./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi001_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.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi001_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/rfi001_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi001_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-7724a2d-m [2024-06-28 03:38:54,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:38:55,057 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:38:55,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:38:55,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:38:55,095 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:38:55,096 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:38:55,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:38:55,097 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:38:55,102 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:38:55,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:38:55,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:38:55,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:38:55,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:38:55,106 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:38:55,106 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:38:55,106 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:38:55,107 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:38:55,107 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:38:55,107 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:38:55,107 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:38:55,108 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:38:55,108 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:38:55,108 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:38:55,109 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:38:55,109 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:38:55,109 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:38:55,109 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:38:55,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:38:55,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:38:55,111 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:38:55,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:38:55,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:38:55,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:38:55,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:38:55,112 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:38:55,113 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:38:55,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:38:55,113 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:38:55,113 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:38:55,114 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:38:55,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:38:55,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:38:55,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:38:55,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:38:55,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:38:55,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:38:55,411 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:38:55,411 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:38:55,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi001_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 03:38:55,581 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:38:55,581 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:38:55,582 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:38:56,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:38:57,065 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:38:57,066 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:38:57,088 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/092302fff/825203a27ec84230a5aa4071f5fa4033/FLAGad4701e5a [2024-06-28 03:38:57,100 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/092302fff/825203a27ec84230a5aa4071f5fa4033 [2024-06-28 03:38:57,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:38:57,101 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:38:57,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:38:57,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:38:57,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:38:57,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:38:55" (1/2) ... [2024-06-28 03:38:57,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d5f7da7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:57, skipping insertion in model container [2024-06-28 03:38:57,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:38:55" (1/2) ... [2024-06-28 03:38:57,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@34586499 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:57, skipping insertion in model container [2024-06-28 03:38:57,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:38:57" (2/2) ... [2024-06-28 03:38:57,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d5f7da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57, skipping insertion in model container [2024-06-28 03:38:57,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:38:57" (2/2) ... [2024-06-28 03:38:57,111 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:38:57,177 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:38:57,178 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] (((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (z == 0 || z == 1)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:38:57,178 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] (((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (z == 0 || z == 1)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:38:57,179 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:38:57,179 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-28 03:38:57,229 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:38:57,599 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:38:57,615 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:38:57,738 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:38:57,769 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:38:57,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57 WrapperNode [2024-06-28 03:38:57,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:38:57,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:38:57,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:38:57,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:38:57,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57" (1/1) ... [2024-06-28 03:38:57,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57" (1/1) ... [2024-06-28 03:38:57,858 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 114 [2024-06-28 03:38:57,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:38:57,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:38:57,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:38:57,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:38:57,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57" (1/1) ... [2024-06-28 03:38:57,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57" (1/1) ... [2024-06-28 03:38:57,879 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57" (1/1) ... [2024-06-28 03:38:57,892 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]. [2024-06-28 03:38:57,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57" (1/1) ... [2024-06-28 03:38:57,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57" (1/1) ... [2024-06-28 03:38:57,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57" (1/1) ... [2024-06-28 03:38:57,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57" (1/1) ... [2024-06-28 03:38:57,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57" (1/1) ... [2024-06-28 03:38:57,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57" (1/1) ... [2024-06-28 03:38:57,939 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:38:57,940 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:38:57,940 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:38:57,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:38:57,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57" (1/1) ... [2024-06-28 03:38:57,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:38:57,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:38:57,985 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) [2024-06-28 03:38:58,012 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 [2024-06-28 03:38:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:38:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:38:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:38:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:38:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:38:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:38:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:38:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:38:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:38:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:38:58,036 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:38:58,203 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:38:58,205 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:38:58,492 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:38:58,492 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:38:58,665 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:38:58,665 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:38:58,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:38:58 BoogieIcfgContainer [2024-06-28 03:38:58,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:38:58,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:38:58,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:38:58,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:38:58,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:38:55" (1/4) ... [2024-06-28 03:38:58,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3be74 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:38:58, skipping insertion in model container [2024-06-28 03:38:58,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:38:57" (2/4) ... [2024-06-28 03:38:58,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3be74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:38:58, skipping insertion in model container [2024-06-28 03:38:58,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:57" (3/4) ... [2024-06-28 03:38:58,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3be74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:38:58, skipping insertion in model container [2024-06-28 03:38:58,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:38:58" (4/4) ... [2024-06-28 03:38:58,683 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:38:58,699 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:38:58,699 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:38:58,700 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:38:58,743 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:38:58,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 03:38:58,813 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 03:38:58,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:38:58,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:38:58,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 03:38:58,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 03:38:58,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:38:58,834 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;@45c9a955, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:38:58,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:38:58,838 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:38:58,839 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:38:58,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:38:58,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:58,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:38:58,840 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)] === [2024-06-28 03:38:58,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:58,845 INFO L85 PathProgramCache]: Analyzing trace with hash 332828771, now seen corresponding path program 1 times [2024-06-28 03:38:58,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:58,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278020958] [2024-06-28 03:38:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:58,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:59,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:59,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278020958] [2024-06-28 03:38:59,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278020958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:59,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:59,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:38:59,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394028586] [2024-06-28 03:38:59,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:59,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:38:59,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:59,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:38:59,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:38:59,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 03:38:59,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2024-06-28 03:38:59,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:59,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 03:38:59,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:00,003 INFO L124 PetriNetUnfolderBase]: 189/351 cut-off events. [2024-06-28 03:39:00,004 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 03:39:00,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 351 events. 189/351 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1290 event pairs, 115 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 696. Up to 333 conditions per place. [2024-06-28 03:39:00,010 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 03:39:00,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 117 flow [2024-06-28 03:39:00,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:39:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:39:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-28 03:39:00,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-28 03:39:00,025 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-28 03:39:00,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 117 flow [2024-06-28 03:39:00,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:39:00,029 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 03:39:00,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-28 03:39:00,034 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 03:39:00,035 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 03:39:00,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2024-06-28 03:39:00,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:00,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:00,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:39:00,036 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)] === [2024-06-28 03:39:00,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:00,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2020889858, now seen corresponding path program 1 times [2024-06-28 03:39:00,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:00,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807210931] [2024-06-28 03:39:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:00,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:00,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:00,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807210931] [2024-06-28 03:39:00,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807210931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:00,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:00,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:39:00,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670222280] [2024-06-28 03:39:00,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:00,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:39:00,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:00,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:39:00,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:39:00,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 03:39:00,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:00,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:00,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 03:39:00,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:00,780 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-28 03:39:00,780 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-06-28 03:39:00,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 348 events. 186/348 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1271 event pairs, 94 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-28 03:39:00,786 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 03:39:00,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-28 03:39:00,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:39:00,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:39:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-28 03:39:00,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-06-28 03:39:00,791 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 69 transitions. [2024-06-28 03:39:00,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-28 03:39:00,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:39:00,796 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 03:39:00,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-28 03:39:00,796 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 03:39:00,797 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 03:39:00,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:00,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:00,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:00,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:39:00,798 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)] === [2024-06-28 03:39:00,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:00,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1776923130, now seen corresponding path program 1 times [2024-06-28 03:39:00,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:00,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974836990] [2024-06-28 03:39:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:00,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:01,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:01,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974836990] [2024-06-28 03:39:01,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974836990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:01,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:01,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:39:01,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762280879] [2024-06-28 03:39:01,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:01,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:39:01,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:01,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:39:01,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:39:01,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 03:39:01,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:01,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:01,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 03:39:01,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:01,481 INFO L124 PetriNetUnfolderBase]: 187/354 cut-off events. [2024-06-28 03:39:01,482 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-28 03:39:01,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 354 events. 187/354 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1309 event pairs, 67 based on Foata normal form. 3/355 useless extension candidates. Maximal degree in co-relation 868. Up to 293 conditions per place. [2024-06-28 03:39:01,484 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-28 03:39:01,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 251 flow [2024-06-28 03:39:01,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:39:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:39:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-28 03:39:01,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-28 03:39:01,486 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 90 transitions. [2024-06-28 03:39:01,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 251 flow [2024-06-28 03:39:01,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 242 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:39:01,488 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-28 03:39:01,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-06-28 03:39:01,489 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-28 03:39:01,489 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-28 03:39:01,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:01,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:01,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:01,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:39:01,490 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)] === [2024-06-28 03:39:01,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:01,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1414893681, now seen corresponding path program 1 times [2024-06-28 03:39:01,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:01,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45262456] [2024-06-28 03:39:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:01,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:02,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:02,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:02,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45262456] [2024-06-28 03:39:02,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45262456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:02,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:02,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:39:02,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672253685] [2024-06-28 03:39:02,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:02,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:39:02,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:02,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:39:02,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:39:02,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 03:39:02,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:02,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:02,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 03:39:02,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:02,398 INFO L124 PetriNetUnfolderBase]: 188/356 cut-off events. [2024-06-28 03:39:02,399 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-28 03:39:02,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059 conditions, 356 events. 188/356 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1311 event pairs, 46 based on Foata normal form. 3/357 useless extension candidates. Maximal degree in co-relation 1042. Up to 282 conditions per place. [2024-06-28 03:39:02,402 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 14 changer transitions 0/56 dead transitions. [2024-06-28 03:39:02,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 336 flow [2024-06-28 03:39:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:02,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 03:39:02,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-28 03:39:02,405 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 6 states and 106 transitions. [2024-06-28 03:39:02,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 336 flow [2024-06-28 03:39:02,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 332 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 03:39:02,408 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 214 flow [2024-06-28 03:39:02,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 03:39:02,409 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-28 03:39:02,410 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 214 flow [2024-06-28 03:39:02,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:02,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:02,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:02,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:39:02,411 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)] === [2024-06-28 03:39:02,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:02,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1773879685, now seen corresponding path program 1 times [2024-06-28 03:39:02,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:02,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061410358] [2024-06-28 03:39:02,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:02,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:03,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:03,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061410358] [2024-06-28 03:39:03,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061410358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:03,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:03,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:03,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844129505] [2024-06-28 03:39:03,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:03,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:03,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:03,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:03,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:03,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 03:39:03,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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) [2024-06-28 03:39:03,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:03,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 03:39:03,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:03,423 INFO L124 PetriNetUnfolderBase]: 189/359 cut-off events. [2024-06-28 03:39:03,423 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-28 03:39:03,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 359 events. 189/359 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1327 event pairs, 24 based on Foata normal form. 6/363 useless extension candidates. Maximal degree in co-relation 1172. Up to 259 conditions per place. [2024-06-28 03:39:03,426 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-28 03:39:03,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 382 flow [2024-06-28 03:39:03,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 03:39:03,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391705069124424 [2024-06-28 03:39:03,430 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 214 flow. Second operand 7 states and 117 transitions. [2024-06-28 03:39:03,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 382 flow [2024-06-28 03:39:03,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 350 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:03,436 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 217 flow [2024-06-28 03:39:03,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-28 03:39:03,442 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 03:39:03,442 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 217 flow [2024-06-28 03:39:03,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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) [2024-06-28 03:39:03,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:03,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:03,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:39:03,444 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)] === [2024-06-28 03:39:03,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:03,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1502486617, now seen corresponding path program 1 times [2024-06-28 03:39:03,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:03,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475129437] [2024-06-28 03:39:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:03,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:03,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:03,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475129437] [2024-06-28 03:39:03,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475129437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:03,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:03,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:39:03,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705666490] [2024-06-28 03:39:03,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:03,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:39:03,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:03,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:39:03,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:39:04,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:39:04,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:04,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:04,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:39:04,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:04,242 INFO L124 PetriNetUnfolderBase]: 187/355 cut-off events. [2024-06-28 03:39:04,243 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-28 03:39:04,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 355 events. 187/355 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1302 event pairs, 47 based on Foata normal form. 1/354 useless extension candidates. Maximal degree in co-relation 1217. Up to 329 conditions per place. [2024-06-28 03:39:04,245 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 34 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-06-28 03:39:04,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 309 flow [2024-06-28 03:39:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:39:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:39:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-06-28 03:39:04,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-28 03:39:04,249 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 217 flow. Second operand 5 states and 64 transitions. [2024-06-28 03:39:04,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 309 flow [2024-06-28 03:39:04,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 268 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:04,253 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 193 flow [2024-06-28 03:39:04,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-28 03:39:04,256 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 03:39:04,256 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 193 flow [2024-06-28 03:39:04,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:04,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:04,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:04,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:39:04,257 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)] === [2024-06-28 03:39:04,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash -696182331, now seen corresponding path program 1 times [2024-06-28 03:39:04,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:04,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863588689] [2024-06-28 03:39:04,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:04,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:04,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:04,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863588689] [2024-06-28 03:39:04,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863588689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:04,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:04,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019382066] [2024-06-28 03:39:04,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:04,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:04,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:04,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:04,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:04,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:04,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 193 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) [2024-06-28 03:39:04,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:04,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:04,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:05,179 INFO L124 PetriNetUnfolderBase]: 212/382 cut-off events. [2024-06-28 03:39:05,180 INFO L125 PetriNetUnfolderBase]: For 1031/1031 co-relation queries the response was YES. [2024-06-28 03:39:05,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 382 events. 212/382 cut-off events. For 1031/1031 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1353 event pairs, 55 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 1300. Up to 368 conditions per place. [2024-06-28 03:39:05,183 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 36 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-28 03:39:05,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 303 flow [2024-06-28 03:39:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-28 03:39:05,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:39:05,185 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 193 flow. Second operand 6 states and 69 transitions. [2024-06-28 03:39:05,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 303 flow [2024-06-28 03:39:05,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 288 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:05,187 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 211 flow [2024-06-28 03:39:05,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-28 03:39:05,188 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-28 03:39:05,188 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 211 flow [2024-06-28 03:39:05,189 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) [2024-06-28 03:39:05,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:05,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:05,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:39:05,189 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)] === [2024-06-28 03:39:05,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:05,190 INFO L85 PathProgramCache]: Analyzing trace with hash -479738274, now seen corresponding path program 1 times [2024-06-28 03:39:05,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:05,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722625031] [2024-06-28 03:39:05,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:05,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:05,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:05,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:05,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722625031] [2024-06-28 03:39:05,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722625031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:05,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:05,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:05,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654083697] [2024-06-28 03:39:05,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:05,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:05,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:05,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:05,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:05,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:39:05,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 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) [2024-06-28 03:39:05,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:05,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:39:05,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:06,022 INFO L124 PetriNetUnfolderBase]: 219/407 cut-off events. [2024-06-28 03:39:06,023 INFO L125 PetriNetUnfolderBase]: For 1405/1405 co-relation queries the response was YES. [2024-06-28 03:39:06,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1507 conditions, 407 events. 