLACES=235, PETRI_TRANSITIONS=155} [2024-06-03 20:05:33,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-03 20:05:33,484 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 155 transitions, 1458 flow [2024-06-03 20:05:33,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:33,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:33,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:33,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2024-06-03 20:05:33,484 INFO L420 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:33,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:33,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1154963364, now seen corresponding path program 74 times [2024-06-03 20:05:33,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:33,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196517715] [2024-06-03 20:05:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:33,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:34,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196517715] [2024-06-03 20:05:34,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196517715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:34,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:34,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:34,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003161212] [2024-06-03 20:05:34,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:34,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:34,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:34,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:34,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:35,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:35,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 155 transitions, 1458 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:35,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:35,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:35,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:35,571 INFO L124 PetriNetUnfolderBase]: 413/850 cut-off events. [2024-06-03 20:05:35,572 INFO L125 PetriNetUnfolderBase]: For 105323/105323 co-relation queries the response was YES. [2024-06-03 20:05:35,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5212 conditions, 850 events. 413/850 cut-off events. For 105323/105323 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4510 event pairs, 119 based on Foata normal form. 10/860 useless extension candidates. Maximal degree in co-relation 5110. Up to 728 conditions per place. [2024-06-03 20:05:35,578 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 25 changer transitions 11/174 dead transitions. [2024-06-03 20:05:35,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 174 transitions, 1860 flow [2024-06-03 20:05:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:35,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:35,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 20:05:35,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-03 20:05:35,578 INFO L175 Difference]: Start difference. First operand has 235 places, 155 transitions, 1458 flow. Second operand 11 states and 116 transitions. [2024-06-03 20:05:35,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 174 transitions, 1860 flow [2024-06-03 20:05:35,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 174 transitions, 1804 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 20:05:35,794 INFO L231 Difference]: Finished difference. Result has 232 places, 152 transitions, 1425 flow [2024-06-03 20:05:35,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1425, PETRI_PLACES=232, PETRI_TRANSITIONS=152} [2024-06-03 20:05:35,794 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-03 20:05:35,794 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 152 transitions, 1425 flow [2024-06-03 20:05:35,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:35,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:35,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:35,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2024-06-03 20:05:35,794 INFO L420 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:35,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:35,795 INFO L85 PathProgramCache]: Analyzing trace with hash 370043514, now seen corresponding path program 18 times [2024-06-03 20:05:35,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:35,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056795353] [2024-06-03 20:05:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:35,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:37,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:37,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056795353] [2024-06-03 20:05:37,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056795353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:37,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:37,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:37,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572587427] [2024-06-03 20:05:37,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:37,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:37,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:37,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:37,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:37,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:37,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 152 transitions, 1425 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:37,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:37,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:37,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:37,526 INFO L124 PetriNetUnfolderBase]: 384/795 cut-off events. [2024-06-03 20:05:37,526 INFO L125 PetriNetUnfolderBase]: For 73056/73056 co-relation queries the response was YES. [2024-06-03 20:05:37,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4803 conditions, 795 events. 384/795 cut-off events. For 73056/73056 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4169 event pairs, 117 based on Foata normal form. 2/797 useless extension candidates. Maximal degree in co-relation 4702. Up to 722 conditions per place. [2024-06-03 20:05:37,532 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 139 selfloop transitions, 24 changer transitions 0/165 dead transitions. [2024-06-03 20:05:37,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 165 transitions, 1785 flow [2024-06-03 20:05:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:05:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:05:37,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 20:05:37,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-03 20:05:37,532 INFO L175 Difference]: Start difference. First operand has 232 places, 152 transitions, 1425 flow. Second operand 10 states and 106 transitions. [2024-06-03 20:05:37,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 165 transitions, 1785 flow [2024-06-03 20:05:37,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 165 transitions, 1697 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-03 20:05:37,707 INFO L231 Difference]: Finished difference. Result has 229 places, 152 transitions, 1389 flow [2024-06-03 20:05:37,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1389, PETRI_PLACES=229, PETRI_TRANSITIONS=152} [2024-06-03 20:05:37,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-03 20:05:37,707 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 152 transitions, 1389 flow [2024-06-03 20:05:37,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:37,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:37,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:37,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2024-06-03 20:05:37,707 INFO L420 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:37,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:37,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1220649606, now seen corresponding path program 75 times [2024-06-03 20:05:37,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:37,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88665217] [2024-06-03 20:05:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:37,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:39,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:39,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88665217] [2024-06-03 20:05:39,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88665217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:39,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:39,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:39,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315051282] [2024-06-03 20:05:39,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:39,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:39,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:39,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:39,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:39,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:39,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 152 transitions, 1389 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:39,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:39,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:39,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:39,583 INFO L124 PetriNetUnfolderBase]: 425/882 cut-off events. [2024-06-03 20:05:39,583 INFO L125 PetriNetUnfolderBase]: For 116617/116617 co-relation queries the response was YES. [2024-06-03 20:05:39,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5692 conditions, 882 events. 425/882 cut-off events. For 116617/116617 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4735 event pairs, 130 based on Foata normal form. 8/890 useless extension candidates. Maximal degree in co-relation 5592. Up to 683 conditions per place. [2024-06-03 20:05:39,589 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 27 changer transitions 7/176 dead transitions. [2024-06-03 20:05:39,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 176 transitions, 1963 flow [2024-06-03 20:05:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:39,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:39,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 20:05:39,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 20:05:39,590 INFO L175 Difference]: Start difference. First operand has 229 places, 152 transitions, 1389 flow. Second operand 11 states and 125 transitions. [2024-06-03 20:05:39,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 176 transitions, 1963 flow [2024-06-03 20:05:39,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 176 transitions, 1874 flow, removed 12 selfloop flow, removed 14 redundant places. [2024-06-03 20:05:39,853 INFO L231 Difference]: Finished difference. Result has 226 places, 150 transitions, 1350 flow [2024-06-03 20:05:39,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1350, PETRI_PLACES=226, PETRI_TRANSITIONS=150} [2024-06-03 20:05:39,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-03 20:05:39,853 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 150 transitions, 1350 flow [2024-06-03 20:05:39,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:39,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:39,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:39,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2024-06-03 20:05:39,854 INFO L420 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:39,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:39,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1975164986, now seen corresponding path program 76 times [2024-06-03 20:05:39,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:39,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553067406] [2024-06-03 20:05:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:39,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:41,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:41,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553067406] [2024-06-03 20:05:41,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553067406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:41,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:41,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:41,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473629009] [2024-06-03 20:05:41,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:41,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:41,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:41,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:41,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:41,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:41,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 150 transitions, 1350 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:41,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:41,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:41,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:41,689 INFO L124 PetriNetUnfolderBase]: 416/867 cut-off events. [2024-06-03 20:05:41,690 INFO L125 PetriNetUnfolderBase]: For 104823/104823 co-relation queries the response was YES. [2024-06-03 20:05:41,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5344 conditions, 867 events. 