219/407 cut-off events. For 1405/1405 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1516 event pairs, 57 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 1483. Up to 351 conditions per place. [2024-06-28 03:39:06,026 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2024-06-28 03:39:06,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 427 flow [2024-06-28 03:39:06,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 03:39:06,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-28 03:39:06,028 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 211 flow. Second operand 7 states and 88 transitions. [2024-06-28 03:39:06,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 427 flow [2024-06-28 03:39:06,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 408 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:06,032 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 314 flow [2024-06-28 03:39:06,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=314, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-28 03:39:06,033 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-28 03:39:06,033 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 314 flow [2024-06-28 03:39:06,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 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) [2024-06-28 03:39:06,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:06,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:06,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:39:06,034 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)] === [2024-06-28 03:39:06,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:06,034 INFO L85 PathProgramCache]: Analyzing trace with hash 780651192, now seen corresponding path program 2 times [2024-06-28 03:39:06,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:06,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279674212] [2024-06-28 03:39:06,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:06,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:06,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:06,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279674212] [2024-06-28 03:39:06,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279674212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:06,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:06,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:06,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412416162] [2024-06-28 03:39:06,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:06,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:06,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:06,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:06,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:06,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:39:06,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 314 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 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) [2024-06-28 03:39:06,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:06,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:39:06,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:06,810 INFO L124 PetriNetUnfolderBase]: 216/402 cut-off events. [2024-06-28 03:39:06,810 INFO L125 PetriNetUnfolderBase]: For 1729/1729 co-relation queries the response was YES. [2024-06-28 03:39:06,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 402 events. 216/402 cut-off events. For 1729/1729 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1504 event pairs, 56 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1568. Up to 369 conditions per place. [2024-06-28 03:39:06,814 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 43 selfloop transitions, 9 changer transitions 0/56 dead transitions. [2024-06-28 03:39:06,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 440 flow [2024-06-28 03:39:06,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:06,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:06,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-28 03:39:06,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 03:39:06,815 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 314 flow. Second operand 6 states and 74 transitions. [2024-06-28 03:39:06,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 440 flow [2024-06-28 03:39:06,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 436 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 03:39:06,820 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 345 flow [2024-06-28 03:39:06,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-06-28 03:39:06,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-28 03:39:06,821 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 345 flow [2024-06-28 03:39:06,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 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) [2024-06-28 03:39:06,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:06,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:06,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:39:06,822 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)] === [2024-06-28 03:39:06,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:06,822 INFO L85 PathProgramCache]: Analyzing trace with hash -734173414, now seen corresponding path program 3 times [2024-06-28 03:39:06,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:06,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694930885] [2024-06-28 03:39:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:06,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:07,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:07,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694930885] [2024-06-28 03:39:07,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694930885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:07,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:07,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:07,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129994499] [2024-06-28 03:39:07,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:07,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:07,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:07,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:07,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:07,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:39:07,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 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) [2024-06-28 03:39:07,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:07,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:39:07,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:07,650 INFO L124 PetriNetUnfolderBase]: 209/389 cut-off events. [2024-06-28 03:39:07,650 INFO L125 PetriNetUnfolderBase]: For 2102/2102 co-relation queries the response was YES. [2024-06-28 03:39:07,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 389 events. 209/389 cut-off events. For 2102/2102 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1447 event pairs, 52 based on Foata normal form. 2/389 useless extension candidates. Maximal degree in co-relation 1558. Up to 311 conditions per place. [2024-06-28 03:39:07,653 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 20 changer transitions 0/63 dead transitions. [2024-06-28 03:39:07,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 508 flow [2024-06-28 03:39:07,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:07,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:07,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-28 03:39:07,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43317972350230416 [2024-06-28 03:39:07,655 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 345 flow. Second operand 7 states and 94 transitions. [2024-06-28 03:39:07,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 508 flow [2024-06-28 03:39:07,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 489 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:07,660 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 398 flow [2024-06-28 03:39:07,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-28 03:39:07,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-28 03:39:07,662 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 398 flow [2024-06-28 03:39:07,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 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) [2024-06-28 03:39:07,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:07,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:07,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:39:07,663 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)] === [2024-06-28 03:39:07,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:07,664 INFO L85 PathProgramCache]: Analyzing trace with hash 780659128, now seen corresponding path program 1 times [2024-06-28 03:39:07,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:07,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736923127] [2024-06-28 03:39:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:07,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:08,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:08,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736923127] [2024-06-28 03:39:08,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736923127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:08,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:08,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:08,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150984451] [2024-06-28 03:39:08,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:08,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:08,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:08,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:08,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:08,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:08,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 398 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-28 03:39:08,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:08,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:08,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:08,694 INFO L124 PetriNetUnfolderBase]: 219/396 cut-off events. [2024-06-28 03:39:08,694 INFO L125 PetriNetUnfolderBase]: For 2442/2442 co-relation queries the response was YES. [2024-06-28 03:39:08,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1689 conditions, 396 events. 219/396 cut-off events. For 2442/2442 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1402 event pairs, 56 based on Foata normal form. 3/397 useless extension candidates. Maximal degree in co-relation 1657. Up to 371 conditions per place. [2024-06-28 03:39:08,697 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 50 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2024-06-28 03:39:08,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 548 flow [2024-06-28 03:39:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:08,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-28 03:39:08,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-28 03:39:08,699 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 398 flow. Second operand 7 states and 80 transitions. [2024-06-28 03:39:08,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 548 flow [2024-06-28 03:39:08,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 487 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:08,703 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 378 flow [2024-06-28 03:39:08,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-06-28 03:39:08,704 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-28 03:39:08,705 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 378 flow [2024-06-28 03:39:08,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-28 03:39:08,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:08,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:08,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:39:08,706 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)] === [2024-06-28 03:39:08,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:08,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1986983618, now seen corresponding path program 1 times [2024-06-28 03:39:08,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:08,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805211362] [2024-06-28 03:39:08,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:08,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:09,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:09,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805211362] [2024-06-28 03:39:09,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805211362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:09,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:09,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:09,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490706713] [2024-06-28 03:39:09,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:09,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:09,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:09,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:09,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:09,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:09,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 378 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-28 03:39:09,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:09,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:09,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:09,530 INFO L124 PetriNetUnfolderBase]: 225/406 cut-off events. [2024-06-28 03:39:09,531 INFO L125 PetriNetUnfolderBase]: For 2651/2651 co-relation queries the response was YES. [2024-06-28 03:39:09,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 406 events. 225/406 cut-off events. For 2651/2651 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1444 event pairs, 54 based on Foata normal form. 2/406 useless extension candidates. Maximal degree in co-relation 1687. Up to 315 conditions per place. [2024-06-28 03:39:09,534 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 43 selfloop transitions, 25 changer transitions 0/70 dead transitions. [2024-06-28 03:39:09,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 586 flow [2024-06-28 03:39:09,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:09,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-28 03:39:09,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-28 03:39:09,536 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 378 flow. Second operand 7 states and 89 transitions. [2024-06-28 03:39:09,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 586 flow [2024-06-28 03:39:09,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 70 transitions, 561 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:09,543 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 438 flow [2024-06-28 03:39:09,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-06-28 03:39:09,544 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-28 03:39:09,544 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 438 flow [2024-06-28 03:39:09,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-28 03:39:09,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:09,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:09,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:39:09,545 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)] === [2024-06-28 03:39:09,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:09,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1569378686, now seen corresponding path program 2 times [2024-06-28 03:39:09,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:09,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058244356] [2024-06-28 03:39:09,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:09,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:10,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:10,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058244356] [2024-06-28 03:39:10,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058244356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:10,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:10,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:10,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969761059] [2024-06-28 03:39:10,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:10,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:10,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:10,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:10,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:10,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:10,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-28 03:39:10,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:10,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:10,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:10,388 INFO L124 PetriNetUnfolderBase]: 228/411 cut-off events. [2024-06-28 03:39:10,389 INFO L125 PetriNetUnfolderBase]: For 3064/3064 co-relation queries the response was YES. [2024-06-28 03:39:10,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1850 conditions, 411 events. 228/411 cut-off events. For 3064/3064 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1477 event pairs, 54 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 1817. Up to 392 conditions per place. [2024-06-28 03:39:10,392 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 55 selfloop transitions, 11 changer transitions 0/68 dead transitions. [2024-06-28 03:39:10,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 598 flow [2024-06-28 03:39:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 03:39:10,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-28 03:39:10,393 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 438 flow. Second operand 7 states and 78 transitions. [2024-06-28 03:39:10,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 598 flow [2024-06-28 03:39:10,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 572 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:10,399 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 457 flow [2024-06-28 03:39:10,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=457, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2024-06-28 03:39:10,400 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-28 03:39:10,400 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 457 flow [2024-06-28 03:39:10,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-28 03:39:10,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:10,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:10,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:39:10,401 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)] === [2024-06-28 03:39:10,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:10,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1982341988, now seen corresponding path program 3 times [2024-06-28 03:39:10,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:10,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849982785] [2024-06-28 03:39:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:10,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:10,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:10,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849982785] [2024-06-28 03:39:10,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849982785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:10,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:10,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:10,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149291228] [2024-06-28 03:39:10,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:10,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:10,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:10,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:10,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:11,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:11,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 457 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-28 03:39:11,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:11,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:11,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:11,245 INFO L124 PetriNetUnfolderBase]: 226/408 cut-off events. [2024-06-28 03:39:11,245 INFO L125 PetriNetUnfolderBase]: For 3501/3501 co-relation queries the response was YES. [2024-06-28 03:39:11,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1890 conditions, 408 events. 226/408 cut-off events. For 3501/3501 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1460 event pairs, 54 based on Foata normal form. 1/407 useless extension candidates. Maximal degree in co-relation 1855. Up to 383 conditions per place. [2024-06-28 03:39:11,248 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 54 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2024-06-28 03:39:11,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 625 flow [2024-06-28 03:39:11,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:11,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-28 03:39:11,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-28 03:39:11,249 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 457 flow. Second operand 7 states and 80 transitions. [2024-06-28 03:39:11,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 625 flow [2024-06-28 03:39:11,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 598 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:11,259 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 485 flow [2024-06-28 03:39:11,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=485, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2024-06-28 03:39:11,260 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-28 03:39:11,260 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 485 flow [2024-06-28 03:39:11,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-28 03:39:11,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:11,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:11,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:39:11,261 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)] === [2024-06-28 03:39:11,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:11,262 INFO L85 PathProgramCache]: Analyzing trace with hash -777291083, now seen corresponding path program 1 times [2024-06-28 03:39:11,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:11,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584166696] [2024-06-28 03:39:11,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:11,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:12,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:12,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584166696] [2024-06-28 03:39:12,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584166696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:12,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:12,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:12,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740137001] [2024-06-28 03:39:12,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:12,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:12,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:12,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:12,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:12,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:39:12,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 485 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:12,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:12,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:39:12,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:12,397 INFO L124 PetriNetUnfolderBase]: 214/395 cut-off events. [2024-06-28 03:39:12,398 INFO L125 PetriNetUnfolderBase]: For 4046/4046 co-relation queries the response was YES. [2024-06-28 03:39:12,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1879 conditions, 395 events. 214/395 cut-off events. For 4046/4046 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1427 event pairs, 50 based on Foata normal form. 1/394 useless extension candidates. Maximal degree in co-relation 1843. Up to 288 conditions per place. [2024-06-28 03:39:12,404 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 43 selfloop transitions, 27 changer transitions 0/78 dead transitions. [2024-06-28 03:39:12,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 78 transitions, 671 flow [2024-06-28 03:39:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:12,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:12,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-28 03:39:12,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-28 03:39:12,406 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 485 flow. Second operand 8 states and 105 transitions. [2024-06-28 03:39:12,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 78 transitions, 671 flow [2024-06-28 03:39:12,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 634 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:12,415 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 525 flow [2024-06-28 03:39:12,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2024-06-28 03:39:12,417 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-28 03:39:12,417 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 525 flow [2024-06-28 03:39:12,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:12,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:12,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:12,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:39:12,418 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)] === [2024-06-28 03:39:12,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:12,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1466949212, now seen corresponding path program 1 times [2024-06-28 03:39:12,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:12,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406803812] [2024-06-28 03:39:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:12,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:13,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:13,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:13,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406803812] [2024-06-28 03:39:13,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406803812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:13,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:13,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:13,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384744122] [2024-06-28 03:39:13,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:13,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:13,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:13,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:13,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:13,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:13,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 525 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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) [2024-06-28 03:39:13,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:13,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:13,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:13,281 INFO L124 PetriNetUnfolderBase]: 232/418 cut-off events. [2024-06-28 03:39:13,281 INFO L125 PetriNetUnfolderBase]: For 4644/4644 co-relation queries the response was YES. [2024-06-28 03:39:13,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2087 conditions, 418 events. 232/418 cut-off events. For 4644/4644 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1483 event pairs, 55 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 2050. Up to 323 conditions per place. [2024-06-28 03:39:13,284 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 49 selfloop transitions, 29 changer transitions 0/80 dead transitions. [2024-06-28 03:39:13,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 797 flow [2024-06-28 03:39:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:13,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:13,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-28 03:39:13,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-28 03:39:13,286 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 525 flow. Second operand 7 states and 89 transitions. [2024-06-28 03:39:13,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 797 flow [2024-06-28 03:39:13,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 80 transitions, 740 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:13,292 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 564 flow [2024-06-28 03:39:13,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=564, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2024-06-28 03:39:13,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-28 03:39:13,293 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 564 flow [2024-06-28 03:39:13,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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) [2024-06-28 03:39:13,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:13,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:13,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:39:13,293 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)] === [2024-06-28 03:39:13,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:13,294 INFO L85 PathProgramCache]: Analyzing trace with hash -773475851, now seen corresponding path program 1 times [2024-06-28 03:39:13,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:13,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520358441] [2024-06-28 03:39:13,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:13,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:13,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:13,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520358441] [2024-06-28 03:39:13,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520358441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:13,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:13,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:13,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841669391] [2024-06-28 03:39:13,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:13,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:13,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:13,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:13,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:14,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:14,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 564 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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) [2024-06-28 03:39:14,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:14,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:14,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:14,263 INFO L124 PetriNetUnfolderBase]: 270/480 cut-off events. [2024-06-28 03:39:14,263 INFO L125 PetriNetUnfolderBase]: For 6384/6384 co-relation queries the response was YES. [2024-06-28 03:39:14,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 480 events. 270/480 cut-off events. For 6384/6384 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1800 event pairs, 60 based on Foata normal form. 6/484 useless extension candidates. Maximal degree in co-relation 2373. Up to 311 conditions per place. [2024-06-28 03:39:14,267 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 58 selfloop transitions, 32 changer transitions 0/92 dead transitions. [2024-06-28 03:39:14,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 92 transitions, 858 flow [2024-06-28 03:39:14,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-28 03:39:14,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-28 03:39:14,269 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 564 flow. Second operand 8 states and 105 transitions. [2024-06-28 03:39:14,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 92 transitions, 858 flow [2024-06-28 03:39:14,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 92 transitions, 823 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:14,278 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 654 flow [2024-06-28 03:39:14,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=654, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-06-28 03:39:14,279 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-28 03:39:14,279 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 654 flow [2024-06-28 03:39:14,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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) [2024-06-28 03:39:14,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:14,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:14,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:39:14,280 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)] === [2024-06-28 03:39:14,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:14,281 INFO L85 PathProgramCache]: Analyzing trace with hash -773481648, now seen corresponding path program 2 times [2024-06-28 03:39:14,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:14,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969806445] [2024-06-28 03:39:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:14,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:14,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:14,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969806445] [2024-06-28 03:39:14,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969806445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:14,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:14,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:14,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143835536] [2024-06-28 03:39:14,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:14,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:14,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:14,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:14,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:14,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 654 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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) [2024-06-28 03:39:14,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:14,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:14,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:15,111 INFO L124 PetriNetUnfolderBase]: 268/476 cut-off events. [2024-06-28 03:39:15,112 INFO L125 PetriNetUnfolderBase]: For 6375/6377 co-relation queries the response was YES. [2024-06-28 03:39:15,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2562 conditions, 476 events. 268/476 cut-off events. For 6375/6377 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1779 event pairs, 61 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2522. Up to 383 conditions per place. [2024-06-28 03:39:15,116 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 54 selfloop transitions, 33 changer transitions 0/89 dead transitions. [2024-06-28 03:39:15,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 895 flow [2024-06-28 03:39:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:15,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-28 03:39:15,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423963133640553 [2024-06-28 03:39:15,118 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 654 flow. Second operand 7 states and 92 transitions. [2024-06-28 03:39:15,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 895 flow [2024-06-28 03:39:15,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 858 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:15,129 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 689 flow [2024-06-28 03:39:15,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=689, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2024-06-28 03:39:15,130 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-28 03:39:15,130 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 689 flow [2024-06-28 03:39:15,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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) [2024-06-28 03:39:15,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:15,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:15,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:39:15,131 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)] === [2024-06-28 03:39:15,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash 418828349, now seen corresponding path program 2 times [2024-06-28 03:39:15,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:15,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612496952] [2024-06-28 03:39:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:15,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:15,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:15,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612496952] [2024-06-28 03:39:15,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612496952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:15,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:15,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:15,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963950390] [2024-06-28 03:39:15,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:15,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:15,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:15,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:15,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:15,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:15,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 689 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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) [2024-06-28 03:39:15,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:15,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:15,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:16,013 INFO L124 PetriNetUnfolderBase]: 277/492 cut-off events. [2024-06-28 03:39:16,014 INFO L125 PetriNetUnfolderBase]: For 7598/7598 co-relation queries the response was YES. [2024-06-28 03:39:16,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 492 events. 