416/867 cut-off events. For 104823/104823 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4672 event pairs, 137 based on Foata normal form. 10/877 useless extension candidates. Maximal degree in co-relation 5248. Up to 744 conditions per place. [2024-06-03 20:05:41,696 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 134 selfloop transitions, 25 changer transitions 9/170 dead transitions. [2024-06-03 20:05:41,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 170 transitions, 1746 flow [2024-06-03 20:05:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-03 20:05:41,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-03 20:05:41,699 INFO L175 Difference]: Start difference. First operand has 226 places, 150 transitions, 1350 flow. Second operand 12 states and 124 transitions. [2024-06-03 20:05:41,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 170 transitions, 1746 flow [2024-06-03 20:05:41,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 170 transitions, 1688 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 20:05:41,924 INFO L231 Difference]: Finished difference. Result has 225 places, 147 transitions, 1320 flow [2024-06-03 20:05:41,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1320, PETRI_PLACES=225, PETRI_TRANSITIONS=147} [2024-06-03 20:05:41,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-03 20:05:41,925 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 147 transitions, 1320 flow [2024-06-03 20:05:41,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:41,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:41,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:41,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2024-06-03 20:05:41,925 INFO L420 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:41,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:41,925 INFO L85 PathProgramCache]: Analyzing trace with hash 369833768, now seen corresponding path program 77 times [2024-06-03 20:05:41,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:41,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576379845] [2024-06-03 20:05:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:41,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:43,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:43,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576379845] [2024-06-03 20:05:43,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576379845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:43,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:43,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:43,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88500692] [2024-06-03 20:05:43,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:43,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:43,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:43,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:43,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:43,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:43,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 147 transitions, 1320 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:43,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:43,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:43,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:43,539 INFO L124 PetriNetUnfolderBase]: 386/809 cut-off events. [2024-06-03 20:05:43,539 INFO L125 PetriNetUnfolderBase]: For 81764/81764 co-relation queries the response was YES. [2024-06-03 20:05:43,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4559 conditions, 809 events. 386/809 cut-off events. For 81764/81764 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4290 event pairs, 121 based on Foata normal form. 10/819 useless extension candidates. Maximal degree in co-relation 4464. Up to 683 conditions per place. [2024-06-03 20:05:43,545 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 23 changer transitions 12/167 dead transitions. [2024-06-03 20:05:43,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 167 transitions, 1712 flow [2024-06-03 20:05:43,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:43,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:43,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 20:05:43,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 20:05:43,546 INFO L175 Difference]: Start difference. First operand has 225 places, 147 transitions, 1320 flow. Second operand 11 states and 121 transitions. [2024-06-03 20:05:43,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 167 transitions, 1712 flow [2024-06-03 20:05:43,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 167 transitions, 1663 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 20:05:43,740 INFO L231 Difference]: Finished difference. Result has 223 places, 143 transitions, 1284 flow [2024-06-03 20:05:43,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1284, PETRI_PLACES=223, PETRI_TRANSITIONS=143} [2024-06-03 20:05:43,740 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-03 20:05:43,740 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 143 transitions, 1284 flow [2024-06-03 20:05:43,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:43,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:43,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:43,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2024-06-03 20:05:43,740 INFO L420 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:43,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:43,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1975170566, now seen corresponding path program 78 times [2024-06-03 20:05:43,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:43,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975754252] [2024-06-03 20:05:43,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:43,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:44,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:44,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975754252] [2024-06-03 20:05:44,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975754252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:44,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:44,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:44,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749599437] [2024-06-03 20:05:44,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:44,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:44,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:44,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:44,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:44,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:44,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 143 transitions, 1284 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:44,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:44,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:44,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:45,244 INFO L124 PetriNetUnfolderBase]: 373/786 cut-off events. [2024-06-03 20:05:45,244 INFO L125 PetriNetUnfolderBase]: For 74505/74505 co-relation queries the response was YES. [2024-06-03 20:05:45,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4432 conditions, 786 events. 373/786 cut-off events. For 74505/74505 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4168 event pairs, 114 based on Foata normal form. 8/794 useless extension candidates. Maximal degree in co-relation 4338. Up to 673 conditions per place. [2024-06-03 20:05:45,249 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 124 selfloop transitions, 23 changer transitions 11/160 dead transitions. [2024-06-03 20:05:45,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 160 transitions, 1646 flow [2024-06-03 20:05:45,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:45,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-03 20:05:45,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-03 20:05:45,250 INFO L175 Difference]: Start difference. First operand has 223 places, 143 transitions, 1284 flow. Second operand 11 states and 112 transitions. [2024-06-03 20:05:45,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 160 transitions, 1646 flow [2024-06-03 20:05:45,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 160 transitions, 1594 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 20:05:45,406 INFO L231 Difference]: Finished difference. Result has 219 places, 140 transitions, 1252 flow [2024-06-03 20:05:45,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1252, PETRI_PLACES=219, PETRI_TRANSITIONS=140} [2024-06-03 20:05:45,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-03 20:05:45,406 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 140 transitions, 1252 flow [2024-06-03 20:05:45,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:45,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:45,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:45,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2024-06-03 20:05:45,406 INFO L420 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:45,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:45,407 INFO L85 PathProgramCache]: Analyzing trace with hash 442210472, now seen corresponding path program 79 times [2024-06-03 20:05:45,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:45,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029269528] [2024-06-03 20:05:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:45,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:46,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:46,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029269528] [2024-06-03 20:05:46,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029269528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:46,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:46,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:46,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300015678] [2024-06-03 20:05:46,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:46,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:46,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:46,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:46,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:46,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:46,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 140 transitions, 1252 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:46,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:46,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:46,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:47,218 INFO L124 PetriNetUnfolderBase]: 341/722 cut-off events. [2024-06-03 20:05:47,218 INFO L125 PetriNetUnfolderBase]: For 51815/51815 co-relation queries the response was YES. [2024-06-03 20:05:47,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3528 conditions, 722 events. 341/722 cut-off events. For 51815/51815 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3759 event pairs, 98 based on Foata normal form. 10/732 useless extension candidates. Maximal degree in co-relation 3436. Up to 605 conditions per place. [2024-06-03 20:05:47,223 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 124 selfloop transitions, 22 changer transitions 11/159 dead transitions. [2024-06-03 20:05:47,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 159 transitions, 1620 flow [2024-06-03 20:05:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:47,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-03 20:05:47,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-03 20:05:47,223 INFO L175 Difference]: Start difference. First operand has 219 places, 140 transitions, 1252 flow. Second operand 12 states and 124 transitions. [2024-06-03 20:05:47,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 159 transitions, 1620 flow [2024-06-03 20:05:47,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 159 transitions, 1551 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 20:05:47,300 INFO L231 Difference]: Finished difference. Result has 215 places, 136 transitions, 1195 flow [2024-06-03 20:05:47,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1195, PETRI_PLACES=215, PETRI_TRANSITIONS=136} [2024-06-03 20:05:47,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-03 20:05:47,300 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 136 transitions, 1195 flow [2024-06-03 20:05:47,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:47,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:47,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:47,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2024-06-03 20:05:47,301 INFO L420 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:47,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash 969763411, now seen corresponding path program 1 times [2024-06-03 20:05:47,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:47,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313288221] [2024-06-03 20:05:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:47,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:48,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:48,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313288221] [2024-06-03 20:05:48,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313288221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:48,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:48,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:48,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952883850] [2024-06-03 20:05:48,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:48,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:48,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:48,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:48,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:49,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:49,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 136 transitions, 1195 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:49,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:49,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:49,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:49,523 INFO L124 PetriNetUnfolderBase]: 323/692 cut-off events. [2024-06-03 20:05:49,523 INFO L125 PetriNetUnfolderBase]: For 40045/40045 co-relation queries the response was YES. [2024-06-03 20:05:49,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3363 conditions, 692 events. 