277/492 cut-off events. For 7598/7598 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1846 event pairs, 59 based on Foata normal form. 3/493 useless extension candidates. Maximal degree in co-relation 2649. Up to 439 conditions per place. [2024-06-28 03:39:16,018 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-28 03:39:16,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 93 transitions, 977 flow [2024-06-28 03:39:16,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 03:39:16,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:39:16,021 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 689 flow. Second operand 8 states and 96 transitions. [2024-06-28 03:39:16,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 93 transitions, 977 flow [2024-06-28 03:39:16,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 93 transitions, 897 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:16,034 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 694 flow [2024-06-28 03:39:16,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=694, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2024-06-28 03:39:16,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-28 03:39:16,035 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 694 flow [2024-06-28 03:39:16,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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) [2024-06-28 03:39:16,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:16,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:16,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:39:16,036 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)] === [2024-06-28 03:39:16,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash 430252533, now seen corresponding path program 3 times [2024-06-28 03:39:16,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:16,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60475415] [2024-06-28 03:39:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:16,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:16,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:16,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60475415] [2024-06-28 03:39:16,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60475415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:16,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:16,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:16,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146736599] [2024-06-28 03:39:16,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:16,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:16,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:16,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:16,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:16,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:16,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 694 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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) [2024-06-28 03:39:16,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:16,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:16,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:16,997 INFO L124 PetriNetUnfolderBase]: 286/507 cut-off events. [2024-06-28 03:39:16,997 INFO L125 PetriNetUnfolderBase]: For 8475/8475 co-relation queries the response was YES. [2024-06-28 03:39:16,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2792 conditions, 507 events. 286/507 cut-off events. For 8475/8475 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1911 event pairs, 59 based on Foata normal form. 3/508 useless extension candidates. Maximal degree in co-relation 2748. Up to 479 conditions per place. [2024-06-28 03:39:17,002 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 77 selfloop transitions, 13 changer transitions 0/92 dead transitions. [2024-06-28 03:39:17,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 920 flow [2024-06-28 03:39:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:17,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 03:39:17,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-28 03:39:17,004 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 694 flow. Second operand 8 states and 89 transitions. [2024-06-28 03:39:17,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 920 flow [2024-06-28 03:39:17,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 890 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:17,018 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 723 flow [2024-06-28 03:39:17,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=723, PETRI_PLACES=93, PETRI_TRANSITIONS=83} [2024-06-28 03:39:17,018 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-06-28 03:39:17,019 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 723 flow [2024-06-28 03:39:17,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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) [2024-06-28 03:39:17,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:17,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:17,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:39:17,019 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)] === [2024-06-28 03:39:17,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:17,020 INFO L85 PathProgramCache]: Analyzing trace with hash 429985623, now seen corresponding path program 4 times [2024-06-28 03:39:17,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:17,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643266885] [2024-06-28 03:39:17,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:17,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:17,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:17,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643266885] [2024-06-28 03:39:17,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643266885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:17,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:17,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:17,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559313757] [2024-06-28 03:39:17,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:17,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:17,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:17,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:17,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:17,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:17,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 83 transitions, 723 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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) [2024-06-28 03:39:17,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:17,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:17,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:18,050 INFO L124 PetriNetUnfolderBase]: 280/498 cut-off events. [2024-06-28 03:39:18,050 INFO L125 PetriNetUnfolderBase]: For 8509/8509 co-relation queries the response was YES. [2024-06-28 03:39:18,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 498 events. 280/498 cut-off events. For 8509/8509 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1864 event pairs, 57 based on Foata normal form. 3/499 useless extension candidates. Maximal degree in co-relation 2685. Up to 458 conditions per place. [2024-06-28 03:39:18,054 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 75 selfloop transitions, 17 changer transitions 0/94 dead transitions. [2024-06-28 03:39:18,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 94 transitions, 935 flow [2024-06-28 03:39:18,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:18,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:18,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 03:39:18,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 03:39:18,056 INFO L175 Difference]: Start difference. First operand has 93 places, 83 transitions, 723 flow. Second operand 9 states and 100 transitions. [2024-06-28 03:39:18,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 94 transitions, 935 flow [2024-06-28 03:39:18,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 886 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:18,071 INFO L231 Difference]: Finished difference. Result has 96 places, 83 transitions, 713 flow [2024-06-28 03:39:18,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=713, PETRI_PLACES=96, PETRI_TRANSITIONS=83} [2024-06-28 03:39:18,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-28 03:39:18,072 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 83 transitions, 713 flow [2024-06-28 03:39:18,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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) [2024-06-28 03:39:18,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:18,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:18,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:39:18,072 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)] === [2024-06-28 03:39:18,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:18,073 INFO L85 PathProgramCache]: Analyzing trace with hash 429985406, now seen corresponding path program 3 times [2024-06-28 03:39:18,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:18,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819189053] [2024-06-28 03:39:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:18,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:18,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:18,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819189053] [2024-06-28 03:39:18,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819189053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:18,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:18,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:18,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408540436] [2024-06-28 03:39:18,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:18,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:18,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:18,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:18,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:18,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:18,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 713 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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) [2024-06-28 03:39:18,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:18,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:18,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:18,920 INFO L124 PetriNetUnfolderBase]: 278/495 cut-off events. [2024-06-28 03:39:18,920 INFO L125 PetriNetUnfolderBase]: For 8275/8275 co-relation queries the response was YES. [2024-06-28 03:39:18,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2688 conditions, 495 events. 278/495 cut-off events. For 8275/8275 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1863 event pairs, 58 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 2642. Up to 473 conditions per place. [2024-06-28 03:39:18,925 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 74 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-06-28 03:39:18,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 89 transitions, 901 flow [2024-06-28 03:39:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:18,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:39:18,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:39:18,927 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 713 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:39:18,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 89 transitions, 901 flow [2024-06-28 03:39:18,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 89 transitions, 841 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:18,943 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 684 flow [2024-06-28 03:39:18,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=684, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2024-06-28 03:39:18,944 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-28 03:39:18,944 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 684 flow [2024-06-28 03:39:18,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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) [2024-06-28 03:39:18,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:18,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:18,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:39:18,945 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)] === [2024-06-28 03:39:18,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:18,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1650889633, now seen corresponding path program 1 times [2024-06-28 03:39:18,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:18,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397319129] [2024-06-28 03:39:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:18,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:19,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:19,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397319129] [2024-06-28 03:39:19,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397319129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:19,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:19,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:19,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968005846] [2024-06-28 03:39:19,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:19,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:19,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:19,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:19,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:19,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:39:19,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 684 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:39:19,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:19,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:39:19,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:20,126 INFO L124 PetriNetUnfolderBase]: 269/490 cut-off events. [2024-06-28 03:39:20,127 INFO L125 PetriNetUnfolderBase]: For 9222/9222 co-relation queries the response was YES. [2024-06-28 03:39:20,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2656 conditions, 490 events. 269/490 cut-off events. For 9222/9222 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1902 event pairs, 36 based on Foata normal form. 2/490 useless extension candidates. Maximal degree in co-relation 2610. Up to 339 conditions per place. [2024-06-28 03:39:20,131 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 65 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2024-06-28 03:39:20,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 99 transitions, 956 flow [2024-06-28 03:39:20,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:20,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-28 03:39:20,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 03:39:20,133 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 684 flow. Second operand 8 states and 104 transitions. [2024-06-28 03:39:20,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 99 transitions, 956 flow [2024-06-28 03:39:20,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 99 transitions, 896 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:20,154 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 686 flow [2024-06-28 03:39:20,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=686, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2024-06-28 03:39:20,155 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-28 03:39:20,155 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 686 flow [2024-06-28 03:39:20,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:39:20,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:20,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:20,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:39:20,156 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)] === [2024-06-28 03:39:20,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:20,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1653631273, now seen corresponding path program 2 times [2024-06-28 03:39:20,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:20,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404178743] [2024-06-28 03:39:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:20,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:21,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:21,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404178743] [2024-06-28 03:39:21,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404178743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:21,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:21,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:21,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883775179] [2024-06-28 03:39:21,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:21,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:21,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:21,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:21,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:21,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:39:21,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 686 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:39:21,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:21,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:39:21,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:21,385 INFO L124 PetriNetUnfolderBase]: 266/485 cut-off events. [2024-06-28 03:39:21,386 INFO L125 PetriNetUnfolderBase]: For 9452/9452 co-relation queries the response was YES. [2024-06-28 03:39:21,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 485 events. 266/485 cut-off events. For 9452/9452 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1875 event pairs, 51 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2600. Up to 369 conditions per place. [2024-06-28 03:39:21,390 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 60 selfloop transitions, 28 changer transitions 0/98 dead transitions. [2024-06-28 03:39:21,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 900 flow [2024-06-28 03:39:21,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:21,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:21,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 03:39:21,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-28 03:39:21,392 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 686 flow. Second operand 9 states and 115 transitions. [2024-06-28 03:39:21,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 900 flow [2024-06-28 03:39:21,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 845 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:21,410 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 691 flow [2024-06-28 03:39:21,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=691, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2024-06-28 03:39:21,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-28 03:39:21,411 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 691 flow [2024-06-28 03:39:21,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:39:21,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:21,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:21,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:39:21,412 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)] === [2024-06-28 03:39:21,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:21,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1650950207, now seen corresponding path program 1 times [2024-06-28 03:39:21,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:21,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883770729] [2024-06-28 03:39:21,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:21,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:22,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:22,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883770729] [2024-06-28 03:39:22,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883770729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:22,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:22,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:22,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848010565] [2024-06-28 03:39:22,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:22,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:22,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:22,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:22,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:22,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:22,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 691 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:22,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:22,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:22,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:22,416 INFO L124 PetriNetUnfolderBase]: 282/503 cut-off events. [2024-06-28 03:39:22,416 INFO L125 PetriNetUnfolderBase]: For 9883/9883 co-relation queries the response was YES. [2024-06-28 03:39:22,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2743 conditions, 503 events. 282/503 cut-off events. For 9883/9883 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1911 event pairs, 53 based on Foata normal form. 1/502 useless extension candidates. Maximal degree in co-relation 2695. Up to 371 conditions per place. [2024-06-28 03:39:22,421 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 62 selfloop transitions, 39 changer transitions 0/103 dead transitions. [2024-06-28 03:39:22,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 1005 flow [2024-06-28 03:39:22,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:22,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 03:39:22,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 03:39:22,424 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 691 flow. Second operand 10 states and 121 transitions. [2024-06-28 03:39:22,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 1005 flow [2024-06-28 03:39:22,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 103 transitions, 928 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:22,446 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 726 flow [2024-06-28 03:39:22,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=726, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2024-06-28 03:39:22,446 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-28 03:39:22,446 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 726 flow [2024-06-28 03:39:22,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:22,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:22,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:22,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:39:22,447 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)] === [2024-06-28 03:39:22,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1769037887, now seen corresponding path program 2 times [2024-06-28 03:39:22,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:22,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415930005] [2024-06-28 03:39:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:22,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:23,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:23,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415930005] [2024-06-28 03:39:23,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415930005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:23,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:23,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:23,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449693644] [2024-06-28 03:39:23,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:23,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:23,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:23,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:23,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:23,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:23,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 726 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:23,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:23,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:23,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:23,623 INFO L124 PetriNetUnfolderBase]: 285/507 cut-off events. [2024-06-28 03:39:23,623 INFO L125 PetriNetUnfolderBase]: For 10596/10598 co-relation queries the response was YES. [2024-06-28 03:39:23,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2780 conditions, 507 events. 285/507 cut-off events. For 10596/10598 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1938 event pairs, 51 based on Foata normal form. 3/508 useless extension candidates. Maximal degree in co-relation 2732. Up to 387 conditions per place. [2024-06-28 03:39:23,628 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 65 selfloop transitions, 40 changer transitions 0/107 dead transitions. [2024-06-28 03:39:23,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 107 transitions, 1051 flow [2024-06-28 03:39:23,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:23,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 03:39:23,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-28 03:39:23,630 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 726 flow. Second operand 9 states and 115 transitions. [2024-06-28 03:39:23,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 107 transitions, 1051 flow [2024-06-28 03:39:23,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 107 transitions, 989 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:23,653 INFO L231 Difference]: Finished difference. Result has 103 places, 90 transitions, 766 flow [2024-06-28 03:39:23,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=766, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2024-06-28 03:39:23,653 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-28 03:39:23,653 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 90 transitions, 766 flow [2024-06-28 03:39:23,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:23,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:23,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:23,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:39:23,654 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)] === [2024-06-28 03:39:23,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:23,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1769042723, now seen corresponding path program 1 times [2024-06-28 03:39:23,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:23,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443488570] [2024-06-28 03:39:23,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:23,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:24,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:24,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443488570] [2024-06-28 03:39:24,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443488570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:24,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:24,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:24,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104525769] [2024-06-28 03:39:24,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:24,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:24,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:24,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:24,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:24,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:24,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 90 transitions, 766 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:24,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:24,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:24,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:24,539 INFO L124 PetriNetUnfolderBase]: 294/522 cut-off events. [2024-06-28 03:39:24,539 INFO L125 PetriNetUnfolderBase]: For 12113/12115 co-relation queries the response was YES. [2024-06-28 03:39:24,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2915 conditions, 522 events. 294/522 cut-off events. For 12113/12115 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2013 event pairs, 52 based on Foata normal form. 5/525 useless extension candidates. Maximal degree in co-relation 2865. Up to 333 conditions per place. [2024-06-28 03:39:24,543 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 42 changer transitions 0/111 dead transitions. [2024-06-28 03:39:24,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 111 transitions, 1103 flow [2024-06-28 03:39:24,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-28 03:39:24,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2024-06-28 03:39:24,545 INFO L175 Difference]: Start difference. First operand has 103 places, 90 transitions, 766 flow. Second operand 8 states and 110 transitions. [2024-06-28 03:39:24,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 111 transitions, 1103 flow [2024-06-28 03:39:24,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 111 transitions, 1019 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:24,569 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 785 flow [2024-06-28 03:39:24,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=785, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2024-06-28 03:39:24,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-28 03:39:24,570 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 785 flow [2024-06-28 03:39:24,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:24,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:24,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:24,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:39:24,571 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)] === [2024-06-28 03:39:24,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:24,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1792046687, now seen corresponding path program 2 times [2024-06-28 03:39:24,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:24,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777679710] [2024-06-28 03:39:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:24,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:25,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:25,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777679710] [2024-06-28 03:39:25,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777679710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:25,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:25,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:25,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768278645] [2024-06-28 03:39:25,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:25,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:25,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:25,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:25,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:25,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:25,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 785 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:25,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:25,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:25,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:25,529 INFO L124 PetriNetUnfolderBase]: 372/651 cut-off events. [2024-06-28 03:39:25,529 INFO L125 PetriNetUnfolderBase]: For 15533/15533 co-relation queries the response was YES. [2024-06-28 03:39:25,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3667 conditions, 651 events. 372/651 cut-off events. For 15533/15533 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2693 event pairs, 82 based on Foata normal form. 3/652 useless extension candidates. Maximal degree in co-relation 3616. Up to 472 conditions per place. [2024-06-28 03:39:25,533 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 91 selfloop transitions, 36 changer transitions 0/129 dead transitions. [2024-06-28 03:39:25,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 129 transitions, 1362 flow [2024-06-28 03:39:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 03:39:25,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-28 03:39:25,534 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 785 flow. Second operand 9 states and 115 transitions. [2024-06-28 03:39:25,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 129 transitions, 1362 flow [2024-06-28 03:39:25,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 129 transitions, 1224 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:25,549 INFO L231 Difference]: Finished difference. Result has 109 places, 108 transitions, 913 flow [2024-06-28 03:39:25,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=913, PETRI_PLACES=109, PETRI_TRANSITIONS=108} [2024-06-28 03:39:25,549 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-28 03:39:25,549 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 108 transitions, 913 flow [2024-06-28 03:39:25,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:25,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:25,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:25,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:39:25,550 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)] === [2024-06-28 03:39:25,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:25,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1792053197, now seen corresponding path program 3 times [2024-06-28 03:39:25,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:25,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834194762] [2024-06-28 03:39:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:25,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:26,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:26,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834194762] [2024-06-28 03:39:26,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834194762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:26,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:26,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:26,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473884195] [2024-06-28 03:39:26,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:26,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:26,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:26,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:26,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:26,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:26,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 108 transitions, 913 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:26,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:26,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:26,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:26,511 INFO L124 PetriNetUnfolderBase]: 366/642 cut-off events. [2024-06-28 03:39:26,511 INFO L125 PetriNetUnfolderBase]: For 15273/15273 co-relation queries the response was YES. [2024-06-28 03:39:26,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3610 conditions, 642 events. 366/642 cut-off events. For 15273/15273 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2649 event pairs, 78 based on Foata normal form. 3/643 useless extension candidates. Maximal degree in co-relation 3556. Up to 468 conditions per place. [2024-06-28 03:39:26,517 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 87 selfloop transitions, 37 changer transitions 0/126 dead transitions. [2024-06-28 03:39:26,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 126 transitions, 1281 flow [2024-06-28 03:39:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 03:39:26,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 03:39:26,518 INFO L175 Difference]: Start difference. First operand has 109 places, 108 transitions, 913 flow. Second operand 9 states and 111 transitions. [2024-06-28 03:39:26,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 126 transitions, 1281 flow [2024-06-28 03:39:26,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 126 transitions, 1264 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:26,549 INFO L231 Difference]: Finished difference. Result has 116 places, 110 transitions, 1006 flow [2024-06-28 03:39:26,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1006, PETRI_PLACES=116, PETRI_TRANSITIONS=110} [2024-06-28 03:39:26,552 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-28 03:39:26,552 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 110 transitions, 1006 flow [2024-06-28 03:39:26,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:26,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:26,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:26,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:39:26,552 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)] === [2024-06-28 03:39:26,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:26,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1792046501, now seen corresponding path program 3 times [2024-06-28 03:39:26,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:26,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199990347] [2024-06-28 03:39:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:26,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:27,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:27,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199990347] [2024-06-28 03:39:27,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199990347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:27,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:27,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:27,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467293119] [2024-06-28 03:39:27,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:27,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:27,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:27,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:27,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:27,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:27,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 110 transitions, 1006 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:27,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:27,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:27,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:27,709 INFO L124 PetriNetUnfolderBase]: 369/647 cut-off events. [2024-06-28 03:39:27,709 INFO L125 PetriNetUnfolderBase]: For 15782/15782 co-relation queries the response was YES. [2024-06-28 03:39:27,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 647 events. 