323/692 cut-off events. For 40045/40045 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3621 event pairs, 67 based on Foata normal form. 6/698 useless extension candidates. Maximal degree in co-relation 3273. Up to 341 conditions per place. [2024-06-03 20:05:49,527 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 101 selfloop transitions, 42 changer transitions 9/154 dead transitions. [2024-06-03 20:05:49,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 154 transitions, 1547 flow [2024-06-03 20:05:49,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-03 20:05:49,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-03 20:05:49,528 INFO L175 Difference]: Start difference. First operand has 215 places, 136 transitions, 1195 flow. Second operand 12 states and 125 transitions. [2024-06-03 20:05:49,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 154 transitions, 1547 flow [2024-06-03 20:05:49,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 154 transitions, 1471 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 20:05:49,604 INFO L231 Difference]: Finished difference. Result has 208 places, 131 transitions, 1162 flow [2024-06-03 20:05:49,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1162, PETRI_PLACES=208, PETRI_TRANSITIONS=131} [2024-06-03 20:05:49,604 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-03 20:05:49,604 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 131 transitions, 1162 flow [2024-06-03 20:05:49,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:49,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:49,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:49,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2024-06-03 20:05:49,604 INFO L420 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:49,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:49,604 INFO L85 PathProgramCache]: Analyzing trace with hash 102970729, now seen corresponding path program 2 times [2024-06-03 20:05:49,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:49,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959319661] [2024-06-03 20:05:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:49,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:51,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:51,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959319661] [2024-06-03 20:05:51,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959319661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:51,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:51,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:51,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468135423] [2024-06-03 20:05:51,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:51,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:51,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:51,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:51,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:51,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:51,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 131 transitions, 1162 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:51,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:51,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:51,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:51,753 INFO L124 PetriNetUnfolderBase]: 308/656 cut-off events. [2024-06-03 20:05:51,753 INFO L125 PetriNetUnfolderBase]: For 38874/38874 co-relation queries the response was YES. [2024-06-03 20:05:51,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3191 conditions, 656 events. 308/656 cut-off events. For 38874/38874 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3376 event pairs, 55 based on Foata normal form. 6/662 useless extension candidates. Maximal degree in co-relation 3103. Up to 337 conditions per place. [2024-06-03 20:05:51,757 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 38 changer transitions 12/150 dead transitions. [2024-06-03 20:05:51,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 150 transitions, 1508 flow [2024-06-03 20:05:51,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:51,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-03 20:05:51,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-03 20:05:51,758 INFO L175 Difference]: Start difference. First operand has 208 places, 131 transitions, 1162 flow. Second operand 12 states and 122 transitions. [2024-06-03 20:05:51,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 150 transitions, 1508 flow [2024-06-03 20:05:51,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 150 transitions, 1408 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-03 20:05:51,837 INFO L231 Difference]: Finished difference. Result has 206 places, 127 transitions, 1111 flow [2024-06-03 20:05:51,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1111, PETRI_PLACES=206, PETRI_TRANSITIONS=127} [2024-06-03 20:05:51,837 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-03 20:05:51,837 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 127 transitions, 1111 flow [2024-06-03 20:05:51,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:51,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:51,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:51,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2024-06-03 20:05:51,838 INFO L420 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:51,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash -676632649, now seen corresponding path program 3 times [2024-06-03 20:05:51,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:51,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098853186] [2024-06-03 20:05:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:51,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:53,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:53,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098853186] [2024-06-03 20:05:53,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098853186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:53,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:53,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:53,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809010097] [2024-06-03 20:05:53,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:53,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:53,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:53,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:53,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:53,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:53,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 127 transitions, 1111 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:53,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:53,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:53,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:53,800 INFO L124 PetriNetUnfolderBase]: 299/637 cut-off events. [2024-06-03 20:05:53,800 INFO L125 PetriNetUnfolderBase]: For 38802/38802 co-relation queries the response was YES. [2024-06-03 20:05:53,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3094 conditions, 637 events. 299/637 cut-off events. For 38802/38802 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3250 event pairs, 58 based on Foata normal form. 6/643 useless extension candidates. Maximal degree in co-relation 3007. Up to 327 conditions per place. [2024-06-03 20:05:53,805 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 33 changer transitions 16/146 dead transitions. [2024-06-03 20:05:53,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 146 transitions, 1449 flow [2024-06-03 20:05:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:53,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:53,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-03 20:05:53,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-03 20:05:53,805 INFO L175 Difference]: Start difference. First operand has 206 places, 127 transitions, 1111 flow. Second operand 12 states and 124 transitions. [2024-06-03 20:05:53,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 146 transitions, 1449 flow [2024-06-03 20:05:53,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 146 transitions, 1369 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 20:05:53,881 INFO L231 Difference]: Finished difference. Result has 203 places, 121 transitions, 1054 flow [2024-06-03 20:05:53,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1054, PETRI_PLACES=203, PETRI_TRANSITIONS=121} [2024-06-03 20:05:53,882 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-03 20:05:53,882 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 121 transitions, 1054 flow [2024-06-03 20:05:53,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:53,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:53,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:53,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2024-06-03 20:05:53,882 INFO L420 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:53,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2107083003, now seen corresponding path program 4 times [2024-06-03 20:05:53,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:53,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746314680] [2024-06-03 20:05:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:53,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:55,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:55,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746314680] [2024-06-03 20:05:55,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746314680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:55,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:55,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:55,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382616570] [2024-06-03 20:05:55,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:55,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:55,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:55,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:55,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:55,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 121 transitions, 1054 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:55,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:55,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:55,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:55,829 INFO L124 PetriNetUnfolderBase]: 288/612 cut-off events. [2024-06-03 20:05:55,829 INFO L125 PetriNetUnfolderBase]: For 38768/38768 co-relation queries the response was YES. [2024-06-03 20:05:55,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2988 conditions, 612 events. 288/612 cut-off events. For 38768/38768 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3057 event pairs, 54 based on Foata normal form. 6/618 useless extension candidates. Maximal degree in co-relation 2901. Up to 317 conditions per place. [2024-06-03 20:05:55,833 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 91 selfloop transitions, 35 changer transitions 11/139 dead transitions. [2024-06-03 20:05:55,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 139 transitions, 1374 flow [2024-06-03 20:05:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-03 20:05:55,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-03 20:05:55,834 INFO L175 Difference]: Start difference. First operand has 203 places, 121 transitions, 1054 flow. Second operand 12 states and 118 transitions. [2024-06-03 20:05:55,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 139 transitions, 1374 flow [2024-06-03 20:05:55,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 139 transitions, 1300 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 20:05:55,919 INFO L231 Difference]: Finished difference. Result has 197 places, 118 transitions, 1029 flow [2024-06-03 20:05:55,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1029, PETRI_PLACES=197, PETRI_TRANSITIONS=118} [2024-06-03 20:05:55,920 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-03 20:05:55,920 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 118 transitions, 1029 flow [2024-06-03 20:05:55,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:55,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:55,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:55,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2024-06-03 20:05:55,921 INFO L420 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:55,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2107371303, now seen corresponding path program 5 times [2024-06-03 20:05:55,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:55,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080953158] [2024-06-03 20:05:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:55,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:57,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:57,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:57,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080953158] [2024-06-03 20:05:57,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080953158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:57,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:57,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:57,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240659144] [2024-06-03 20:05:57,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:57,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:57,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:57,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:57,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:57,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:57,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 118 transitions, 1029 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:57,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:57,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:57,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:58,250 INFO L124 PetriNetUnfolderBase]: 278/594 cut-off events. [2024-06-03 20:05:58,250 INFO L125 PetriNetUnfolderBase]: For 38787/38787 co-relation queries the response was YES. [2024-06-03 20:05:58,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2917 conditions, 594 events. 278/594 cut-off events. For 38787/38787 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2953 event pairs, 50 based on Foata normal form. 6/600 useless extension candidates. Maximal degree in co-relation 2830. Up to 293 conditions per place. [2024-06-03 20:05:58,254 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 90 selfloop transitions, 33 changer transitions 11/136 dead transitions. [2024-06-03 20:05:58,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 136 transitions, 1341 flow [2024-06-03 20:05:58,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-03 20:05:58,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-03 20:05:58,254 INFO L175 Difference]: Start difference. First operand has 197 places, 118 transitions, 1029 flow. Second operand 12 states and 118 transitions. [2024-06-03 20:05:58,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 136 transitions, 1341 flow [2024-06-03 20:05:58,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 136 transitions, 1267 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 20:05:58,322 INFO L231 Difference]: Finished difference. Result has 195 places, 113 transitions, 987 flow [2024-06-03 20:05:58,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=987, PETRI_PLACES=195, PETRI_TRANSITIONS=113} [2024-06-03 20:05:58,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-03 20:05:58,322 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 113 transitions, 987 flow [2024-06-03 20:05:58,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:58,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:58,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:58,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2024-06-03 20:05:58,322 INFO L420 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:58,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:58,322 INFO L85 PathProgramCache]: Analyzing trace with hash 160239979, now seen corresponding path program 6 times [2024-06-03 20:05:58,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:58,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166329435] [2024-06-03 20:05:58,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:58,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:59,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:59,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166329435] [2024-06-03 20:05:59,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166329435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:59,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:59,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:59,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278959689] [2024-06-03 20:05:59,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:59,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:59,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:59,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:59,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:59,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:05:59,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 113 transitions, 987 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:59,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:59,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:05:59,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:00,167 INFO L124 PetriNetUnfolderBase]: 250/534 cut-off events. [2024-06-03 20:06:00,168 INFO L125 PetriNetUnfolderBase]: For 26078/26078 co-relation queries the response was YES. [2024-06-03 20:06:00,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2351 conditions, 534 events. 250/534 cut-off events. For 26078/26078 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2587 event pairs, 39 based on Foata normal form. 6/540 useless extension candidates. Maximal degree in co-relation 2264. Up to 256 conditions per place. [2024-06-03 20:06:00,171 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 79 selfloop transitions, 26 changer transitions 23/130 dead transitions. [2024-06-03 20:06:00,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 130 transitions, 1285 flow [2024-06-03 20:06:00,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:00,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-03 20:06:00,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2994791666666667 [2024-06-03 20:06:00,172 INFO L175 Difference]: Start difference. First operand has 195 places, 113 transitions, 987 flow. Second operand 12 states and 115 transitions. [2024-06-03 20:06:00,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 130 transitions, 1285 flow [2024-06-03 20:06:00,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 130 transitions, 1206 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-03 20:06:00,220 INFO L231 Difference]: Finished difference. Result has 189 places, 104 transitions, 898 flow [2024-06-03 20:06:00,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=898, PETRI_PLACES=189, PETRI_TRANSITIONS=104} [2024-06-03 20:06:00,221 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-03 20:06:00,221 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 104 transitions, 898 flow [2024-06-03 20:06:00,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:00,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:00,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:00,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2024-06-03 20:06:00,221 INFO L420 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:00,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:00,221 INFO L85 PathProgramCache]: Analyzing trace with hash -229875053, now seen corresponding path program 7 times [2024-06-03 20:06:00,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:00,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904484113] [2024-06-03 20:06:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:00,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:01,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:01,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904484113] [2024-06-03 20:06:01,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904484113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:01,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:01,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:06:01,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883430666] [2024-06-03 20:06:01,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:01,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:06:01,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:01,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:06:01,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:06:01,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:01,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 104 transitions, 898 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:01,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:01,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:01,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:01,972 INFO L124 PetriNetUnfolderBase]: 236/496 cut-off events. [2024-06-03 20:06:01,972 INFO L125 PetriNetUnfolderBase]: For 25947/25947 co-relation queries the response was YES. [2024-06-03 20:06:01,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2187 conditions, 496 events. 236/496 cut-off events. For 25947/25947 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2353 event pairs, 34 based on Foata normal form. 6/502 useless extension candidates. Maximal degree in co-relation 2101. Up to 240 conditions per place. [2024-06-03 20:06:01,975 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 74 selfloop transitions, 35 changer transitions 7/118 dead transitions. [2024-06-03 20:06:01,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 118 transitions, 1164 flow [2024-06-03 20:06:01,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:01,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:01,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-03 20:06:01,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-03 20:06:01,976 INFO L175 Difference]: Start difference. First operand has 189 places, 104 transitions, 898 flow. Second operand 11 states and 109 transitions. [2024-06-03 20:06:01,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 118 transitions, 1164 flow [2024-06-03 20:06:02,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 118 transitions, 968 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-03 20:06:02,010 INFO L231 Difference]: Finished difference. Result has 171 places, 101 transitions, 758 flow [2024-06-03 20:06:02,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=758, PETRI_PLACES=171, PETRI_TRANSITIONS=101} [2024-06-03 20:06:02,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-03 20:06:02,011 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 101 transitions, 758 flow [2024-06-03 20:06:02,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:02,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:02,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:02,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2024-06-03 20:06:02,011 INFO L420 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:02,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:02,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1962663269, now seen corresponding path program 8 times [2024-06-03 20:06:02,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:02,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369921177] [2024-06-03 20:06:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:02,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:03,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:03,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:03,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369921177] [2024-06-03 20:06:03,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369921177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:03,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:03,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:03,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973294881] [2024-06-03 20:06:03,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:03,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:03,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:03,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:03,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:03,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 101 transitions, 758 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:03,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:03,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:03,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:04,071 INFO L124 PetriNetUnfolderBase]: 223/466 cut-off events. [2024-06-03 20:06:04,071 INFO L125 PetriNetUnfolderBase]: For 24861/24861 co-relation queries the response was YES. [2024-06-03 20:06:04,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 466 events. 223/466 cut-off events. For 24861/24861 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2150 event pairs, 36 based on Foata normal form. 6/472 useless extension candidates. Maximal degree in co-relation 1875. Up to 236 conditions per place. [2024-06-03 20:06:04,074 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 68 selfloop transitions, 32 changer transitions 15/117 dead transitions. [2024-06-03 20:06:04,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 117 transitions, 1030 flow [2024-06-03 20:06:04,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-03 20:06:04,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-06-03 20:06:04,075 INFO L175 Difference]: Start difference. First operand has 171 places, 101 transitions, 758 flow. Second operand 11 states and 111 transitions. [2024-06-03 20:06:04,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 117 transitions, 1030 flow [2024-06-03 20:06:04,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 117 transitions, 888 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-03 20:06:04,116 INFO L231 Difference]: Finished difference. Result has 168 places, 95 transitions, 656 flow [2024-06-03 20:06:04,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=656, PETRI_PLACES=168, PETRI_TRANSITIONS=95} [2024-06-03 20:06:04,116 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-03 20:06:04,116 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 95 transitions, 656 flow [2024-06-03 20:06:04,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:04,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:04,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:04,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2024-06-03 20:06:04,117 INFO L420 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:04,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:04,117 INFO L85 PathProgramCache]: Analyzing trace with hash -385461003, now seen corresponding path program 9 times [2024-06-03 20:06:04,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:04,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392440021] [2024-06-03 20:06:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:04,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:05,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:05,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392440021] [2024-06-03 20:06:05,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392440021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:05,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:05,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:05,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164007791] [2024-06-03 20:06:05,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:05,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:05,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:05,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:05,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:05,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:05,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 95 transitions, 656 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:05,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:05,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:05,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:06,101 INFO L124 PetriNetUnfolderBase]: 211/442 cut-off events. [2024-06-03 20:06:06,101 INFO L125 PetriNetUnfolderBase]: For 24754/24754 co-relation queries the response was YES. [2024-06-03 20:06:06,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1799 conditions, 442 events. 