369/647 cut-off events. For 15782/15782 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2672 event pairs, 65 based on Foata normal form. 1/646 useless extension candidates. Maximal degree in co-relation 3740. Up to 543 conditions per place. [2024-06-28 03:39:27,713 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 81 selfloop transitions, 38 changer transitions 0/121 dead transitions. [2024-06-28 03:39:27,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 121 transitions, 1280 flow [2024-06-28 03:39:27,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 03:39:27,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:39:27,714 INFO L175 Difference]: Start difference. First operand has 116 places, 110 transitions, 1006 flow. Second operand 8 states and 96 transitions. [2024-06-28 03:39:27,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 121 transitions, 1280 flow [2024-06-28 03:39:27,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 1231 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:27,734 INFO L231 Difference]: Finished difference. Result has 119 places, 112 transitions, 1057 flow [2024-06-28 03:39:27,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1057, PETRI_PLACES=119, PETRI_TRANSITIONS=112} [2024-06-28 03:39:27,734 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-28 03:39:27,735 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 112 transitions, 1057 flow [2024-06-28 03:39:27,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:27,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:27,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:27,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:39:27,735 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)] === [2024-06-28 03:39:27,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:27,736 INFO L85 PathProgramCache]: Analyzing trace with hash -639363959, now seen corresponding path program 4 times [2024-06-28 03:39:27,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:27,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775808732] [2024-06-28 03:39:27,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:27,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:28,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:28,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775808732] [2024-06-28 03:39:28,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775808732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:28,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:28,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559111808] [2024-06-28 03:39:28,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:28,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:28,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:28,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:28,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:28,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 112 transitions, 1057 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:28,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:28,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:28,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:28,683 INFO L124 PetriNetUnfolderBase]: 393/686 cut-off events. [2024-06-28 03:39:28,683 INFO L125 PetriNetUnfolderBase]: For 19066/19066 co-relation queries the response was YES. [2024-06-28 03:39:28,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4075 conditions, 686 events. 393/686 cut-off events. For 19066/19066 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2882 event pairs, 86 based on Foata normal form. 3/687 useless extension candidates. Maximal degree in co-relation 4017. Up to 598 conditions per place. [2024-06-28 03:39:28,688 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 107 selfloop transitions, 22 changer transitions 0/131 dead transitions. [2024-06-28 03:39:28,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 131 transitions, 1505 flow [2024-06-28 03:39:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:28,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 03:39:28,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 03:39:28,689 INFO L175 Difference]: Start difference. First operand has 119 places, 112 transitions, 1057 flow. Second operand 9 states and 107 transitions. [2024-06-28 03:39:28,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 131 transitions, 1505 flow [2024-06-28 03:39:28,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 131 transitions, 1427 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:28,718 INFO L231 Difference]: Finished difference. Result has 122 places, 116 transitions, 1060 flow [2024-06-28 03:39:28,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1060, PETRI_PLACES=122, PETRI_TRANSITIONS=116} [2024-06-28 03:39:28,719 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-28 03:39:28,719 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 116 transitions, 1060 flow [2024-06-28 03:39:28,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:28,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:28,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:28,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:39:28,719 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)] === [2024-06-28 03:39:28,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash -639370655, now seen corresponding path program 4 times [2024-06-28 03:39:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:28,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753321779] [2024-06-28 03:39:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:28,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:29,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:29,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:29,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753321779] [2024-06-28 03:39:29,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753321779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:29,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:29,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:29,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253443028] [2024-06-28 03:39:29,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:29,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:29,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:29,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:29,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:29,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:29,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 116 transitions, 1060 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:29,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:29,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:29,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:29,736 INFO L124 PetriNetUnfolderBase]: 391/683 cut-off events. [2024-06-28 03:39:29,736 INFO L125 PetriNetUnfolderBase]: For 18916/18916 co-relation queries the response was YES. [2024-06-28 03:39:29,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4052 conditions, 683 events. 391/683 cut-off events. For 18916/18916 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2863 event pairs, 86 based on Foata normal form. 1/682 useless extension candidates. Maximal degree in co-relation 3993. Up to 658 conditions per place. [2024-06-28 03:39:29,741 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 107 selfloop transitions, 14 changer transitions 0/123 dead transitions. [2024-06-28 03:39:29,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 123 transitions, 1318 flow [2024-06-28 03:39:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:39:29,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:39:29,741 INFO L175 Difference]: Start difference. First operand has 122 places, 116 transitions, 1060 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:39:29,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 123 transitions, 1318 flow [2024-06-28 03:39:29,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 123 transitions, 1263 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:29,768 INFO L231 Difference]: Finished difference. Result has 124 places, 116 transitions, 1038 flow [2024-06-28 03:39:29,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1038, PETRI_PLACES=124, PETRI_TRANSITIONS=116} [2024-06-28 03:39:29,768 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-28 03:39:29,768 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 116 transitions, 1038 flow [2024-06-28 03:39:29,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:29,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:29,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:29,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:39:29,769 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)] === [2024-06-28 03:39:29,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:29,769 INFO L85 PathProgramCache]: Analyzing trace with hash -639370469, now seen corresponding path program 5 times [2024-06-28 03:39:29,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:29,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157699928] [2024-06-28 03:39:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:29,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:30,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:30,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157699928] [2024-06-28 03:39:30,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157699928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:30,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:30,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:30,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996411822] [2024-06-28 03:39:30,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:30,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:30,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:30,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:30,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:30,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:30,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 116 transitions, 1038 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:30,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:30,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:30,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:30,657 INFO L124 PetriNetUnfolderBase]: 385/674 cut-off events. [2024-06-28 03:39:30,658 INFO L125 PetriNetUnfolderBase]: For 19394/19394 co-relation queries the response was YES. [2024-06-28 03:39:30,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3914 conditions, 674 events. 385/674 cut-off events. For 19394/19394 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2831 event pairs, 74 based on Foata normal form. 3/675 useless extension candidates. Maximal degree in co-relation 3854. Up to 591 conditions per place. [2024-06-28 03:39:30,661 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 105 selfloop transitions, 23 changer transitions 0/130 dead transitions. [2024-06-28 03:39:30,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 130 transitions, 1394 flow [2024-06-28 03:39:30,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:30,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:30,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:39:30,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:39:30,662 INFO L175 Difference]: Start difference. First operand has 124 places, 116 transitions, 1038 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:39:30,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 130 transitions, 1394 flow [2024-06-28 03:39:30,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 130 transitions, 1348 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:30,688 INFO L231 Difference]: Finished difference. Result has 126 places, 116 transitions, 1043 flow [2024-06-28 03:39:30,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1043, PETRI_PLACES=126, PETRI_TRANSITIONS=116} [2024-06-28 03:39:30,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-28 03:39:30,689 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 116 transitions, 1043 flow [2024-06-28 03:39:30,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:30,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:30,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:30,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:39:30,689 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)] === [2024-06-28 03:39:30,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:30,690 INFO L85 PathProgramCache]: Analyzing trace with hash -630792831, now seen corresponding path program 1 times [2024-06-28 03:39:30,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:30,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336271498] [2024-06-28 03:39:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:30,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:31,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:31,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336271498] [2024-06-28 03:39:31,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336271498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:31,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:31,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069053722] [2024-06-28 03:39:31,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:31,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:31,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:31,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:31,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 116 transitions, 1043 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:31,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:31,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:31,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:31,896 INFO L124 PetriNetUnfolderBase]: 381/668 cut-off events. [2024-06-28 03:39:31,897 INFO L125 PetriNetUnfolderBase]: For 19024/19024 co-relation queries the response was YES. [2024-06-28 03:39:31,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3879 conditions, 668 events. 381/668 cut-off events. For 19024/19024 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2794 event pairs, 75 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 3818. Up to 635 conditions per place. [2024-06-28 03:39:31,902 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 111 selfloop transitions, 15 changer transitions 0/128 dead transitions. [2024-06-28 03:39:31,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 128 transitions, 1339 flow [2024-06-28 03:39:31,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:31,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:39:31,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:39:31,904 INFO L175 Difference]: Start difference. First operand has 126 places, 116 transitions, 1043 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:39:31,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 128 transitions, 1339 flow [2024-06-28 03:39:31,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 128 transitions, 1299 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:31,947 INFO L231 Difference]: Finished difference. Result has 128 places, 118 transitions, 1064 flow [2024-06-28 03:39:31,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1064, PETRI_PLACES=128, PETRI_TRANSITIONS=118} [2024-06-28 03:39:31,948 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-28 03:39:31,948 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 118 transitions, 1064 flow [2024-06-28 03:39:31,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:31,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:31,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:31,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:39:31,949 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)] === [2024-06-28 03:39:31,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:31,950 INFO L85 PathProgramCache]: Analyzing trace with hash 452927437, now seen corresponding path program 6 times [2024-06-28 03:39:31,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:31,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249122027] [2024-06-28 03:39:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:31,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:32,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:32,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249122027] [2024-06-28 03:39:32,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249122027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:32,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:32,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:32,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803502568] [2024-06-28 03:39:32,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:32,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:32,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:32,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:32,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:32,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:32,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 118 transitions, 1064 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:32,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:32,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:32,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:32,962 INFO L124 PetriNetUnfolderBase]: 375/659 cut-off events. [2024-06-28 03:39:32,962 INFO L125 PetriNetUnfolderBase]: For 18735/18735 co-relation queries the response was YES. [2024-06-28 03:39:32,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3779 conditions, 659 events. 375/659 cut-off events. For 18735/18735 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2755 event pairs, 75 based on Foata normal form. 3/660 useless extension candidates. Maximal degree in co-relation 3717. Up to 618 conditions per place. [2024-06-28 03:39:32,966 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 15 changer transitions 0/129 dead transitions. [2024-06-28 03:39:32,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 129 transitions, 1346 flow [2024-06-28 03:39:32,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:32,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 03:39:32,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:39:32,967 INFO L175 Difference]: Start difference. First operand has 128 places, 118 transitions, 1064 flow. Second operand 9 states and 99 transitions. [2024-06-28 03:39:32,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 129 transitions, 1346 flow [2024-06-28 03:39:33,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 129 transitions, 1296 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:33,009 INFO L231 Difference]: Finished difference. Result has 130 places, 118 transitions, 1049 flow [2024-06-28 03:39:33,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1049, PETRI_PLACES=130, PETRI_TRANSITIONS=118} [2024-06-28 03:39:33,009 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-28 03:39:33,009 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 118 transitions, 1049 flow [2024-06-28 03:39:33,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:33,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:33,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:33,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:39:33,010 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)] === [2024-06-28 03:39:33,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:33,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1489415019, now seen corresponding path program 7 times [2024-06-28 03:39:33,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:33,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316959597] [2024-06-28 03:39:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:33,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:33,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:33,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316959597] [2024-06-28 03:39:33,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316959597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:33,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:33,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:33,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36475138] [2024-06-28 03:39:33,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:33,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:33,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:33,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:33,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:33,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:33,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 118 transitions, 1049 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:33,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:33,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:33,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:34,087 INFO L124 PetriNetUnfolderBase]: 384/674 cut-off events. [2024-06-28 03:39:34,087 INFO L125 PetriNetUnfolderBase]: For 20130/20130 co-relation queries the response was YES. [2024-06-28 03:39:34,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3841 conditions, 674 events. 384/674 cut-off events. For 20130/20130 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2853 event pairs, 48 based on Foata normal form. 3/675 useless extension candidates. Maximal degree in co-relation 3778. Up to 483 conditions per place. [2024-06-28 03:39:34,093 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 107 selfloop transitions, 42 changer transitions 0/151 dead transitions. [2024-06-28 03:39:34,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 151 transitions, 1599 flow [2024-06-28 03:39:34,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:34,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:34,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 03:39:34,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-28 03:39:34,095 INFO L175 Difference]: Start difference. First operand has 130 places, 118 transitions, 1049 flow. Second operand 9 states and 119 transitions. [2024-06-28 03:39:34,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 151 transitions, 1599 flow [2024-06-28 03:39:34,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 151 transitions, 1544 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:34,137 INFO L231 Difference]: Finished difference. Result has 131 places, 128 transitions, 1205 flow [2024-06-28 03:39:34,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1205, PETRI_PLACES=131, PETRI_TRANSITIONS=128} [2024-06-28 03:39:34,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-28 03:39:34,137 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 128 transitions, 1205 flow [2024-06-28 03:39:34,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:34,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:34,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:34,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:39:34,138 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)] === [2024-06-28 03:39:34,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:34,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1785723383, now seen corresponding path program 8 times [2024-06-28 03:39:34,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:34,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410880993] [2024-06-28 03:39:34,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:34,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:34,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:34,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410880993] [2024-06-28 03:39:34,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410880993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:34,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:34,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:34,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285750511] [2024-06-28 03:39:34,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:34,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:34,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:34,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:34,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:34,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:34,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 128 transitions, 1205 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:34,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:34,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:34,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:35,150 INFO L124 PetriNetUnfolderBase]: 378/665 cut-off events. [2024-06-28 03:39:35,150 INFO L125 PetriNetUnfolderBase]: For 19479/19479 co-relation queries the response was YES. [2024-06-28 03:39:35,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3921 conditions, 665 events. 378/665 cut-off events. For 19479/19479 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2818 event pairs, 48 based on Foata normal form. 3/666 useless extension candidates. Maximal degree in co-relation 3856. Up to 479 conditions per place. [2024-06-28 03:39:35,155 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 43 changer transitions 0/148 dead transitions. [2024-06-28 03:39:35,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 148 transitions, 1590 flow [2024-06-28 03:39:35,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:35,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 03:39:35,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-28 03:39:35,164 INFO L175 Difference]: Start difference. First operand has 131 places, 128 transitions, 1205 flow. Second operand 9 states and 115 transitions. [2024-06-28 03:39:35,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 148 transitions, 1590 flow [2024-06-28 03:39:35,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 148 transitions, 1401 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:35,210 INFO L231 Difference]: Finished difference. Result has 132 places, 128 transitions, 1116 flow [2024-06-28 03:39:35,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1116, PETRI_PLACES=132, PETRI_TRANSITIONS=128} [2024-06-28 03:39:35,211 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-28 03:39:35,211 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 128 transitions, 1116 flow [2024-06-28 03:39:35,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:35,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:35,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:35,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:39:35,212 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)] === [2024-06-28 03:39:35,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:35,212 INFO L85 PathProgramCache]: Analyzing trace with hash -630781919, now seen corresponding path program 1 times [2024-06-28 03:39:35,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:35,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967103202] [2024-06-28 03:39:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:35,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:36,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:36,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967103202] [2024-06-28 03:39:36,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967103202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:36,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:36,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:36,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121064265] [2024-06-28 03:39:36,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:36,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:36,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:36,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:36,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:36,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:36,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 128 transitions, 1116 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:36,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:36,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:36,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:36,603 INFO L124 PetriNetUnfolderBase]: 375/660 cut-off events. [2024-06-28 03:39:36,603 INFO L125 PetriNetUnfolderBase]: For 18359/18359 co-relation queries the response was YES. [2024-06-28 03:39:36,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3622 conditions, 660 events. 375/660 cut-off events. For 18359/18359 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2761 event pairs, 77 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 3559. Up to 629 conditions per place. [2024-06-28 03:39:36,607 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 122 selfloop transitions, 14 changer transitions 0/138 dead transitions. [2024-06-28 03:39:36,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 138 transitions, 1410 flow [2024-06-28 03:39:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:39:36,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:39:36,617 INFO L175 Difference]: Start difference. First operand has 132 places, 128 transitions, 1116 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:39:36,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 138 transitions, 1410 flow [2024-06-28 03:39:36,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 138 transitions, 1329 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:36,658 INFO L231 Difference]: Finished difference. Result has 135 places, 128 transitions, 1067 flow [2024-06-28 03:39:36,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1067, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2024-06-28 03:39:36,659 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-28 03:39:36,659 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 1067 flow [2024-06-28 03:39:36,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:36,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:36,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:36,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:39:36,660 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)] === [2024-06-28 03:39:36,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash -362027941, now seen corresponding path program 1 times [2024-06-28 03:39:36,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:36,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991821767] [2024-06-28 03:39:36,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:36,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:37,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:37,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991821767] [2024-06-28 03:39:37,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991821767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:37,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:37,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:37,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815996666] [2024-06-28 03:39:37,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:37,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:37,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:37,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:37,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:37,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:37,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 1067 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:37,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:37,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:37,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:37,816 INFO L124 PetriNetUnfolderBase]: 379/668 cut-off events. [2024-06-28 03:39:37,817 INFO L125 PetriNetUnfolderBase]: For 19101/19101 co-relation queries the response was YES. [2024-06-28 03:39:37,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3563 conditions, 668 events. 379/668 cut-off events. For 19101/19101 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2834 event pairs, 48 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 3500. Up to 454 conditions per place. [2024-06-28 03:39:37,820 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 102 selfloop transitions, 42 changer transitions 0/146 dead transitions. [2024-06-28 03:39:37,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 146 transitions, 1483 flow [2024-06-28 03:39:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:37,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 03:39:37,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 03:39:37,822 INFO L175 Difference]: Start difference. First operand has 135 places, 128 transitions, 1067 flow. Second operand 9 states and 109 transitions. [2024-06-28 03:39:37,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 146 transitions, 1483 flow [2024-06-28 03:39:37,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 146 transitions, 1444 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:37,858 INFO L231 Difference]: Finished difference. Result has 136 places, 129 transitions, 1124 flow [2024-06-28 03:39:37,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1124, PETRI_PLACES=136, PETRI_TRANSITIONS=129} [2024-06-28 03:39:37,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-28 03:39:37,858 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 129 transitions, 1124 flow [2024-06-28 03:39:37,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:37,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:37,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:37,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:39:37,859 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)] === [2024-06-28 03:39:37,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:37,859 INFO L85 PathProgramCache]: Analyzing trace with hash -360150116, now seen corresponding path program 1 times [2024-06-28 03:39:37,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:37,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105452883] [2024-06-28 03:39:37,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:37,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:38,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:38,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105452883] [2024-06-28 03:39:38,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105452883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:38,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:38,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:38,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709196530] [2024-06-28 03:39:38,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:38,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:38,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:38,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:38,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:38,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:38,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 129 transitions, 1124 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:38,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:38,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:38,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:38,990 INFO L124 PetriNetUnfolderBase]: 388/683 cut-off events. [2024-06-28 03:39:38,990 INFO L125 PetriNetUnfolderBase]: For 19404/19404 co-relation queries the response was YES. [2024-06-28 03:39:38,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3708 conditions, 683 events. 