211/442 cut-off events. For 24754/24754 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2006 event pairs, 36 based on Foata normal form. 6/448 useless extension candidates. Maximal degree in co-relation 1716. Up to 226 conditions per place. [2024-06-03 20:06:06,104 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 62 selfloop transitions, 34 changer transitions 12/110 dead transitions. [2024-06-03 20:06:06,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 110 transitions, 910 flow [2024-06-03 20:06:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-03 20:06:06,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-03 20:06:06,104 INFO L175 Difference]: Start difference. First operand has 168 places, 95 transitions, 656 flow. Second operand 11 states and 107 transitions. [2024-06-03 20:06:06,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 110 transitions, 910 flow [2024-06-03 20:06:06,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 110 transitions, 836 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 20:06:06,136 INFO L231 Difference]: Finished difference. Result has 160 places, 91 transitions, 635 flow [2024-06-03 20:06:06,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=635, PETRI_PLACES=160, PETRI_TRANSITIONS=91} [2024-06-03 20:06:06,137 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-03 20:06:06,137 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 91 transitions, 635 flow [2024-06-03 20:06:06,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:06,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:06,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:06,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2024-06-03 20:06:06,137 INFO L420 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:06,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:06,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1125790641, now seen corresponding path program 10 times [2024-06-03 20:06:06,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:06,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032177369] [2024-06-03 20:06:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:06,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:07,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:07,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032177369] [2024-06-03 20:06:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032177369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:07,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:07,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:07,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028657395] [2024-06-03 20:06:07,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:07,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:07,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:07,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:07,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:07,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:07,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 91 transitions, 635 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:07,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:07,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:07,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:08,171 INFO L124 PetriNetUnfolderBase]: 197/420 cut-off events. [2024-06-03 20:06:08,171 INFO L125 PetriNetUnfolderBase]: For 21764/21764 co-relation queries the response was YES. [2024-06-03 20:06:08,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1709 conditions, 420 events. 197/420 cut-off events. For 21764/21764 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1885 event pairs, 30 based on Foata normal form. 6/426 useless extension candidates. Maximal degree in co-relation 1630. Up to 216 conditions per place. [2024-06-03 20:06:08,173 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 55 selfloop transitions, 32 changer transitions 17/106 dead transitions. [2024-06-03 20:06:08,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 106 transitions, 881 flow [2024-06-03 20:06:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:08,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-03 20:06:08,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-03 20:06:08,174 INFO L175 Difference]: Start difference. First operand has 160 places, 91 transitions, 635 flow. Second operand 11 states and 108 transitions. [2024-06-03 20:06:08,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 106 transitions, 881 flow [2024-06-03 20:06:08,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 106 transitions, 807 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:06:08,206 INFO L231 Difference]: Finished difference. Result has 156 places, 84 transitions, 597 flow [2024-06-03 20:06:08,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=597, PETRI_PLACES=156, PETRI_TRANSITIONS=84} [2024-06-03 20:06:08,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-03 20:06:08,206 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 84 transitions, 597 flow [2024-06-03 20:06:08,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:08,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:08,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:08,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2024-06-03 20:06:08,206 INFO L420 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:08,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:08,207 INFO L85 PathProgramCache]: Analyzing trace with hash -393473577, now seen corresponding path program 11 times [2024-06-03 20:06:08,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:08,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751742597] [2024-06-03 20:06:08,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:08,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:10,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:10,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751742597] [2024-06-03 20:06:10,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751742597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:10,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:10,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:10,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32736810] [2024-06-03 20:06:10,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:10,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:10,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:10,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:10,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:10,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:10,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 84 transitions, 597 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:10,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:10,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:10,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:10,573 INFO L124 PetriNetUnfolderBase]: 184/393 cut-off events. [2024-06-03 20:06:10,573 INFO L125 PetriNetUnfolderBase]: For 20354/20354 co-relation queries the response was YES. [2024-06-03 20:06:10,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 393 events. 184/393 cut-off events. For 20354/20354 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1718 event pairs, 36 based on Foata normal form. 6/399 useless extension candidates. Maximal degree in co-relation 1544. Up to 206 conditions per place. [2024-06-03 20:06:10,576 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 26 changer transitions 14/99 dead transitions. [2024-06-03 20:06:10,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 99 transitions, 829 flow [2024-06-03 20:06:10,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-03 20:06:10,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-03 20:06:10,576 INFO L175 Difference]: Start difference. First operand has 156 places, 84 transitions, 597 flow. Second operand 11 states and 107 transitions. [2024-06-03 20:06:10,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 99 transitions, 829 flow [2024-06-03 20:06:10,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 99 transitions, 753 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 20:06:10,600 INFO L231 Difference]: Finished difference. Result has 146 places, 79 transitions, 553 flow [2024-06-03 20:06:10,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=553, PETRI_PLACES=146, PETRI_TRANSITIONS=79} [2024-06-03 20:06:10,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-03 20:06:10,601 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 79 transitions, 553 flow [2024-06-03 20:06:10,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:10,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:10,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:10,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2024-06-03 20:06:10,601 INFO L420 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:10,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:10,601 INFO L85 PathProgramCache]: Analyzing trace with hash 485748757, now seen corresponding path program 12 times [2024-06-03 20:06:10,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:10,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307013058] [2024-06-03 20:06:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:10,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:12,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:12,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307013058] [2024-06-03 20:06:12,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307013058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:12,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:12,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:12,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221249835] [2024-06-03 20:06:12,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:12,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:12,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:12,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:12,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:12,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:12,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 79 transitions, 553 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:12,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:12,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:12,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:12,696 INFO L124 PetriNetUnfolderBase]: 173/372 cut-off events. [2024-06-03 20:06:12,696 INFO L125 PetriNetUnfolderBase]: For 17016/17016 co-relation queries the response was YES. [2024-06-03 20:06:12,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 372 events. 