388/683 cut-off events. For 19404/19404 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2926 event pairs, 56 based on Foata normal form. 1/682 useless extension candidates. Maximal degree in co-relation 3645. Up to 446 conditions per place. [2024-06-28 03:39:38,993 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 111 selfloop transitions, 48 changer transitions 0/161 dead transitions. [2024-06-28 03:39:38,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 161 transitions, 1689 flow [2024-06-28 03:39:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 03:39:38,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-28 03:39:38,995 INFO L175 Difference]: Start difference. First operand has 136 places, 129 transitions, 1124 flow. Second operand 9 states and 113 transitions. [2024-06-28 03:39:38,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 161 transitions, 1689 flow [2024-06-28 03:39:39,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 161 transitions, 1601 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:39,027 INFO L231 Difference]: Finished difference. Result has 142 places, 142 transitions, 1278 flow [2024-06-28 03:39:39,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1278, PETRI_PLACES=142, PETRI_TRANSITIONS=142} [2024-06-28 03:39:39,028 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-28 03:39:39,028 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 142 transitions, 1278 flow [2024-06-28 03:39:39,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:39,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:39,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:39,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:39:39,028 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)] === [2024-06-28 03:39:39,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash -360150271, now seen corresponding path program 2 times [2024-06-28 03:39:39,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:39,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577083354] [2024-06-28 03:39:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:39,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:39,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:39,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577083354] [2024-06-28 03:39:39,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577083354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:39,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:39,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:39,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269834586] [2024-06-28 03:39:39,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:39,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:39,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:39,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:39,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:39,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 142 transitions, 1278 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:39,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:39,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:39,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:39,993 INFO L124 PetriNetUnfolderBase]: 392/691 cut-off events. [2024-06-28 03:39:39,994 INFO L125 PetriNetUnfolderBase]: For 21288/21288 co-relation queries the response was YES. [2024-06-28 03:39:39,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3912 conditions, 691 events. 392/691 cut-off events. For 21288/21288 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2959 event pairs, 68 based on Foata normal form. 2/691 useless extension candidates. Maximal degree in co-relation 3845. Up to 536 conditions per place. [2024-06-28 03:39:39,998 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 111 selfloop transitions, 44 changer transitions 0/157 dead transitions. [2024-06-28 03:39:39,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 157 transitions, 1631 flow [2024-06-28 03:39:39,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:39,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:39,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 03:39:39,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 03:39:39,999 INFO L175 Difference]: Start difference. First operand has 142 places, 142 transitions, 1278 flow. Second operand 9 states and 109 transitions. [2024-06-28 03:39:39,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 157 transitions, 1631 flow [2024-06-28 03:39:40,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 157 transitions, 1570 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:40,034 INFO L231 Difference]: Finished difference. Result has 147 places, 143 transitions, 1316 flow [2024-06-28 03:39:40,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1316, PETRI_PLACES=147, PETRI_TRANSITIONS=143} [2024-06-28 03:39:40,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-28 03:39:40,035 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 143 transitions, 1316 flow [2024-06-28 03:39:40,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:40,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:40,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:40,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:39:40,035 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)] === [2024-06-28 03:39:40,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:40,036 INFO L85 PathProgramCache]: Analyzing trace with hash -360153991, now seen corresponding path program 3 times [2024-06-28 03:39:40,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:40,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10383166] [2024-06-28 03:39:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:40,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:40,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:40,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10383166] [2024-06-28 03:39:40,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10383166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:40,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:40,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:40,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335079924] [2024-06-28 03:39:40,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:40,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:40,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:40,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:40,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:40,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:40,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 143 transitions, 1316 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:40,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:40,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:40,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:41,230 INFO L124 PetriNetUnfolderBase]: 400/707 cut-off events. [2024-06-28 03:39:41,230 INFO L125 PetriNetUnfolderBase]: For 22364/22364 co-relation queries the response was YES. [2024-06-28 03:39:41,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3968 conditions, 707 events. 400/707 cut-off events. For 22364/22364 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3081 event pairs, 66 based on Foata normal form. 2/707 useless extension candidates. Maximal degree in co-relation 3901. Up to 538 conditions per place. [2024-06-28 03:39:41,234 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 113 selfloop transitions, 45 changer transitions 0/160 dead transitions. [2024-06-28 03:39:41,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 160 transitions, 1683 flow [2024-06-28 03:39:41,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:41,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 03:39:41,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 03:39:41,235 INFO L175 Difference]: Start difference. First operand has 147 places, 143 transitions, 1316 flow. Second operand 9 states and 111 transitions. [2024-06-28 03:39:41,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 160 transitions, 1683 flow [2024-06-28 03:39:41,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 160 transitions, 1613 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:41,281 INFO L231 Difference]: Finished difference. Result has 150 places, 145 transitions, 1359 flow [2024-06-28 03:39:41,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1359, PETRI_PLACES=150, PETRI_TRANSITIONS=145} [2024-06-28 03:39:41,282 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-28 03:39:41,282 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 145 transitions, 1359 flow [2024-06-28 03:39:41,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:41,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:41,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:41,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:39:41,283 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)] === [2024-06-28 03:39:41,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:41,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1132777752, now seen corresponding path program 2 times [2024-06-28 03:39:41,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:41,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18248074] [2024-06-28 03:39:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:41,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:42,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:42,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18248074] [2024-06-28 03:39:42,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18248074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:42,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:42,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:42,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381215904] [2024-06-28 03:39:42,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:42,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:42,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:42,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:42,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:42,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:42,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 145 transitions, 1359 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:42,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:42,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:42,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:42,438 INFO L124 PetriNetUnfolderBase]: 409/722 cut-off events. [2024-06-28 03:39:42,438 INFO L125 PetriNetUnfolderBase]: For 24400/24400 co-relation queries the response was YES. [2024-06-28 03:39:42,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4100 conditions, 722 events. 409/722 cut-off events. For 24400/24400 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3176 event pairs, 66 based on Foata normal form. 3/723 useless extension candidates. Maximal degree in co-relation 4032. Up to 437 conditions per place. [2024-06-28 03:39:42,441 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 88 selfloop transitions, 74 changer transitions 0/164 dead transitions. [2024-06-28 03:39:42,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 164 transitions, 1757 flow [2024-06-28 03:39:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 03:39:42,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-28 03:39:42,443 INFO L175 Difference]: Start difference. First operand has 150 places, 145 transitions, 1359 flow. Second operand 9 states and 115 transitions. [2024-06-28 03:39:42,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 164 transitions, 1757 flow [2024-06-28 03:39:42,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 164 transitions, 1669 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:42,477 INFO L231 Difference]: Finished difference. Result has 153 places, 149 transitions, 1467 flow [2024-06-28 03:39:42,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1467, PETRI_PLACES=153, PETRI_TRANSITIONS=149} [2024-06-28 03:39:42,478 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-28 03:39:42,478 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 149 transitions, 1467 flow [2024-06-28 03:39:42,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:42,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:42,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:42,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:39:42,479 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)] === [2024-06-28 03:39:42,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:42,479 INFO L85 PathProgramCache]: Analyzing trace with hash -273314156, now seen corresponding path program 3 times [2024-06-28 03:39:42,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:42,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910528185] [2024-06-28 03:39:42,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:42,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:43,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:43,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910528185] [2024-06-28 03:39:43,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910528185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:43,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:43,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:43,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382653945] [2024-06-28 03:39:43,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:43,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:43,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:43,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:43,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:43,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:43,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 149 transitions, 1467 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:43,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:43,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:43,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:43,673 INFO L124 PetriNetUnfolderBase]: 415/732 cut-off events. [2024-06-28 03:39:43,673 INFO L125 PetriNetUnfolderBase]: For 23921/23921 co-relation queries the response was YES. [2024-06-28 03:39:43,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 732 events. 415/732 cut-off events. For 23921/23921 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3220 event pairs, 66 based on Foata normal form. 1/731 useless extension candidates. Maximal degree in co-relation 4228. Up to 439 conditions per place. [2024-06-28 03:39:43,679 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 89 selfloop transitions, 78 changer transitions 0/169 dead transitions. [2024-06-28 03:39:43,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 169 transitions, 1880 flow [2024-06-28 03:39:43,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:43,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 03:39:43,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:39:43,681 INFO L175 Difference]: Start difference. First operand has 153 places, 149 transitions, 1467 flow. Second operand 10 states and 124 transitions. [2024-06-28 03:39:43,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 169 transitions, 1880 flow [2024-06-28 03:39:43,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 169 transitions, 1724 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:43,720 INFO L231 Difference]: Finished difference. Result has 157 places, 153 transitions, 1525 flow [2024-06-28 03:39:43,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1525, PETRI_PLACES=157, PETRI_TRANSITIONS=153} [2024-06-28 03:39:43,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-28 03:39:43,720 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 153 transitions, 1525 flow [2024-06-28 03:39:43,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:43,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:43,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:43,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:39:43,721 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)] === [2024-06-28 03:39:43,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:43,721 INFO L85 PathProgramCache]: Analyzing trace with hash 434446193, now seen corresponding path program 4 times [2024-06-28 03:39:43,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:43,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204510833] [2024-06-28 03:39:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:43,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:44,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:44,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204510833] [2024-06-28 03:39:44,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204510833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:44,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:44,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:44,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446628058] [2024-06-28 03:39:44,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:44,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:44,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:44,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:44,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:44,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:44,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 153 transitions, 1525 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:44,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:44,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:44,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:44,803 INFO L124 PetriNetUnfolderBase]: 419/740 cut-off events. [2024-06-28 03:39:44,803 INFO L125 PetriNetUnfolderBase]: For 26046/26046 co-relation queries the response was YES. [2024-06-28 03:39:44,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4378 conditions, 740 events. 419/740 cut-off events. For 26046/26046 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3270 event pairs, 66 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 4307. Up to 630 conditions per place. [2024-06-28 03:39:44,807 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 122 selfloop transitions, 41 changer transitions 0/165 dead transitions. [2024-06-28 03:39:44,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 165 transitions, 1886 flow [2024-06-28 03:39:44,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 03:39:44,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 03:39:44,810 INFO L175 Difference]: Start difference. First operand has 157 places, 153 transitions, 1525 flow. Second operand 9 states and 106 transitions. [2024-06-28 03:39:44,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 165 transitions, 1886 flow [2024-06-28 03:39:44,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 165 transitions, 1739 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:44,860 INFO L231 Difference]: Finished difference. Result has 159 places, 154 transitions, 1475 flow [2024-06-28 03:39:44,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1475, PETRI_PLACES=159, PETRI_TRANSITIONS=154} [2024-06-28 03:39:44,860 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-28 03:39:44,861 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 154 transitions, 1475 flow [2024-06-28 03:39:44,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:44,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:44,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:44,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:39:44,861 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)] === [2024-06-28 03:39:44,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:44,862 INFO L85 PathProgramCache]: Analyzing trace with hash 434302043, now seen corresponding path program 5 times [2024-06-28 03:39:44,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:44,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669397460] [2024-06-28 03:39:44,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:44,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:45,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:45,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669397460] [2024-06-28 03:39:45,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669397460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:45,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:45,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:45,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446861566] [2024-06-28 03:39:45,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:45,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:45,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:45,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:45,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:45,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:45,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 154 transitions, 1475 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:45,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:45,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:45,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:46,207 INFO L124 PetriNetUnfolderBase]: 423/748 cut-off events. [2024-06-28 03:39:46,207 INFO L125 PetriNetUnfolderBase]: For 26860/26860 co-relation queries the response was YES. [2024-06-28 03:39:46,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4348 conditions, 748 events. 423/748 cut-off events. For 26860/26860 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3316 event pairs, 68 based on Foata normal form. 2/748 useless extension candidates. Maximal degree in co-relation 4276. Up to 624 conditions per place. [2024-06-28 03:39:46,211 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 119 selfloop transitions, 46 changer transitions 0/167 dead transitions. [2024-06-28 03:39:46,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 167 transitions, 1844 flow [2024-06-28 03:39:46,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:39:46,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:39:46,213 INFO L175 Difference]: Start difference. First operand has 159 places, 154 transitions, 1475 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:39:46,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 167 transitions, 1844 flow [2024-06-28 03:39:46,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 167 transitions, 1758 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:46,267 INFO L231 Difference]: Finished difference. Result has 162 places, 155 transitions, 1500 flow [2024-06-28 03:39:46,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1500, PETRI_PLACES=162, PETRI_TRANSITIONS=155} [2024-06-28 03:39:46,267 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-28 03:39:46,268 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 155 transitions, 1500 flow [2024-06-28 03:39:46,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:46,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:46,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:46,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:39:46,268 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)] === [2024-06-28 03:39:46,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash -273458306, now seen corresponding path program 4 times [2024-06-28 03:39:46,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:46,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154578353] [2024-06-28 03:39:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:46,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:47,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:47,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154578353] [2024-06-28 03:39:47,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154578353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:47,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:47,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854955636] [2024-06-28 03:39:47,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:47,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:47,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:47,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:47,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:47,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:47,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 155 transitions, 1500 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:47,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:47,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:47,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:47,448 INFO L124 PetriNetUnfolderBase]: 426/753 cut-off events. [2024-06-28 03:39:47,449 INFO L125 PetriNetUnfolderBase]: For 26990/26990 co-relation queries the response was YES. [2024-06-28 03:39:47,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4416 conditions, 753 events. 426/753 cut-off events. For 26990/26990 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3364 event pairs, 68 based on Foata normal form. 1/752 useless extension candidates. Maximal degree in co-relation 4343. Up to 449 conditions per place. [2024-06-28 03:39:47,453 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 88 selfloop transitions, 84 changer transitions 0/174 dead transitions. [2024-06-28 03:39:47,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 174 transitions, 1914 flow [2024-06-28 03:39:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:39:47,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:39:47,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:39:47,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 03:39:47,454 INFO L175 Difference]: Start difference. First operand has 162 places, 155 transitions, 1500 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:39:47,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 174 transitions, 1914 flow [2024-06-28 03:39:47,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 174 transitions, 1780 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:39:47,511 INFO L231 Difference]: Finished difference. Result has 163 places, 157 transitions, 1576 flow [2024-06-28 03:39:47,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1576, PETRI_PLACES=163, PETRI_TRANSITIONS=157} [2024-06-28 03:39:47,511 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-28 03:39:47,511 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 157 transitions, 1576 flow [2024-06-28 03:39:47,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:47,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:47,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:47,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:39:47,512 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)] === [2024-06-28 03:39:47,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:47,512 INFO L85 PathProgramCache]: Analyzing trace with hash 434298323, now seen corresponding path program 6 times [2024-06-28 03:39:47,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:47,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369829063] [2024-06-28 03:39:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:47,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:48,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:48,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369829063] [2024-06-28 03:39:48,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369829063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:48,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:48,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:48,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058142055] [2024-06-28 03:39:48,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:48,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:48,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:48,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:48,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:48,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:48,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 157 transitions, 1576 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:48,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:48,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:48,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:48,572 INFO L124 PetriNetUnfolderBase]: 430/761 cut-off events. [2024-06-28 03:39:48,572 INFO L125 PetriNetUnfolderBase]: For 28339/28339 co-relation queries the response was YES. [2024-06-28 03:39:48,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4526 conditions, 761 events. 430/761 cut-off events. For 28339/28339 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3401 event pairs, 68 based on Foata normal form. 2/761 useless extension candidates. Maximal degree in co-relation 4453. Up to 623 conditions per place. [2024-06-28 03:39:48,577 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 123 selfloop transitions, 45 changer transitions 0/170 dead transitions. [2024-06-28 03:39:48,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 170 transitions, 1951 flow [2024-06-28 03:39:48,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:48,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 03:39:48,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:39:48,578 INFO L175 Difference]: Start difference. First operand has 163 places, 157 transitions, 1576 flow. Second operand 9 states and 108 transitions. [2024-06-28 03:39:48,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 170 transitions, 1951 flow [2024-06-28 03:39:48,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 170 transitions, 1785 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:48,637 INFO L231 Difference]: Finished difference. Result has 163 places, 158 transitions, 1517 flow [2024-06-28 03:39:48,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1517, PETRI_PLACES=163, PETRI_TRANSITIONS=158} [2024-06-28 03:39:48,637 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-28 03:39:48,638 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 158 transitions, 1517 flow [2024-06-28 03:39:48,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:48,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:48,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:48,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:39:48,638 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)] === [2024-06-28 03:39:48,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash -286642703, now seen corresponding path program 7 times [2024-06-28 03:39:48,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:48,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429193350] [2024-06-28 03:39:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:48,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:49,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:49,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429193350] [2024-06-28 03:39:49,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429193350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:49,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:49,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:49,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774610448] [2024-06-28 03:39:49,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:49,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:49,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:49,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:49,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:49,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:49,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 158 transitions, 1517 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:49,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:49,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:49,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:49,608 INFO L124 PetriNetUnfolderBase]: 434/768 cut-off events. [2024-06-28 03:39:49,608 INFO L125 PetriNetUnfolderBase]: For 28150/28152 co-relation queries the response was YES. [2024-06-28 03:39:49,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 768 events. 434/768 cut-off events. For 28150/28152 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3451 event pairs, 47 based on Foata normal form. 4/770 useless extension candidates. Maximal degree in co-relation 4392. Up to 593 conditions per place. [2024-06-28 03:39:49,613 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 50 changer transitions 0/178 dead transitions. [2024-06-28 03:39:49,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 178 transitions, 2029 flow [2024-06-28 03:39:49,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:49,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 03:39:49,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-28 03:39:49,614 INFO L175 Difference]: Start difference. First operand has 163 places, 158 transitions, 1517 flow. Second operand 9 states and 116 transitions. [2024-06-28 03:39:49,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 178 transitions, 2029 flow [2024-06-28 03:39:49,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 178 transitions, 1933 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:49,691 INFO L231 Difference]: Finished difference. Result has 165 places, 159 transitions, 1538 flow [2024-06-28 03:39:49,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1538, PETRI_PLACES=165, PETRI_TRANSITIONS=159} [2024-06-28 03:39:49,692 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-28 03:39:49,692 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 159 transitions, 1538 flow [2024-06-28 03:39:49,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:49,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:49,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:49,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:39:49,692 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)] === [2024-06-28 03:39:49,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:49,693 INFO L85 PathProgramCache]: Analyzing trace with hash -286638983, now seen corresponding path program 8 times [2024-06-28 03:39:49,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:49,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112114718] [2024-06-28 03:39:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:49,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:50,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:50,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112114718] [2024-06-28 03:39:50,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112114718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:50,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:50,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:50,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209381770] [2024-06-28 03:39:50,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:50,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:50,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:50,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:50,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:50,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:50,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 159 transitions, 1538 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:50,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:50,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:50,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:50,745 INFO L124 PetriNetUnfolderBase]: 441/781 cut-off events. [2024-06-28 03:39:50,746 INFO L125 PetriNetUnfolderBase]: For 29366/29368 co-relation queries the response was YES. [2024-06-28 03:39:50,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4564 conditions, 781 events. 441/781 cut-off events. For 29366/29368 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3528 event pairs, 68 based on Foata normal form. 4/783 useless extension candidates. Maximal degree in co-relation 4490. Up to 644 conditions per place. [2024-06-28 03:39:50,753 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 127 selfloop transitions, 50 changer transitions 0/179 dead transitions. [2024-06-28 03:39:50,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 179 transitions, 1975 flow [2024-06-28 03:39:50,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 03:39:50,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 03:39:50,754 INFO L175 Difference]: Start difference. First operand has 165 places, 159 transitions, 1538 flow. Second operand 9 states and 114 transitions. [2024-06-28 03:39:50,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 179 transitions, 1975 flow [2024-06-28 03:39:50,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 179 transitions, 1851 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:50,853 INFO L231 Difference]: Finished difference. Result has 167 places, 162 transitions, 1552 flow [2024-06-28 03:39:50,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1552, PETRI_PLACES=167, PETRI_TRANSITIONS=162} [2024-06-28 03:39:50,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-28 03:39:50,854 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 162 transitions, 1552 flow [2024-06-28 03:39:50,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:50,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:50,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:50,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:39:50,854 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)] === [2024-06-28 03:39:50,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1732263016, now seen corresponding path program 5 times [2024-06-28 03:39:50,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:50,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470661518] [2024-06-28 03:39:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:51,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:51,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470661518] [2024-06-28 03:39:51,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470661518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:51,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:51,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:51,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820449762] [2024-06-28 03:39:51,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:51,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:51,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:51,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:51,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:51,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 162 transitions, 1552 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:51,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:51,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:51,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:51,994 INFO L124 PetriNetUnfolderBase]: 460/812 cut-off events. [2024-06-28 03:39:51,994 INFO L125 PetriNetUnfolderBase]: For 33928/33930 co-relation queries the response was YES. [2024-06-28 03:39:51,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4792 conditions, 812 events. 460/812 cut-off events. For 33928/33930 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3734 event pairs, 57 based on Foata normal form. 5/815 useless extension candidates. Maximal degree in co-relation 4717. Up to 436 conditions per place. [2024-06-28 03:39:52,002 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 102 selfloop transitions, 92 changer transitions 0/196 dead transitions. [2024-06-28 03:39:52,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 196 transitions, 2191 flow [2024-06-28 03:39:52,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:39:52,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:39:52,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 03:39:52,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-28 03:39:52,004 INFO L175 Difference]: Start difference. First operand has 167 places, 162 transitions, 1552 flow. Second operand 11 states and 147 transitions. [2024-06-28 03:39:52,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 196 transitions, 2191 flow [2024-06-28 03:39:52,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 196 transitions, 2103 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:52,084 INFO L231 Difference]: Finished difference. Result has 173 places, 168 transitions, 1726 flow [2024-06-28 03:39:52,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1726, PETRI_PLACES=173, PETRI_TRANSITIONS=168} [2024-06-28 03:39:52,085 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-28 03:39:52,085 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 168 transitions, 1726 flow [2024-06-28 03:39:52,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:52,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:52,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:52,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:39:52,086 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)] === [2024-06-28 03:39:52,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:52,086 INFO L85 PathProgramCache]: Analyzing trace with hash -280924908, now seen corresponding path program 6 times [2024-06-28 03:39:52,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:52,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118048833] [2024-06-28 03:39:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:52,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:52,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:52,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118048833] [2024-06-28 03:39:52,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118048833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:52,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:52,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:52,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595509412] [2024-06-28 03:39:52,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:52,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:52,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:52,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:52,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:52,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:52,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 168 transitions, 1726 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:52,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:52,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:52,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:53,103 INFO L124 PetriNetUnfolderBase]: 463/818 cut-off events. [2024-06-28 03:39:53,103 INFO L125 PetriNetUnfolderBase]: For 33444/33444 co-relation queries the response was YES. [2024-06-28 03:39:53,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5024 conditions, 818 events. 463/818 cut-off events. For 33444/33444 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3760 event pairs, 85 based on Foata normal form. 1/817 useless extension candidates. Maximal degree in co-relation 4948. Up to 714 conditions per place. [2024-06-28 03:39:53,109 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 36 changer transitions 0/186 dead transitions. [2024-06-28 03:39:53,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 186 transitions, 2206 flow [2024-06-28 03:39:53,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:53,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:53,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:39:53,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 03:39:53,110 INFO L175 Difference]: Start difference. First operand has 173 places, 168 transitions, 1726 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:39:53,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 186 transitions, 2206 flow [2024-06-28 03:39:53,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 186 transitions, 2059 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:53,195 INFO L231 Difference]: Finished difference. Result has 177 places, 174 transitions, 1743 flow [2024-06-28 03:39:53,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1743, PETRI_PLACES=177, PETRI_TRANSITIONS=174} [2024-06-28 03:39:53,195 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-28 03:39:53,196 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 174 transitions, 1743 flow [2024-06-28 03:39:53,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:53,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:53,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:53,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:39:53,196 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)] === [2024-06-28 03:39:53,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:53,196 INFO L85 PathProgramCache]: Analyzing trace with hash -281126718, now seen corresponding path program 7 times [2024-06-28 03:39:53,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:53,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95831346] [2024-06-28 03:39:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:53,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:53,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:53,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95831346] [2024-06-28 03:39:53,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95831346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:53,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:53,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:53,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730452825] [2024-06-28 03:39:53,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:53,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:53,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:53,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:53,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:54,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:54,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 174 transitions, 1743 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:54,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:54,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:54,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:54,227 INFO L124 PetriNetUnfolderBase]: 466/823 cut-off events. [2024-06-28 03:39:54,227 INFO L125 PetriNetUnfolderBase]: For 34414/34414 co-relation queries the response was YES. [2024-06-28 03:39:54,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 823 events. 466/823 cut-off events. For 34414/34414 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3787 event pairs, 83 based on Foata normal form. 1/822 useless extension candidates. Maximal degree in co-relation 5020. Up to 719 conditions per place. [2024-06-28 03:39:54,232 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 36 changer transitions 0/189 dead transitions. [2024-06-28 03:39:54,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 189 transitions, 2200 flow [2024-06-28 03:39:54,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:54,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:54,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:39:54,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 03:39:54,233 INFO L175 Difference]: Start difference. First operand has 177 places, 174 transitions, 1743 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:39:54,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 189 transitions, 2200 flow [2024-06-28 03:39:54,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 189 transitions, 2120 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:54,330 INFO L231 Difference]: Finished difference. Result has 181 places, 177 transitions, 1784 flow [2024-06-28 03:39:54,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1784, PETRI_PLACES=181, PETRI_TRANSITIONS=177} [2024-06-28 03:39:54,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-28 03:39:54,330 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 177 transitions, 1784 flow [2024-06-28 03:39:54,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:54,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:54,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:54,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:39:54,331 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)] === [2024-06-28 03:39:54,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash -281132298, now seen corresponding path program 8 times [2024-06-28 03:39:54,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:54,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380059940] [2024-06-28 03:39:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:54,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:55,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:55,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380059940] [2024-06-28 03:39:55,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380059940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:55,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:55,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:55,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41917409] [2024-06-28 03:39:55,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:55,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:55,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:55,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:55,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:55,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:55,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 177 transitions, 1784 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:55,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:55,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:55,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:55,457 INFO L124 PetriNetUnfolderBase]: 490/862 cut-off events. [2024-06-28 03:39:55,457 INFO L125 PetriNetUnfolderBase]: For 42365/42365 co-relation queries the response was YES. [2024-06-28 03:39:55,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5507 conditions, 862 events. 490/862 cut-off events. For 42365/42365 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4002 event pairs, 62 based on Foata normal form. 3/863 useless extension candidates. Maximal degree in co-relation 5427. Up to 547 conditions per place. [2024-06-28 03:39:55,463 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 85 changer transitions 0/205 dead transitions. [2024-06-28 03:39:55,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 205 transitions, 2458 flow [2024-06-28 03:39:55,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:55,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:39:55,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-28 03:39:55,464 INFO L175 Difference]: Start difference. First operand has 181 places, 177 transitions, 1784 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:39:55,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 205 transitions, 2458 flow [2024-06-28 03:39:55,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 205 transitions, 2383 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:55,565 INFO L231 Difference]: Finished difference. Result has 185 places, 185 transitions, 2012 flow [2024-06-28 03:39:55,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2012, PETRI_PLACES=185, PETRI_TRANSITIONS=185} [2024-06-28 03:39:55,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-28 03:39:55,566 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 185 transitions, 2012 flow [2024-06-28 03:39:55,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:55,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:55,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:55,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:39:55,567 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)] === [2024-06-28 03:39:55,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:55,567 INFO L85 PathProgramCache]: Analyzing trace with hash -281132453, now seen corresponding path program 9 times [2024-06-28 03:39:55,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:55,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666833847] [2024-06-28 03:39:55,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:55,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:56,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:56,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666833847] [2024-06-28 03:39:56,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666833847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:56,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:56,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:56,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754141791] [2024-06-28 03:39:56,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:56,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:56,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:56,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:56,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:56,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 185 transitions, 2012 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:56,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:56,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:56,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:56,602 INFO L124 PetriNetUnfolderBase]: 494/870 cut-off events. [2024-06-28 03:39:56,602 INFO L125 PetriNetUnfolderBase]: For 43121/43121 co-relation queries the response was YES. [2024-06-28 03:39:56,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5724 conditions, 870 events. 494/870 cut-off events. For 43121/43121 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4055 event pairs, 76 based on Foata normal form. 2/870 useless extension candidates. Maximal degree in co-relation 5643. Up to 760 conditions per place. [2024-06-28 03:39:56,611 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 156 selfloop transitions, 39 changer transitions 0/197 dead transitions. [2024-06-28 03:39:56,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 197 transitions, 2443 flow [2024-06-28 03:39:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:39:56,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:39:56,613 INFO L175 Difference]: Start difference. First operand has 185 places, 185 transitions, 2012 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:39:56,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 197 transitions, 2443 flow [2024-06-28 03:39:56,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 197 transitions, 2321 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:56,717 INFO L231 Difference]: Finished difference. Result has 188 places, 186 transitions, 1989 flow [2024-06-28 03:39:56,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1989, PETRI_PLACES=188, PETRI_TRANSITIONS=186} [2024-06-28 03:39:56,718 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-28 03:39:56,718 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 186 transitions, 1989 flow [2024-06-28 03:39:56,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:56,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:56,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:56,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:39:56,719 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)] === [2024-06-28 03:39:56,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:56,719 INFO L85 PathProgramCache]: Analyzing trace with hash -286494833, now seen corresponding path program 10 times [2024-06-28 03:39:56,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:56,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668450625] [2024-06-28 03:39:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:56,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:57,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:57,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668450625] [2024-06-28 03:39:57,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668450625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:57,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:57,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:57,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912393037] [2024-06-28 03:39:57,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:57,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:57,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:57,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:57,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:57,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:57,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 186 transitions, 1989 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:57,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:57,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:57,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:57,758 INFO L124 PetriNetUnfolderBase]: 498/877 cut-off events. [2024-06-28 03:39:57,758 INFO L125 PetriNetUnfolderBase]: For 44292/44294 co-relation queries the response was YES. [2024-06-28 03:39:57,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5809 conditions, 877 events. 498/877 cut-off events. For 44292/44294 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4110 event pairs, 74 based on Foata normal form. 4/879 useless extension candidates. Maximal degree in co-relation 5726. Up to 768 conditions per place. [2024-06-28 03:39:57,764 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 156 selfloop transitions, 43 changer transitions 0/201 dead transitions. [2024-06-28 03:39:57,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 201 transitions, 2442 flow [2024-06-28 03:39:57,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:57,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 03:39:57,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 03:39:57,765 INFO L175 Difference]: Start difference. First operand has 188 places, 186 transitions, 1989 flow. Second operand 9 states and 109 transitions. [2024-06-28 03:39:57,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 201 transitions, 2442 flow [2024-06-28 03:39:57,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 201 transitions, 2354 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:57,884 INFO L231 Difference]: Finished difference. Result has 190 places, 187 transitions, 2010 flow [2024-06-28 03:39:57,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2010, PETRI_PLACES=190, PETRI_TRANSITIONS=187} [2024-06-28 03:39:57,884 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-28 03:39:57,884 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 187 transitions, 2010 flow [2024-06-28 03:39:57,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:57,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:57,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:57,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:39:57,885 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)] === [2024-06-28 03:39:57,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1031500363, now seen corresponding path program 1 times [2024-06-28 03:39:57,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:57,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542419868] [2024-06-28 03:39:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:57,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:58,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:58,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542419868] [2024-06-28 03:39:58,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542419868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:58,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:58,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:58,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367263709] [2024-06-28 03:39:58,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:58,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:58,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:58,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:58,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:58,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:58,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 187 transitions, 2010 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:58,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:58,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:58,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:58,903 INFO L124 PetriNetUnfolderBase]: 494/872 cut-off events. [2024-06-28 03:39:58,904 INFO L125 PetriNetUnfolderBase]: For 42942/42942 co-relation queries the response was YES. [2024-06-28 03:39:58,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5710 conditions, 872 events. 494/872 cut-off events. For 42942/42942 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4069 event pairs, 90 based on Foata normal form. 2/872 useless extension candidates. Maximal degree in co-relation 5626. Up to 831 conditions per place. [2024-06-28 03:39:58,912 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 182 selfloop transitions, 16 changer transitions 0/200 dead transitions. [2024-06-28 03:39:58,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 200 transitions, 2446 flow [2024-06-28 03:39:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:58,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 03:39:58,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 03:39:58,913 INFO L175 Difference]: Start difference. First operand has 190 places, 187 transitions, 2010 flow. Second operand 9 states and 100 transitions. [2024-06-28 03:39:58,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 200 transitions, 2446 flow [2024-06-28 03:39:59,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 200 transitions, 2328 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:59,015 INFO L231 Difference]: Finished difference. Result has 191 places, 189 transitions, 1949 flow [2024-06-28 03:39:59,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1949, PETRI_PLACES=191, PETRI_TRANSITIONS=189} [2024-06-28 03:39:59,016 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-28 03:39:59,016 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 189 transitions, 1949 flow [2024-06-28 03:39:59,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:59,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:59,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:59,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:39:59,016 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)] === [2024-06-28 03:39:59,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:59,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1661704424, now seen corresponding path program 9 times [2024-06-28 03:39:59,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:59,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452951218] [2024-06-28 03:39:59,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:59,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:59,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:59,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452951218] [2024-06-28 03:39:59,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452951218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:59,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:59,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:59,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235639037] [2024-06-28 03:39:59,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:59,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:59,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:59,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:59,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:59,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:59,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 189 transitions, 1949 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:59,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:59,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:59,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:00,055 INFO L124 PetriNetUnfolderBase]: 497/877 cut-off events. [2024-06-28 03:40:00,055 INFO L125 PetriNetUnfolderBase]: For 42692/42692 co-relation queries the response was YES. [2024-06-28 03:40:00,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5686 conditions, 877 events. 497/877 cut-off events. For 42692/42692 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4125 event pairs, 90 based on Foata normal form. 1/876 useless extension candidates. Maximal degree in co-relation 5601. Up to 849 conditions per place. [2024-06-28 03:40:00,062 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 17 changer transitions 0/202 dead transitions. [2024-06-28 03:40:00,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 202 transitions, 2426 flow [2024-06-28 03:40:00,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:40:00,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 03:40:00,065 INFO L175 Difference]: Start difference. First operand has 191 places, 189 transitions, 1949 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:40:00,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 202 transitions, 2426 flow [2024-06-28 03:40:00,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 202 transitions, 2385 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:00,175 INFO L231 Difference]: Finished difference. Result has 195 places, 194 transitions, 2017 flow [2024-06-28 03:40:00,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2017, PETRI_PLACES=195, PETRI_TRANSITIONS=194} [2024-06-28 03:40:00,176 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-28 03:40:00,176 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 194 transitions, 2017 flow [2024-06-28 03:40:00,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:00,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:00,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:00,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:40:00,176 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)] === [2024-06-28 03:40:00,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:00,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1654554584, now seen corresponding path program 10 times [2024-06-28 03:40:00,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:00,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241047245] [2024-06-28 03:40:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:00,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:00,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:00,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241047245] [2024-06-28 03:40:00,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241047245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:00,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:00,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:00,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907224222] [2024-06-28 03:40:00,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:00,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:00,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:00,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:00,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:00,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 194 transitions, 2017 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:00,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:00,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:00,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:01,214 INFO L124 PetriNetUnfolderBase]: 500/882 cut-off events. [2024-06-28 03:40:01,214 INFO L125 PetriNetUnfolderBase]: For 44263/44263 co-relation queries the response was YES. [2024-06-28 03:40:01,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5771 conditions, 882 events. 500/882 cut-off events. For 44263/44263 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4147 event pairs, 88 based on Foata normal form. 1/881 useless extension candidates. Maximal degree in co-relation 5684. Up to 839 conditions per place. [2024-06-28 03:40:01,221 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 181 selfloop transitions, 23 changer transitions 0/206 dead transitions. [2024-06-28 03:40:01,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 206 transitions, 2501 flow [2024-06-28 03:40:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:40:01,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:40:01,222 INFO L175 Difference]: Start difference. First operand has 195 places, 194 transitions, 2017 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:40:01,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 206 transitions, 2501 flow [2024-06-28 03:40:01,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 206 transitions, 2460 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:01,347 INFO L231 Difference]: Finished difference. Result has 201 places, 198 transitions, 2096 flow [2024-06-28 03:40:01,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2096, PETRI_PLACES=201, PETRI_TRANSITIONS=198} [2024-06-28 03:40:01,347 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-28 03:40:01,347 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 198 transitions, 2096 flow [2024-06-28 03:40:01,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:01,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:01,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:01,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:40:01,348 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)] === [2024-06-28 03:40:01,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:01,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1654352774, now seen corresponding path program 11 times [2024-06-28 03:40:01,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:01,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096643756] [2024-06-28 03:40:01,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:01,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:02,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:02,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096643756] [2024-06-28 03:40:02,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096643756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:02,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:02,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:02,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247885747] [2024-06-28 03:40:02,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:02,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:02,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:02,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:02,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:02,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:02,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 198 transitions, 2096 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:02,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:02,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:02,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:02,376 INFO L124 PetriNetUnfolderBase]: 503/887 cut-off events. [2024-06-28 03:40:02,376 INFO L125 PetriNetUnfolderBase]: For 45991/45991 co-relation queries the response was YES. [2024-06-28 03:40:02,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5887 conditions, 887 events. 503/887 cut-off events. For 45991/45991 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4170 event pairs, 90 based on Foata normal form. 1/886 useless extension candidates. Maximal degree in co-relation 5797. Up to 844 conditions per place. [2024-06-28 03:40:02,386 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 182 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2024-06-28 03:40:02,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 209 transitions, 2586 flow [2024-06-28 03:40:02,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:02,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:40:02,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:40:02,388 INFO L175 Difference]: Start difference. First operand has 201 places, 198 transitions, 2096 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:40:02,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 209 transitions, 2586 flow [2024-06-28 03:40:02,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 209 transitions, 2486 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:02,560 INFO L231 Difference]: Finished difference. Result has 203 places, 201 transitions, 2113 flow [2024-06-28 03:40:02,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2113, PETRI_PLACES=203, PETRI_TRANSITIONS=201} [2024-06-28 03:40:02,561 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-28 03:40:02,561 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 201 transitions, 2113 flow [2024-06-28 03:40:02,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:02,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:02,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:02,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:40:02,562 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)] === [2024-06-28 03:40:02,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:02,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1654347194, now seen corresponding path program 12 times [2024-06-28 03:40:02,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:02,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559711556] [2024-06-28 03:40:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:02,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:03,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:03,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559711556] [2024-06-28 03:40:03,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559711556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:03,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:03,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:03,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905761218] [2024-06-28 03:40:03,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:03,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:03,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:03,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:03,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:03,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:03,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 201 transitions, 2113 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:03,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:03,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:03,634 INFO L124 PetriNetUnfolderBase]: 507/894 cut-off events. [2024-06-28 03:40:03,634 INFO L125 PetriNetUnfolderBase]: For 49065/49065 co-relation queries the response was YES. [2024-06-28 03:40:03,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5836 conditions, 894 events. 