173/372 cut-off events. For 17016/17016 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1583 event pairs, 34 based on Foata normal form. 6/378 useless extension candidates. Maximal degree in co-relation 1436. Up to 178 conditions per place. [2024-06-03 20:06:12,697 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 47 selfloop transitions, 18 changer transitions 27/94 dead transitions. [2024-06-03 20:06:12,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 94 transitions, 773 flow [2024-06-03 20:06:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:12,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-03 20:06:12,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29829545454545453 [2024-06-03 20:06:12,698 INFO L175 Difference]: Start difference. First operand has 146 places, 79 transitions, 553 flow. Second operand 11 states and 105 transitions. [2024-06-03 20:06:12,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 94 transitions, 773 flow [2024-06-03 20:06:12,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 94 transitions, 713 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:06:12,718 INFO L231 Difference]: Finished difference. Result has 140 places, 65 transitions, 462 flow [2024-06-03 20:06:12,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=462, PETRI_PLACES=140, PETRI_TRANSITIONS=65} [2024-06-03 20:06:12,718 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-03 20:06:12,719 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 65 transitions, 462 flow [2024-06-03 20:06:12,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:12,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:12,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:12,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2024-06-03 20:06:12,719 INFO L420 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:12,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1753942765, now seen corresponding path program 13 times [2024-06-03 20:06:12,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:12,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67103285] [2024-06-03 20:06:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:12,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:14,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:14,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:14,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67103285] [2024-06-03 20:06:14,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67103285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:14,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:14,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:14,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952998486] [2024-06-03 20:06:14,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:14,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:14,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:14,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:14,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:14,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:14,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 65 transitions, 462 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:14,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:14,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:14,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:14,806 INFO L124 PetriNetUnfolderBase]: 145/309 cut-off events. [2024-06-03 20:06:14,806 INFO L125 PetriNetUnfolderBase]: For 15109/15109 co-relation queries the response was YES. [2024-06-03 20:06:14,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 309 events. 145/309 cut-off events. For 15109/15109 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1243 event pairs, 31 based on Foata normal form. 6/315 useless extension candidates. Maximal degree in co-relation 1221. Up to 214 conditions per place. [2024-06-03 20:06:14,807 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 15 changer transitions 12/80 dead transitions. [2024-06-03 20:06:14,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 80 transitions, 656 flow [2024-06-03 20:06:14,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:14,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-03 20:06:14,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-03 20:06:14,808 INFO L175 Difference]: Start difference. First operand has 140 places, 65 transitions, 462 flow. Second operand 11 states and 106 transitions. [2024-06-03 20:06:14,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 80 transitions, 656 flow [2024-06-03 20:06:14,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 80 transitions, 590 flow, removed 13 selfloop flow, removed 19 redundant places. [2024-06-03 20:06:14,820 INFO L231 Difference]: Finished difference. Result has 114 places, 61 transitions, 409 flow [2024-06-03 20:06:14,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=409, PETRI_PLACES=114, PETRI_TRANSITIONS=61} [2024-06-03 20:06:14,820 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-03 20:06:14,820 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 61 transitions, 409 flow [2024-06-03 20:06:14,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:14,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:14,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:14,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2024-06-03 20:06:14,821 INFO L420 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:14,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:14,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1484255903, now seen corresponding path program 14 times [2024-06-03 20:06:14,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:14,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905253541] [2024-06-03 20:06:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:14,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:15,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:15,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905253541] [2024-06-03 20:06:15,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905253541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:15,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:15,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:06:15,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824080605] [2024-06-03 20:06:15,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:15,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:06:15,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:06:15,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:06:16,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:16,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 61 transitions, 409 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:16,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:16,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:16,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:16,325 INFO L124 PetriNetUnfolderBase]: 136/290 cut-off events. [2024-06-03 20:06:16,326 INFO L125 PetriNetUnfolderBase]: For 8743/8743 co-relation queries the response was YES. [2024-06-03 20:06:16,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 290 events. 136/290 cut-off events. For 8743/8743 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1137 event pairs, 28 based on Foata normal form. 6/296 useless extension candidates. Maximal degree in co-relation 1088. Up to 214 conditions per place. [2024-06-03 20:06:16,327 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 48 selfloop transitions, 13 changer transitions 13/76 dead transitions. [2024-06-03 20:06:16,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 76 transitions, 593 flow [2024-06-03 20:06:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-03 20:06:16,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2838541666666667 [2024-06-03 20:06:16,327 INFO L175 Difference]: Start difference. First operand has 114 places, 61 transitions, 409 flow. Second operand 12 states and 109 transitions. [2024-06-03 20:06:16,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 76 transitions, 593 flow [2024-06-03 20:06:16,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 76 transitions, 555 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 20:06:16,337 INFO L231 Difference]: Finished difference. Result has 109 places, 56 transitions, 366 flow [2024-06-03 20:06:16,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=366, PETRI_PLACES=109, PETRI_TRANSITIONS=56} [2024-06-03 20:06:16,337 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-03 20:06:16,337 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 56 transitions, 366 flow [2024-06-03 20:06:16,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:16,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:16,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:16,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2024-06-03 20:06:16,338 INFO L420 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:16,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:16,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1761023903, now seen corresponding path program 15 times [2024-06-03 20:06:16,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:16,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625618450] [2024-06-03 20:06:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:17,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:17,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625618450] [2024-06-03 20:06:17,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625618450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:17,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:17,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:17,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575949256] [2024-06-03 20:06:17,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:17,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:17,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:17,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:17,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:17,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:17,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 56 transitions, 366 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:17,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:17,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:17,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:18,219 INFO L124 PetriNetUnfolderBase]: 123/267 cut-off events. [2024-06-03 20:06:18,219 INFO L125 PetriNetUnfolderBase]: For 7385/7385 co-relation queries the response was YES. [2024-06-03 20:06:18,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1037 conditions, 267 events. 123/267 cut-off events. For 7385/7385 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1005 event pairs, 26 based on Foata normal form. 6/273 useless extension candidates. Maximal degree in co-relation 984. Up to 194 conditions per place. [2024-06-03 20:06:18,220 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 44 selfloop transitions, 8 changer transitions 16/70 dead transitions. [2024-06-03 20:06:18,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 70 transitions, 534 flow [2024-06-03 20:06:18,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:18,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-03 20:06:18,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2869318181818182 [2024-06-03 20:06:18,221 INFO L175 Difference]: Start difference. First operand has 109 places, 56 transitions, 366 flow. Second operand 11 states and 101 transitions. [2024-06-03 20:06:18,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 70 transitions, 534 flow [2024-06-03 20:06:18,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 70 transitions, 477 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-06-03 20:06:18,228 INFO L231 Difference]: Finished difference. Result has 100 places, 50 transitions, 291 flow [2024-06-03 20:06:18,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=291, PETRI_PLACES=100, PETRI_TRANSITIONS=50} [2024-06-03 20:06:18,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-03 20:06:18,228 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 50 transitions, 291 flow [2024-06-03 20:06:18,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:18,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:18,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:18,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2024-06-03 20:06:18,228 INFO L420 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:18,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:18,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1532297725, now seen corresponding path program 16 times [2024-06-03 20:06:18,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:18,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895760977] [2024-06-03 20:06:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:18,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:20,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:20,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895760977] [2024-06-03 20:06:20,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895760977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:20,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:20,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:20,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701983329] [2024-06-03 20:06:20,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:20,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:20,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:20,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:20,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:20,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:20,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 50 transitions, 291 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:20,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:20,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:20,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:20,689 INFO L124 PetriNetUnfolderBase]: 108/238 cut-off events. [2024-06-03 20:06:20,689 INFO L125 PetriNetUnfolderBase]: For 6517/6517 co-relation queries the response was YES. [2024-06-03 20:06:20,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 238 events. 