507/894 cut-off events. For 49065/49065 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4220 event pairs, 83 based on Foata normal form. 3/895 useless extension candidates. Maximal degree in co-relation 5746. Up to 778 conditions per place. [2024-06-28 03:40:03,640 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 175 selfloop transitions, 41 changer transitions 0/218 dead transitions. [2024-06-28 03:40:03,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 218 transitions, 2719 flow [2024-06-28 03:40:03,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 03:40:03,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 03:40:03,642 INFO L175 Difference]: Start difference. First operand has 203 places, 201 transitions, 2113 flow. Second operand 10 states and 121 transitions. [2024-06-28 03:40:03,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 218 transitions, 2719 flow [2024-06-28 03:40:03,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 218 transitions, 2648 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:03,754 INFO L231 Difference]: Finished difference. Result has 207 places, 203 transitions, 2161 flow [2024-06-28 03:40:03,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2161, PETRI_PLACES=207, PETRI_TRANSITIONS=203} [2024-06-28 03:40:03,755 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-28 03:40:03,755 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 203 transitions, 2161 flow [2024-06-28 03:40:03,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:03,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:03,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:40:03,755 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)] === [2024-06-28 03:40:03,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:03,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1654347039, now seen corresponding path program 11 times [2024-06-28 03:40:03,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:03,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702336178] [2024-06-28 03:40:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:03,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:04,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:04,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702336178] [2024-06-28 03:40:04,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702336178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:04,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:04,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:04,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398317462] [2024-06-28 03:40:04,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:04,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:04,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:04,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:04,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 203 transitions, 2161 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:04,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:04,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:04,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:04,858 INFO L124 PetriNetUnfolderBase]: 504/889 cut-off events. [2024-06-28 03:40:04,858 INFO L125 PetriNetUnfolderBase]: For 45571/45571 co-relation queries the response was YES. [2024-06-28 03:40:04,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5756 conditions, 889 events. 504/889 cut-off events. For 45571/45571 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4193 event pairs, 87 based on Foata normal form. 2/889 useless extension candidates. Maximal degree in co-relation 5665. Up to 858 conditions per place. [2024-06-28 03:40:04,865 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 195 selfloop transitions, 15 changer transitions 0/212 dead transitions. [2024-06-28 03:40:04,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 212 transitions, 2601 flow [2024-06-28 03:40:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:04,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:40:04,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:40:04,866 INFO L175 Difference]: Start difference. First operand has 207 places, 203 transitions, 2161 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:40:04,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 212 transitions, 2601 flow [2024-06-28 03:40:04,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 212 transitions, 2373 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:04,984 INFO L231 Difference]: Finished difference. Result has 207 places, 203 transitions, 1967 flow [2024-06-28 03:40:04,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1967, PETRI_PLACES=207, PETRI_TRANSITIONS=203} [2024-06-28 03:40:04,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-28 03:40:04,985 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 203 transitions, 1967 flow [2024-06-28 03:40:04,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:04,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:04,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:04,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:40:04,985 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)] === [2024-06-28 03:40:04,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:04,985 INFO L85 PathProgramCache]: Analyzing trace with hash 477150808, now seen corresponding path program 13 times [2024-06-28 03:40:04,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:04,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454090056] [2024-06-28 03:40:04,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:04,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:05,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:05,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454090056] [2024-06-28 03:40:05,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454090056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:05,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:05,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:05,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110650081] [2024-06-28 03:40:05,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:05,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:05,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:05,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:05,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:05,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:05,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 203 transitions, 1967 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:05,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:05,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:05,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:06,279 INFO L124 PetriNetUnfolderBase]: 508/896 cut-off events. [2024-06-28 03:40:06,280 INFO L125 PetriNetUnfolderBase]: For 45005/45005 co-relation queries the response was YES. [2024-06-28 03:40:06,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5399 conditions, 896 events. 508/896 cut-off events. For 45005/45005 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4237 event pairs, 64 based on Foata normal form. 3/897 useless extension candidates. Maximal degree in co-relation 5308. Up to 699 conditions per place. [2024-06-28 03:40:06,287 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 162 selfloop transitions, 58 changer transitions 0/222 dead transitions. [2024-06-28 03:40:06,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 222 transitions, 2479 flow [2024-06-28 03:40:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:06,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 03:40:06,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 03:40:06,288 INFO L175 Difference]: Start difference. First operand has 207 places, 203 transitions, 1967 flow. Second operand 10 states and 126 transitions. [2024-06-28 03:40:06,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 222 transitions, 2479 flow [2024-06-28 03:40:06,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 222 transitions, 2393 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:06,409 INFO L231 Difference]: Finished difference. Result has 208 places, 205 transitions, 2031 flow [2024-06-28 03:40:06,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2031, PETRI_PLACES=208, PETRI_TRANSITIONS=205} [2024-06-28 03:40:06,410 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-28 03:40:06,410 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 205 transitions, 2031 flow [2024-06-28 03:40:06,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:06,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:06,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:06,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:40:06,411 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)] === [2024-06-28 03:40:06,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:06,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2127775880, now seen corresponding path program 1 times [2024-06-28 03:40:06,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:06,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248767044] [2024-06-28 03:40:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:06,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:07,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:07,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248767044] [2024-06-28 03:40:07,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248767044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:07,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:07,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:07,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451539665] [2024-06-28 03:40:07,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:07,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:07,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:07,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:07,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:07,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 205 transitions, 2031 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:07,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:07,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:07,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:07,518 INFO L124 PetriNetUnfolderBase]: 555/989 cut-off events. [2024-06-28 03:40:07,518 INFO L125 PetriNetUnfolderBase]: For 70005/70005 co-relation queries the response was YES. [2024-06-28 03:40:07,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6654 conditions, 989 events. 555/989 cut-off events. For 70005/70005 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4775 event pairs, 73 based on Foata normal form. 2/989 useless extension candidates. Maximal degree in co-relation 6562. Up to 340 conditions per place. [2024-06-28 03:40:07,527 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 121 selfloop transitions, 111 changer transitions 0/234 dead transitions. [2024-06-28 03:40:07,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 234 transitions, 2849 flow [2024-06-28 03:40:07,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:40:07,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-28 03:40:07,528 INFO L175 Difference]: Start difference. First operand has 208 places, 205 transitions, 2031 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:40:07,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 234 transitions, 2849 flow [2024-06-28 03:40:07,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 234 transitions, 2677 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:07,704 INFO L231 Difference]: Finished difference. Result has 209 places, 206 transitions, 2091 flow [2024-06-28 03:40:07,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1859, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2091, PETRI_PLACES=209, PETRI_TRANSITIONS=206} [2024-06-28 03:40:07,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-28 03:40:07,705 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 206 transitions, 2091 flow [2024-06-28 03:40:07,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:07,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:07,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:07,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:40:07,706 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)] === [2024-06-28 03:40:07,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:07,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2108978996, now seen corresponding path program 2 times [2024-06-28 03:40:07,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:07,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994911765] [2024-06-28 03:40:07,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:07,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:08,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:08,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994911765] [2024-06-28 03:40:08,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994911765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:08,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:08,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:08,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875277532] [2024-06-28 03:40:08,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:08,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:08,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:08,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:08,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:08,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:08,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 206 transitions, 2091 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:08,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:08,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:08,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:08,946 INFO L124 PetriNetUnfolderBase]: 559/997 cut-off events. [2024-06-28 03:40:08,946 INFO L125 PetriNetUnfolderBase]: For 72417/72417 co-relation queries the response was YES. [2024-06-28 03:40:08,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6768 conditions, 997 events. 559/997 cut-off events. For 72417/72417 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4851 event pairs, 101 based on Foata normal form. 2/997 useless extension candidates. Maximal degree in co-relation 6676. Up to 738 conditions per place. [2024-06-28 03:40:08,952 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 141 selfloop transitions, 80 changer transitions 0/223 dead transitions. [2024-06-28 03:40:08,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 223 transitions, 2590 flow [2024-06-28 03:40:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 03:40:08,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 03:40:08,954 INFO L175 Difference]: Start difference. First operand has 209 places, 206 transitions, 2091 flow. Second operand 10 states and 121 transitions. [2024-06-28 03:40:08,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 223 transitions, 2590 flow [2024-06-28 03:40:09,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 223 transitions, 2412 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:09,106 INFO L231 Difference]: Finished difference. Result has 212 places, 207 transitions, 2087 flow [2024-06-28 03:40:09,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2087, PETRI_PLACES=212, PETRI_TRANSITIONS=207} [2024-06-28 03:40:09,107 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 03:40:09,107 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 207 transitions, 2087 flow [2024-06-28 03:40:09,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:09,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:09,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:09,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:40:09,107 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)] === [2024-06-28 03:40:09,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:09,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2024074372, now seen corresponding path program 3 times [2024-06-28 03:40:09,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:09,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935684286] [2024-06-28 03:40:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:09,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:09,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:09,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935684286] [2024-06-28 03:40:09,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935684286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:09,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:09,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:09,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837648163] [2024-06-28 03:40:09,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:09,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:09,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:09,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:09,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:09,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:09,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 207 transitions, 2087 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:09,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:09,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:09,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:10,357 INFO L124 PetriNetUnfolderBase]: 613/1103 cut-off events. [2024-06-28 03:40:10,357 INFO L125 PetriNetUnfolderBase]: For 101744/101744 co-relation queries the response was YES. [2024-06-28 03:40:10,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8122 conditions, 1103 events. 613/1103 cut-off events. For 101744/101744 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5507 event pairs, 97 based on Foata normal form. 2/1103 useless extension candidates. Maximal degree in co-relation 8029. Up to 474 conditions per place. [2024-06-28 03:40:10,370 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 113 selfloop transitions, 126 changer transitions 0/241 dead transitions. [2024-06-28 03:40:10,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 241 transitions, 2955 flow [2024-06-28 03:40:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-28 03:40:10,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44868035190615835 [2024-06-28 03:40:10,371 INFO L175 Difference]: Start difference. First operand has 212 places, 207 transitions, 2087 flow. Second operand 11 states and 153 transitions. [2024-06-28 03:40:10,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 241 transitions, 2955 flow [2024-06-28 03:40:10,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 241 transitions, 2791 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:10,557 INFO L231 Difference]: Finished difference. Result has 216 places, 210 transitions, 2238 flow [2024-06-28 03:40:10,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2238, PETRI_PLACES=216, PETRI_TRANSITIONS=210} [2024-06-28 03:40:10,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-28 03:40:10,558 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 210 transitions, 2238 flow [2024-06-28 03:40:10,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:10,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:10,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:10,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:40:10,558 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)] === [2024-06-28 03:40:10,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:10,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2108983646, now seen corresponding path program 4 times [2024-06-28 03:40:10,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:10,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805963483] [2024-06-28 03:40:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:10,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:11,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:11,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805963483] [2024-06-28 03:40:11,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805963483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:11,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:11,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:11,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364915645] [2024-06-28 03:40:11,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:11,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:11,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:11,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:11,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:11,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:11,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 210 transitions, 2238 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:11,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:11,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:11,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:11,831 INFO L124 PetriNetUnfolderBase]: 617/1111 cut-off events. [2024-06-28 03:40:11,832 INFO L125 PetriNetUnfolderBase]: For 105734/105734 co-relation queries the response was YES. [2024-06-28 03:40:11,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8400 conditions, 1111 events. 617/1111 cut-off events. For 105734/105734 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5598 event pairs, 125 based on Foata normal form. 2/1111 useless extension candidates. Maximal degree in co-relation 8305. Up to 838 conditions per place. [2024-06-28 03:40:11,839 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 145 selfloop transitions, 81 changer transitions 0/228 dead transitions. [2024-06-28 03:40:11,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 228 transitions, 2753 flow [2024-06-28 03:40:11,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:11,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:11,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 03:40:11,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 03:40:11,840 INFO L175 Difference]: Start difference. First operand has 216 places, 210 transitions, 2238 flow. Second operand 10 states and 123 transitions. [2024-06-28 03:40:11,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 228 transitions, 2753 flow [2024-06-28 03:40:12,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 228 transitions, 2569 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:12,061 INFO L231 Difference]: Finished difference. Result has 219 places, 211 transitions, 2234 flow [2024-06-28 03:40:12,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2234, PETRI_PLACES=219, PETRI_TRANSITIONS=211} [2024-06-28 03:40:12,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-28 03:40:12,062 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 211 transitions, 2234 flow [2024-06-28 03:40:12,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:12,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:12,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:12,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:40:12,062 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)] === [2024-06-28 03:40:12,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:12,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2024194528, now seen corresponding path program 1 times [2024-06-28 03:40:12,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:12,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568134804] [2024-06-28 03:40:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:12,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:12,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:12,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568134804] [2024-06-28 03:40:12,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568134804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:12,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:12,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:12,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168727894] [2024-06-28 03:40:12,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:12,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:12,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:12,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:12,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:13,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:13,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 211 transitions, 2234 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:13,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:13,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:13,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:13,394 INFO L124 PetriNetUnfolderBase]: 623/1121 cut-off events. [2024-06-28 03:40:13,394 INFO L125 PetriNetUnfolderBase]: For 108580/108580 co-relation queries the response was YES. [2024-06-28 03:40:13,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8541 conditions, 1121 events. 623/1121 cut-off events. For 108580/108580 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5624 event pairs, 112 based on Foata normal form. 2/1121 useless extension candidates. Maximal degree in co-relation 8444. Up to 611 conditions per place. [2024-06-28 03:40:13,403 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 127 selfloop transitions, 105 changer transitions 0/234 dead transitions. [2024-06-28 03:40:13,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 234 transitions, 2924 flow [2024-06-28 03:40:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:13,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 03:40:13,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-28 03:40:13,404 INFO L175 Difference]: Start difference. First operand has 219 places, 211 transitions, 2234 flow. Second operand 10 states and 129 transitions. [2024-06-28 03:40:13,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 234 transitions, 2924 flow [2024-06-28 03:40:13,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 234 transitions, 2760 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:13,624 INFO L231 Difference]: Finished difference. Result has 221 places, 215 transitions, 2341 flow [2024-06-28 03:40:13,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2341, PETRI_PLACES=221, PETRI_TRANSITIONS=215} [2024-06-28 03:40:13,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-28 03:40:13,624 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 215 transitions, 2341 flow [2024-06-28 03:40:13,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:13,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:13,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:13,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:40:13,625 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)] === [2024-06-28 03:40:13,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash 117369786, now seen corresponding path program 2 times [2024-06-28 03:40:13,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:13,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210301765] [2024-06-28 03:40:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:13,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:14,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210301765] [2024-06-28 03:40:14,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210301765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:14,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:14,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:14,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614704272] [2024-06-28 03:40:14,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:14,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:14,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:14,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:14,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:14,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:14,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 215 transitions, 2341 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:14,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:14,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:14,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:15,065 INFO L124 PetriNetUnfolderBase]: 629/1131 cut-off events. [2024-06-28 03:40:15,065 INFO L125 PetriNetUnfolderBase]: For 112346/112346 co-relation queries the response was YES. [2024-06-28 03:40:15,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8775 conditions, 1131 events. 629/1131 cut-off events. For 112346/112346 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5721 event pairs, 94 based on Foata normal form. 2/1131 useless extension candidates. Maximal degree in co-relation 8677. Up to 818 conditions per place. [2024-06-28 03:40:15,076 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 82 changer transitions 0/236 dead transitions. [2024-06-28 03:40:15,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 236 transitions, 2893 flow [2024-06-28 03:40:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:40:15,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 03:40:15,078 INFO L175 Difference]: Start difference. First operand has 221 places, 215 transitions, 2341 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:40:15,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 236 transitions, 2893 flow [2024-06-28 03:40:15,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 236 transitions, 2787 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:15,299 INFO L231 Difference]: Finished difference. Result has 226 places, 217 transitions, 2438 flow [2024-06-28 03:40:15,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2438, PETRI_PLACES=226, PETRI_TRANSITIONS=217} [2024-06-28 03:40:15,300 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-28 03:40:15,300 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 217 transitions, 2438 flow [2024-06-28 03:40:15,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:15,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:15,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:15,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:40:15,300 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)] === [2024-06-28 03:40:15,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:15,301 INFO L85 PathProgramCache]: Analyzing trace with hash -536490518, now seen corresponding path program 5 times [2024-06-28 03:40:15,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:15,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699891703] [2024-06-28 03:40:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:15,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:16,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:16,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699891703] [2024-06-28 03:40:16,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699891703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:16,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:16,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:16,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351401613] [2024-06-28 03:40:16,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:16,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:16,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:16,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:16,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:16,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 217 transitions, 2438 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:16,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:16,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:16,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:16,703 INFO L124 PetriNetUnfolderBase]: 614/1106 cut-off events. [2024-06-28 03:40:16,703 INFO L125 PetriNetUnfolderBase]: For 116129/116129 co-relation queries the response was YES. [2024-06-28 03:40:16,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7983 conditions, 1106 events. 614/1106 cut-off events. For 116129/116129 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5600 event pairs, 95 based on Foata normal form. 16/1120 useless extension candidates. Maximal degree in co-relation 7883. Up to 753 conditions per place. [2024-06-28 03:40:16,713 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 156 selfloop transitions, 73 changer transitions 9/240 dead transitions. [2024-06-28 03:40:16,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 240 transitions, 3012 flow [2024-06-28 03:40:16,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:40:16,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 03:40:16,714 INFO L175 Difference]: Start difference. First operand has 226 places, 217 transitions, 2438 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:40:16,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 240 transitions, 3012 flow [2024-06-28 03:40:16,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 240 transitions, 2831 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:16,992 INFO L231 Difference]: Finished difference. Result has 227 places, 214 transitions, 2362 flow [2024-06-28 03:40:16,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2362, PETRI_PLACES=227, PETRI_TRANSITIONS=214} [2024-06-28 03:40:16,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-28 03:40:16,992 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 214 transitions, 2362 flow [2024-06-28 03:40:16,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:16,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:16,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:16,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:40:16,993 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)] === [2024-06-28 03:40:16,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:16,993 INFO L85 PathProgramCache]: Analyzing trace with hash 582935764, now seen corresponding path program 6 times [2024-06-28 03:40:16,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:16,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117276013] [2024-06-28 03:40:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:16,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:17,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:17,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117276013] [2024-06-28 03:40:17,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117276013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:17,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:17,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:17,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289386763] [2024-06-28 03:40:17,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:17,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:17,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:17,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:18,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:18,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 214 transitions, 2362 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:18,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:18,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:18,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:18,323 INFO L124 PetriNetUnfolderBase]: 596/1080 cut-off events. [2024-06-28 03:40:18,323 INFO L125 PetriNetUnfolderBase]: For 89163/89163 co-relation queries the response was YES. [2024-06-28 03:40:18,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7826 conditions, 1080 events. 596/1080 cut-off events. For 89163/89163 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5467 event pairs, 105 based on Foata normal form. 2/1080 useless extension candidates. Maximal degree in co-relation 7725. Up to 909 conditions per place. [2024-06-28 03:40:18,336 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 167 selfloop transitions, 61 changer transitions 0/230 dead transitions. [2024-06-28 03:40:18,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 230 transitions, 2887 flow [2024-06-28 03:40:18,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:18,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:18,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:40:18,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 03:40:18,338 INFO L175 Difference]: Start difference. First operand has 227 places, 214 transitions, 2362 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:40:18,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 230 transitions, 2887 flow [2024-06-28 03:40:18,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 230 transitions, 2728 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:18,561 INFO L231 Difference]: Finished difference. Result has 230 places, 218 transitions, 2386 flow [2024-06-28 03:40:18,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2205, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2386, PETRI_PLACES=230, PETRI_TRANSITIONS=218} [2024-06-28 03:40:18,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-28 03:40:18,562 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 218 transitions, 2386 flow [2024-06-28 03:40:18,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:18,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:18,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:18,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:40:18,563 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)] === [2024-06-28 03:40:18,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:18,563 INFO L85 PathProgramCache]: Analyzing trace with hash 117196806, now seen corresponding path program 3 times [2024-06-28 03:40:18,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:18,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435545615] [2024-06-28 03:40:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:18,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:19,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:19,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435545615] [2024-06-28 03:40:19,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435545615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:19,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:19,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:19,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671896134] [2024-06-28 03:40:19,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:19,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:19,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:19,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:19,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:19,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:19,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 218 transitions, 2386 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:19,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:19,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:19,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:19,960 INFO L124 PetriNetUnfolderBase]: 602/1090 cut-off events. [2024-06-28 03:40:19,960 INFO L125 PetriNetUnfolderBase]: For 91985/91985 co-relation queries the response was YES. [2024-06-28 03:40:19,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7896 conditions, 1090 events. 