108/238 cut-off events. For 6517/6517 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 846 event pairs, 31 based on Foata normal form. 6/244 useless extension candidates. Maximal degree in co-relation 846. Up to 126 conditions per place. [2024-06-03 20:06:20,690 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 35 selfloop transitions, 16 changer transitions 9/62 dead transitions. [2024-06-03 20:06:20,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 62 transitions, 441 flow [2024-06-03 20:06:20,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:06:20,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:06:20,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-03 20:06:20,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-03 20:06:20,691 INFO L175 Difference]: Start difference. First operand has 100 places, 50 transitions, 291 flow. Second operand 10 states and 95 transitions. [2024-06-03 20:06:20,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 62 transitions, 441 flow [2024-06-03 20:06:20,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 62 transitions, 406 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 20:06:20,696 INFO L231 Difference]: Finished difference. Result has 91 places, 47 transitions, 277 flow [2024-06-03 20:06:20,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=277, PETRI_PLACES=91, PETRI_TRANSITIONS=47} [2024-06-03 20:06:20,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-03 20:06:20,696 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 47 transitions, 277 flow [2024-06-03 20:06:20,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:20,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:20,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:20,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2024-06-03 20:06:20,696 INFO L420 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:20,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:20,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1526591631, now seen corresponding path program 17 times [2024-06-03 20:06:20,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:20,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201368425] [2024-06-03 20:06:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:20,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:22,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:22,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201368425] [2024-06-03 20:06:22,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201368425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:22,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:22,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:06:22,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126883886] [2024-06-03 20:06:22,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:22,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:06:22,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:06:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:06:22,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:22,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 47 transitions, 277 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:22,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:22,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:22,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:22,537 INFO L124 PetriNetUnfolderBase]: 98/220 cut-off events. [2024-06-03 20:06:22,537 INFO L125 PetriNetUnfolderBase]: For 5407/5407 co-relation queries the response was YES. [2024-06-03 20:06:22,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 220 events. 98/220 cut-off events. For 5407/5407 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 761 event pairs, 25 based on Foata normal form. 6/226 useless extension candidates. Maximal degree in co-relation 774. Up to 128 conditions per place. [2024-06-03 20:06:22,538 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 37 selfloop transitions, 11 changer transitions 11/61 dead transitions. [2024-06-03 20:06:22,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 61 transitions, 427 flow [2024-06-03 20:06:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:22,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-03 20:06:22,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29261363636363635 [2024-06-03 20:06:22,538 INFO L175 Difference]: Start difference. First operand has 91 places, 47 transitions, 277 flow. Second operand 11 states and 103 transitions. [2024-06-03 20:06:22,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 61 transitions, 427 flow [2024-06-03 20:06:22,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 61 transitions, 389 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:06:22,543 INFO L231 Difference]: Finished difference. Result has 88 places, 42 transitions, 241 flow [2024-06-03 20:06:22,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=241, PETRI_PLACES=88, PETRI_TRANSITIONS=42} [2024-06-03 20:06:22,543 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-03 20:06:22,544 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 42 transitions, 241 flow [2024-06-03 20:06:22,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:22,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:22,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:22,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2024-06-03 20:06:22,544 INFO L420 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:22,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:22,544 INFO L85 PathProgramCache]: Analyzing trace with hash -283983775, now seen corresponding path program 18 times [2024-06-03 20:06:22,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:22,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342980475] [2024-06-03 20:06:22,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:22,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:23,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:23,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342980475] [2024-06-03 20:06:23,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342980475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:23,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:23,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:06:23,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788541039] [2024-06-03 20:06:23,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:23,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:06:23,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:23,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:06:23,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:06:23,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:23,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 42 transitions, 241 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:23,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:23,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:23,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:23,986 INFO L124 PetriNetUnfolderBase]: 85/193 cut-off events. [2024-06-03 20:06:23,986 INFO L125 PetriNetUnfolderBase]: For 4695/4695 co-relation queries the response was YES. [2024-06-03 20:06:23,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 193 events. 85/193 cut-off events. For 4695/4695 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 619 event pairs, 18 based on Foata normal form. 6/199 useless extension candidates. Maximal degree in co-relation 680. Up to 123 conditions per place. [2024-06-03 20:06:23,987 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 31 selfloop transitions, 6 changer transitions 18/57 dead transitions. [2024-06-03 20:06:23,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 57 transitions, 383 flow [2024-06-03 20:06:23,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:23,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:23,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-06-03 20:06:23,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2734375 [2024-06-03 20:06:23,987 INFO L175 Difference]: Start difference. First operand has 88 places, 42 transitions, 241 flow. Second operand 12 states and 105 transitions. [2024-06-03 20:06:23,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 57 transitions, 383 flow [2024-06-03 20:06:23,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 57 transitions, 351 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-03 20:06:23,991 INFO L231 Difference]: Finished difference. Result has 81 places, 36 transitions, 195 flow [2024-06-03 20:06:23,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=195, PETRI_PLACES=81, PETRI_TRANSITIONS=36} [2024-06-03 20:06:23,991 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-03 20:06:23,991 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 36 transitions, 195 flow [2024-06-03 20:06:23,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:23,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:23,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:23,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2024-06-03 20:06:23,991 INFO L420 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:23,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:23,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1094068939, now seen corresponding path program 19 times [2024-06-03 20:06:23,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:23,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463039007] [2024-06-03 20:06:23,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:23,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:25,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:25,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463039007] [2024-06-03 20:06:25,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463039007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:25,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:25,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:25,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35461399] [2024-06-03 20:06:25,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:25,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:25,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:25,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:25,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:25,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:25,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 36 transitions, 195 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:25,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:25,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:25,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:26,003 INFO L124 PetriNetUnfolderBase]: 69/161 cut-off events. [2024-06-03 20:06:26,003 INFO L125 PetriNetUnfolderBase]: For 3437/3437 co-relation queries the response was YES. [2024-06-03 20:06:26,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 161 events. 69/161 cut-off events. For 3437/3437 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 474 event pairs, 16 based on Foata normal form. 6/167 useless extension candidates. Maximal degree in co-relation 556. Up to 87 conditions per place. [2024-06-03 20:06:26,004 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 28 selfloop transitions, 9 changer transitions 12/51 dead transitions. [2024-06-03 20:06:26,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 51 transitions, 331 flow [2024-06-03 20:06:26,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:26,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-03 20:06:26,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2869318181818182 [2024-06-03 20:06:26,004 INFO L175 Difference]: Start difference. First operand has 81 places, 36 transitions, 195 flow. Second operand 11 states and 101 transitions. [2024-06-03 20:06:26,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 51 transitions, 331 flow [2024-06-03 20:06:26,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 51 transitions, 298 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-03 20:06:26,007 INFO L231 Difference]: Finished difference. Result has 70 places, 32 transitions, 170 flow [2024-06-03 20:06:26,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=170, PETRI_PLACES=70, PETRI_TRANSITIONS=32} [2024-06-03 20:06:26,007 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-03 20:06:26,007 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 32 transitions, 170 flow [2024-06-03 20:06:26,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:26,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:26,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:26,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2024-06-03 20:06:26,007 INFO L420 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:26,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash -864380329, now seen corresponding path program 20 times [2024-06-03 20:06:26,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:26,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323819489] [2024-06-03 20:06:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:26,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:27,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:27,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323819489] [2024-06-03 20:06:27,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323819489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:27,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:27,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:27,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121836204] [2024-06-03 20:06:27,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:27,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:27,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:27,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:27,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:27,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:27,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 32 transitions, 170 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:27,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:27,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:27,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:27,786 INFO L124 PetriNetUnfolderBase]: 60/142 cut-off events. [2024-06-03 20:06:27,786 INFO L125 PetriNetUnfolderBase]: For 2390/2390 co-relation queries the response was YES. [2024-06-03 20:06:27,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 142 events. 