602/1090 cut-off events. For 91985/91985 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5537 event pairs, 99 based on Foata normal form. 2/1090 useless extension candidates. Maximal degree in co-relation 7793. Up to 797 conditions per place. [2024-06-28 03:40:19,969 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 82 changer transitions 0/236 dead transitions. [2024-06-28 03:40:19,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 236 transitions, 2922 flow [2024-06-28 03:40:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:19,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 03:40:19,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:40:19,970 INFO L175 Difference]: Start difference. First operand has 230 places, 218 transitions, 2386 flow. Second operand 12 states and 140 transitions. [2024-06-28 03:40:19,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 236 transitions, 2922 flow [2024-06-28 03:40:20,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 236 transitions, 2800 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:20,211 INFO L231 Difference]: Finished difference. Result has 235 places, 220 transitions, 2472 flow [2024-06-28 03:40:20,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2472, PETRI_PLACES=235, PETRI_TRANSITIONS=220} [2024-06-28 03:40:20,212 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-28 03:40:20,212 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 220 transitions, 2472 flow [2024-06-28 03:40:20,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:20,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:20,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:20,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:40:20,213 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)] === [2024-06-28 03:40:20,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:20,213 INFO L85 PathProgramCache]: Analyzing trace with hash 582931114, now seen corresponding path program 7 times [2024-06-28 03:40:20,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:20,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109290111] [2024-06-28 03:40:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:20,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:21,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:21,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109290111] [2024-06-28 03:40:21,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109290111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:21,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:21,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:21,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151667735] [2024-06-28 03:40:21,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:21,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:21,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:21,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:21,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:21,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:21,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 220 transitions, 2472 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:21,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:21,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:21,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:21,563 INFO L124 PetriNetUnfolderBase]: 606/1098 cut-off events. [2024-06-28 03:40:21,563 INFO L125 PetriNetUnfolderBase]: For 94610/94610 co-relation queries the response was YES. [2024-06-28 03:40:21,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8066 conditions, 1098 events. 606/1098 cut-off events. For 94610/94610 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5588 event pairs, 107 based on Foata normal form. 2/1098 useless extension candidates. Maximal degree in co-relation 7962. Up to 907 conditions per place. [2024-06-28 03:40:21,573 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 63 changer transitions 0/234 dead transitions. [2024-06-28 03:40:21,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 234 transitions, 2982 flow [2024-06-28 03:40:21,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:21,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:40:21,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:40:21,577 INFO L175 Difference]: Start difference. First operand has 235 places, 220 transitions, 2472 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:40:21,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 234 transitions, 2982 flow [2024-06-28 03:40:21,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 234 transitions, 2774 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:21,790 INFO L231 Difference]: Finished difference. Result has 234 places, 221 transitions, 2412 flow [2024-06-28 03:40:21,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2412, PETRI_PLACES=234, PETRI_TRANSITIONS=221} [2024-06-28 03:40:21,790 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-28 03:40:21,790 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 221 transitions, 2412 flow [2024-06-28 03:40:21,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:21,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:21,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:21,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:40:21,791 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)] === [2024-06-28 03:40:21,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash 578462464, now seen corresponding path program 8 times [2024-06-28 03:40:21,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:21,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056908100] [2024-06-28 03:40:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:21,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:22,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:22,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056908100] [2024-06-28 03:40:22,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056908100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:22,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:22,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:22,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318902956] [2024-06-28 03:40:22,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:22,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:22,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:22,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:22,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:22,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:22,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 221 transitions, 2412 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:22,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:22,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:22,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:23,050 INFO L124 PetriNetUnfolderBase]: 610/1106 cut-off events. [2024-06-28 03:40:23,051 INFO L125 PetriNetUnfolderBase]: For 94681/94681 co-relation queries the response was YES. [2024-06-28 03:40:23,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7999 conditions, 1106 events. 610/1106 cut-off events. For 94681/94681 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5651 event pairs, 95 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 7895. Up to 725 conditions per place. [2024-06-28 03:40:23,060 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 86 changer transitions 2/242 dead transitions. [2024-06-28 03:40:23,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 242 transitions, 3104 flow [2024-06-28 03:40:23,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 03:40:23,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 03:40:23,061 INFO L175 Difference]: Start difference. First operand has 234 places, 221 transitions, 2412 flow. Second operand 11 states and 138 transitions. [2024-06-28 03:40:23,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 242 transitions, 3104 flow [2024-06-28 03:40:23,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 242 transitions, 2974 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:23,326 INFO L231 Difference]: Finished difference. Result has 238 places, 222 transitions, 2478 flow [2024-06-28 03:40:23,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2478, PETRI_PLACES=238, PETRI_TRANSITIONS=222} [2024-06-28 03:40:23,327 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 03:40:23,327 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 222 transitions, 2478 flow [2024-06-28 03:40:23,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:23,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:23,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:23,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:40:23,327 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)] === [2024-06-28 03:40:23,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:23,328 INFO L85 PathProgramCache]: Analyzing trace with hash 578467300, now seen corresponding path program 4 times [2024-06-28 03:40:23,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:23,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805951607] [2024-06-28 03:40:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:23,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:24,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:24,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805951607] [2024-06-28 03:40:24,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805951607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:24,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:24,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:24,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526740231] [2024-06-28 03:40:24,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:24,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:24,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:24,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:24,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:24,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:24,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 222 transitions, 2478 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:24,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:24,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:24,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:24,589 INFO L124 PetriNetUnfolderBase]: 616/1116 cut-off events. [2024-06-28 03:40:24,590 INFO L125 PetriNetUnfolderBase]: For 97528/97528 co-relation queries the response was YES. [2024-06-28 03:40:24,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8166 conditions, 1116 events. 616/1116 cut-off events. For 97528/97528 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5703 event pairs, 89 based on Foata normal form. 2/1116 useless extension candidates. Maximal degree in co-relation 8061. Up to 784 conditions per place. [2024-06-28 03:40:24,599 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 153 selfloop transitions, 86 changer transitions 0/241 dead transitions. [2024-06-28 03:40:24,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 241 transitions, 3026 flow [2024-06-28 03:40:24,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 03:40:24,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-28 03:40:24,600 INFO L175 Difference]: Start difference. First operand has 238 places, 222 transitions, 2478 flow. Second operand 11 states and 137 transitions. [2024-06-28 03:40:24,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 241 transitions, 3026 flow [2024-06-28 03:40:24,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 241 transitions, 2840 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:24,872 INFO L231 Difference]: Finished difference. Result has 240 places, 224 transitions, 2505 flow [2024-06-28 03:40:24,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2292, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2505, PETRI_PLACES=240, PETRI_TRANSITIONS=224} [2024-06-28 03:40:24,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-28 03:40:24,872 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 224 transitions, 2505 flow [2024-06-28 03:40:24,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:24,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:24,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:24,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:40:24,873 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)] === [2024-06-28 03:40:24,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:24,873 INFO L85 PathProgramCache]: Analyzing trace with hash 578467114, now seen corresponding path program 9 times [2024-06-28 03:40:24,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:24,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563472919] [2024-06-28 03:40:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:24,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:25,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:25,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563472919] [2024-06-28 03:40:25,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563472919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:25,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:25,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:25,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111634925] [2024-06-28 03:40:25,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:25,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:25,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:25,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:25,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:25,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:25,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 224 transitions, 2505 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:25,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:25,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:25,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:26,341 INFO L124 PetriNetUnfolderBase]: 613/1111 cut-off events. [2024-06-28 03:40:26,342 INFO L125 PetriNetUnfolderBase]: For 95684/95684 co-relation queries the response was YES. [2024-06-28 03:40:26,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8022 conditions, 1111 events. 613/1111 cut-off events. For 95684/95684 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5688 event pairs, 100 based on Foata normal form. 2/1111 useless extension candidates. Maximal degree in co-relation 7916. Up to 761 conditions per place. [2024-06-28 03:40:26,355 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 153 selfloop transitions, 86 changer transitions 2/243 dead transitions. [2024-06-28 03:40:26,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 243 transitions, 3043 flow [2024-06-28 03:40:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:26,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 03:40:26,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:40:26,357 INFO L175 Difference]: Start difference. First operand has 240 places, 224 transitions, 2505 flow. Second operand 12 states and 144 transitions. [2024-06-28 03:40:26,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 243 transitions, 3043 flow [2024-06-28 03:40:26,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 243 transitions, 2810 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:26,640 INFO L231 Difference]: Finished difference. Result has 241 places, 224 transitions, 2455 flow [2024-06-28 03:40:26,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2272, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2455, PETRI_PLACES=241, PETRI_TRANSITIONS=224} [2024-06-28 03:40:26,641 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-28 03:40:26,641 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 224 transitions, 2455 flow [2024-06-28 03:40:26,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:26,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:26,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:26,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:40:26,642 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)] === [2024-06-28 03:40:26,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:26,642 INFO L85 PathProgramCache]: Analyzing trace with hash -295988182, now seen corresponding path program 10 times [2024-06-28 03:40:26,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:26,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929662606] [2024-06-28 03:40:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:26,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:27,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:27,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929662606] [2024-06-28 03:40:27,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929662606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:27,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:27,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:27,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719856067] [2024-06-28 03:40:27,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:27,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:27,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:27,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:27,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:27,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:27,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 224 transitions, 2455 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:27,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:27,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:27,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:27,877 INFO L124 PetriNetUnfolderBase]: 617/1118 cut-off events. [2024-06-28 03:40:27,878 INFO L125 PetriNetUnfolderBase]: For 97746/97748 co-relation queries the response was YES. [2024-06-28 03:40:27,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8026 conditions, 1118 events. 617/1118 cut-off events. For 97746/97748 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5736 event pairs, 83 based on Foata normal form. 4/1120 useless extension candidates. Maximal degree in co-relation 7921. Up to 794 conditions per place. [2024-06-28 03:40:27,885 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 87 changer transitions 0/247 dead transitions. [2024-06-28 03:40:27,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 247 transitions, 3163 flow [2024-06-28 03:40:27,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:27,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:27,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:40:27,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 03:40:27,886 INFO L175 Difference]: Start difference. First operand has 241 places, 224 transitions, 2455 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:40:27,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 247 transitions, 3163 flow [2024-06-28 03:40:28,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 247 transitions, 2975 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:28,163 INFO L231 Difference]: Finished difference. Result has 240 places, 226 transitions, 2469 flow [2024-06-28 03:40:28,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2469, PETRI_PLACES=240, PETRI_TRANSITIONS=226} [2024-06-28 03:40:28,164 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-28 03:40:28,164 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 226 transitions, 2469 flow [2024-06-28 03:40:28,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:28,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:28,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:28,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:40:28,164 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)] === [2024-06-28 03:40:28,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:28,164 INFO L85 PathProgramCache]: Analyzing trace with hash -295868212, now seen corresponding path program 11 times [2024-06-28 03:40:28,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:28,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73773893] [2024-06-28 03:40:28,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:28,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:28,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:28,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73773893] [2024-06-28 03:40:28,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73773893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:28,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:28,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:28,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031786702] [2024-06-28 03:40:28,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:28,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:28,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:28,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:28,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:28,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:28,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 226 transitions, 2469 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:28,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:28,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:28,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:29,284 INFO L124 PetriNetUnfolderBase]: 624/1131 cut-off events. [2024-06-28 03:40:29,284 INFO L125 PetriNetUnfolderBase]: For 92340/92342 co-relation queries the response was YES. [2024-06-28 03:40:29,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8012 conditions, 1131 events. 624/1131 cut-off events. For 92340/92342 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5830 event pairs, 107 based on Foata normal form. 4/1133 useless extension candidates. Maximal degree in co-relation 7906. Up to 905 conditions per place. [2024-06-28 03:40:29,294 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 87 changer transitions 0/247 dead transitions. [2024-06-28 03:40:29,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 247 transitions, 3045 flow [2024-06-28 03:40:29,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 03:40:29,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 03:40:29,295 INFO L175 Difference]: Start difference. First operand has 240 places, 226 transitions, 2469 flow. Second operand 10 states and 127 transitions. [2024-06-28 03:40:29,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 247 transitions, 3045 flow [2024-06-28 03:40:29,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 247 transitions, 2801 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:29,539 INFO L231 Difference]: Finished difference. Result has 243 places, 229 transitions, 2439 flow [2024-06-28 03:40:29,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2439, PETRI_PLACES=243, PETRI_TRANSITIONS=229} [2024-06-28 03:40:29,540 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-28 03:40:29,540 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 229 transitions, 2439 flow [2024-06-28 03:40:29,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:29,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:29,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:29,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:40:29,541 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)] === [2024-06-28 03:40:29,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash -295872862, now seen corresponding path program 12 times [2024-06-28 03:40:29,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:29,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647131540] [2024-06-28 03:40:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:29,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:30,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:30,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647131540] [2024-06-28 03:40:30,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647131540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:30,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:30,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:30,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084456212] [2024-06-28 03:40:30,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:30,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:30,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:30,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:30,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:30,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:30,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 229 transitions, 2439 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:30,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:30,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:30,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:30,655 INFO L124 PetriNetUnfolderBase]: 585/1054 cut-off events. [2024-06-28 03:40:30,655 INFO L125 PetriNetUnfolderBase]: For 60832/60834 co-relation queries the response was YES. [2024-06-28 03:40:30,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6530 conditions, 1054 events. 585/1054 cut-off events. For 60832/60834 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5373 event pairs, 86 based on Foata normal form. 4/1056 useless extension candidates. Maximal degree in co-relation 6424. Up to 814 conditions per place. [2024-06-28 03:40:30,665 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 88 changer transitions 0/249 dead transitions. [2024-06-28 03:40:30,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 249 transitions, 2994 flow [2024-06-28 03:40:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:30,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:30,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 03:40:30,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-28 03:40:30,666 INFO L175 Difference]: Start difference. First operand has 243 places, 229 transitions, 2439 flow. Second operand 10 states and 129 transitions. [2024-06-28 03:40:30,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 249 transitions, 2994 flow [2024-06-28 03:40:30,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 249 transitions, 2821 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:30,857 INFO L231 Difference]: Finished difference. Result has 246 places, 230 transitions, 2455 flow [2024-06-28 03:40:30,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2455, PETRI_PLACES=246, PETRI_TRANSITIONS=230} [2024-06-28 03:40:30,857 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-28 03:40:30,858 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 230 transitions, 2455 flow [2024-06-28 03:40:30,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:30,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:30,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:30,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:40:30,858 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)] === [2024-06-28 03:40:30,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:30,859 INFO L85 PathProgramCache]: Analyzing trace with hash -295868026, now seen corresponding path program 5 times [2024-06-28 03:40:30,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:30,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255138273] [2024-06-28 03:40:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:30,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:31,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:31,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255138273] [2024-06-28 03:40:31,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255138273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:31,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:31,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:31,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066328184] [2024-06-28 03:40:31,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:31,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:31,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:31,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:31,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:31,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:31,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 230 transitions, 2455 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:31,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:31,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:31,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:31,953 INFO L124 PetriNetUnfolderBase]: 591/1064 cut-off events. [2024-06-28 03:40:31,953 INFO L125 PetriNetUnfolderBase]: For 62762/62764 co-relation queries the response was YES. [2024-06-28 03:40:31,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6637 conditions, 1064 events. 591/1064 cut-off events. For 62762/62764 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5452 event pairs, 68 based on Foata normal form. 4/1066 useless extension candidates. Maximal degree in co-relation 6530. Up to 605 conditions per place. [2024-06-28 03:40:31,962 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 139 selfloop transitions, 114 changer transitions 0/255 dead transitions. [2024-06-28 03:40:31,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 255 transitions, 3201 flow [2024-06-28 03:40:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:31,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:31,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 03:40:31,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-28 03:40:31,965 INFO L175 Difference]: Start difference. First operand has 246 places, 230 transitions, 2455 flow. Second operand 10 states and 137 transitions. [2024-06-28 03:40:31,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 255 transitions, 3201 flow [2024-06-28 03:40:32,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 255 transitions, 3023 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:32,172 INFO L231 Difference]: Finished difference. Result has 248 places, 232 transitions, 2546 flow [2024-06-28 03:40:32,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2546, PETRI_PLACES=248, PETRI_TRANSITIONS=232} [2024-06-28 03:40:32,172 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-28 03:40:32,172 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 232 transitions, 2546 flow [2024-06-28 03:40:32,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:32,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:32,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:32,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:40:32,173 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)] === [2024-06-28 03:40:32,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:32,173 INFO L85 PathProgramCache]: Analyzing trace with hash -124992802, now seen corresponding path program 13 times [2024-06-28 03:40:32,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:32,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875923312] [2024-06-28 03:40:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:32,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:32,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:32,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875923312] [2024-06-28 03:40:32,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875923312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:32,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:32,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:32,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438855199] [2024-06-28 03:40:32,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:32,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:32,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:32,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:32,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:32,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:32,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 232 transitions, 2546 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:32,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:32,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:32,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:33,376 INFO L124 PetriNetUnfolderBase]: 618/1122 cut-off events. [2024-06-28 03:40:33,376 INFO L125 PetriNetUnfolderBase]: For 95997/95997 co-relation queries the response was YES. [2024-06-28 03:40:33,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6964 conditions, 1122 events. 618/1122 cut-off events. For 95997/95997 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5828 event pairs, 78 based on Foata normal form. 14/1134 useless extension candidates. Maximal degree in co-relation 6856. Up to 774 conditions per place. [2024-06-28 03:40:33,384 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 171 selfloop transitions, 71 changer transitions 15/259 dead transitions. [2024-06-28 03:40:33,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 259 transitions, 3182 flow [2024-06-28 03:40:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:33,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:33,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 03:40:33,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-28 03:40:33,385 INFO L175 Difference]: Start difference. First operand has 248 places, 232 transitions, 2546 flow. Second operand 10 states and 133 transitions. [2024-06-28 03:40:33,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 259 transitions, 3182 flow [2024-06-28 03:40:33,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 259 transitions, 2906 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:33,590 INFO L231 Difference]: Finished difference. Result has 251 places, 228 transitions, 2397 flow [2024-06-28 03:40:33,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2272, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2397, PETRI_PLACES=251, PETRI_TRANSITIONS=228} [2024-06-28 03:40:33,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-28 03:40:33,590 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 228 transitions, 2397 flow [2024-06-28 03:40:33,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:33,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:33,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:33,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:40:33,591 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)] === [2024-06-28 03:40:33,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash -124992616, now seen corresponding path program 6 times [2024-06-28 03:40:33,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:33,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192621357] [2024-06-28 03:40:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:33,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:34,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:34,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192621357] [2024-06-28 03:40:34,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192621357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:34,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:34,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:34,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551090652] [2024-06-28 03:40:34,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:34,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:34,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:34,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:34,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:34,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:34,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 228 transitions, 2397 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:34,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:34,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:34,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:34,870 INFO L124 PetriNetUnfolderBase]: 584/1060 cut-off events. [2024-06-28 03:40:34,871 INFO L125 PetriNetUnfolderBase]: For 66633/66633 co-relation queries the response was YES. [2024-06-28 03:40:34,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6612 conditions, 1060 events. 584/1060 cut-off events. For 66633/66633 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5482 event pairs, 72 based on Foata normal form. 2/1060 useless extension candidates. Maximal degree in co-relation 6502. Up to 784 conditions per place. [2024-06-28 03:40:34,880 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 172 selfloop transitions, 72 changer transitions 3/249 dead transitions. [2024-06-28 03:40:34,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 249 transitions, 2981 flow [2024-06-28 03:40:34,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:34,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:34,