60/142 cut-off events. For 2390/2390 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 385 event pairs, 16 based on Foata normal form. 6/148 useless extension candidates. Maximal degree in co-relation 476. Up to 77 conditions per place. [2024-06-03 20:06:27,787 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 25 selfloop transitions, 8 changer transitions 11/46 dead transitions. [2024-06-03 20:06:27,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 46 transitions, 288 flow [2024-06-03 20:06:27,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-03 20:06:27,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2784090909090909 [2024-06-03 20:06:27,788 INFO L175 Difference]: Start difference. First operand has 70 places, 32 transitions, 170 flow. Second operand 11 states and 98 transitions. [2024-06-03 20:06:27,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 46 transitions, 288 flow [2024-06-03 20:06:27,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 46 transitions, 262 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 20:06:27,789 INFO L231 Difference]: Finished difference. Result has 64 places, 29 transitions, 149 flow [2024-06-03 20:06:27,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=149, PETRI_PLACES=64, PETRI_TRANSITIONS=29} [2024-06-03 20:06:27,789 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-03 20:06:27,790 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 29 transitions, 149 flow [2024-06-03 20:06:27,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:27,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:27,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:27,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2024-06-03 20:06:27,790 INFO L420 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:27,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:27,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1413551597, now seen corresponding path program 21 times [2024-06-03 20:06:27,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:27,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312326431] [2024-06-03 20:06:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:27,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:29,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:29,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312326431] [2024-06-03 20:06:29,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312326431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:29,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:29,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:29,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890359389] [2024-06-03 20:06:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:29,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:29,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:29,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:29,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:29,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:29,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 29 transitions, 149 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:29,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:29,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:29,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:29,715 INFO L124 PetriNetUnfolderBase]: 50/124 cut-off events. [2024-06-03 20:06:29,715 INFO L125 PetriNetUnfolderBase]: For 1720/1720 co-relation queries the response was YES. [2024-06-03 20:06:29,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 124 events. 50/124 cut-off events. For 1720/1720 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 304 event pairs, 17 based on Foata normal form. 6/130 useless extension candidates. Maximal degree in co-relation 406. Up to 61 conditions per place. [2024-06-03 20:06:29,715 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 18 selfloop transitions, 5 changer transitions 17/42 dead transitions. [2024-06-03 20:06:29,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 42 transitions, 257 flow [2024-06-03 20:06:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:29,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-03 20:06:29,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2727272727272727 [2024-06-03 20:06:29,716 INFO L175 Difference]: Start difference. First operand has 64 places, 29 transitions, 149 flow. Second operand 11 states and 96 transitions. [2024-06-03 20:06:29,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 42 transitions, 257 flow [2024-06-03 20:06:29,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 42 transitions, 235 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:06:29,717 INFO L231 Difference]: Finished difference. Result has 60 places, 23 transitions, 112 flow [2024-06-03 20:06:29,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=112, PETRI_PLACES=60, PETRI_TRANSITIONS=23} [2024-06-03 20:06:29,718 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-03 20:06:29,718 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 23 transitions, 112 flow [2024-06-03 20:06:29,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:29,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:29,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:29,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2024-06-03 20:06:29,718 INFO L420 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:06:29,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:29,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1213901633, now seen corresponding path program 22 times [2024-06-03 20:06:29,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:29,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325403392] [2024-06-03 20:06:29,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:29,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:31,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:31,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325403392] [2024-06-03 20:06:31,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325403392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:31,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:31,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:31,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23877058] [2024-06-03 20:06:31,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:31,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:31,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:31,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:31,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:31,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 20:06:31,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 23 transitions, 112 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:31,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:31,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 20:06:31,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:31,399 INFO L124 PetriNetUnfolderBase]: 24/66 cut-off events. [2024-06-03 20:06:31,399 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-06-03 20:06:31,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 66 events. 24/66 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 1 based on Foata normal form. 6/72 useless extension candidates. Maximal degree in co-relation 170. Up to 24 conditions per place. [2024-06-03 20:06:31,400 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-03 20:06:31,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 31 transitions, 156 flow [2024-06-03 20:06:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:31,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:31,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 85 transitions. [2024-06-03 20:06:31,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24147727272727273 [2024-06-03 20:06:31,400 INFO L175 Difference]: Start difference. First operand has 60 places, 23 transitions, 112 flow. Second operand 11 states and 85 transitions. [2024-06-03 20:06:31,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 31 transitions, 156 flow [2024-06-03 20:06:31,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 126 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-03 20:06:31,401 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-03 20:06:31,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-03 20:06:31,401 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-03 20:06:31,401 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-03 20:06:31,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:06:31,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 20:06:31,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 20:06:31,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 20:06:31,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 20:06:31,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2024-06-03 20:06:31,410 INFO L445 BasicCegarLoop]: Path program histogram: [79, 36, 32, 22, 18, 17, 14, 14, 9, 9, 7, 6, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:31,412 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 20:06:31,413 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 20:06:31,416 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 20:06:31,416 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 20:06:31,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 08:06:31 BasicIcfg [2024-06-03 20:06:31,417 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 20:06:31,418 INFO L158 Benchmark]: Toolchain (without parser) took 582126.91ms. Allocated memory was 146.8MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 87.7MB in the beginning and 841.6MB in the end (delta: -753.9MB). Peak memory consumption was 760.7MB. Max. memory is 16.1GB. [2024-06-03 20:06:31,421 INFO L158 Benchmark]: Witness Parser took 0.30ms. Allocated memory is still 146.8MB. Free memory is still 110.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:06:31,422 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory was 104.7MB in the beginning and 104.5MB in the end (delta: 193.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:06:31,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 608.33ms. Allocated memory is still 146.8MB. Free memory was 87.7MB in the beginning and 107.6MB in the end (delta: -19.9MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2024-06-03 20:06:31,422 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.58ms. Allocated memory is still 146.8MB. Free memory was 107.6MB in the beginning and 104.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:06:31,422 INFO L158 Benchmark]: Boogie Preprocessor took 65.61ms. Allocated memory is still 146.8MB. Free memory was 104.1MB in the beginning and 100.6MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:06:31,422 INFO L158 Benchmark]: RCFGBuilder took 661.42ms. Allocated memory was 146.8MB in the beginning and 188.7MB in the end (delta: 41.9MB). Free memory was 99.9MB in the beginning and 139.8MB in the end (delta: -39.8MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. [2024-06-03 20:06:31,422 INFO L158 Benchmark]: TraceAbstraction took 580717.36ms. Allocated memory was 188.7MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 138.7MB in the beginning and 841.6MB in the end (delta: -702.9MB). Peak memory consumption was 768.2MB. Max. memory is 16.1GB. [2024-06-03 20:06:31,423 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.30ms. Allocated memory is still 146.8MB. Free memory is still 110.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory was 104.7MB in the beginning and 104.5MB in the end (delta: 193.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 608.33ms. Allocated memory is still 146.8MB. Free memory was 87.7MB in the beginning and 107.6MB in the end (delta: -19.9MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.58ms. Allocated memory is still 146.8MB. Free memory was 107.6MB in the beginning and 104.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.61ms. Allocated memory is still 146.8MB. Free memory was 104.1MB in the beginning and 100.6MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 661.42ms. Allocated memory was 146.8MB in the beginning and 188.7MB in the end (delta: 41.9MB). Free memory was 99.9MB in the beginning and 139.8MB in the end (delta: -39.8MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. * TraceAbstraction took 580717.36ms. Allocated memory was 188.7MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 138.7MB in the beginning and 841.6MB in the end (delta: -702.9MB). Peak memory consumption was 768.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 580.6s, OverallIterations: 297, TraceHistogramMax: 1, PathProgramHistogramMax: 79, EmptinessCheckTime: 0.0s, AutomataDifference: 283.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15867 SdHoareTripleChecker+Valid, 71.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13810 mSDsluCounter, 13719 SdHoareTripleChecker+Invalid, 61.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11813 mSDsCounter, 5766 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 116141 IncrementalHoareTripleChecker+Invalid, 121907 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5766 mSolverCounterUnsat, 1906 mSDtfsCounter, 116141 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3563 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3555 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6801 ImplicationChecksByTransitivity, 86.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4886occurred in iteration=173, InterpolantAutomatonStates: 2954, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 292.5s InterpolantComputationTime, 5250 NumberOfCodeBlocks, 5250 NumberOfCodeBlocksAsserted, 297 NumberOfCheckSat, 4953 ConstructedInterpolants, 0 QuantifiedInterpolants, 198765 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 297 InterpolantComputations, 297 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 20:06:31,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE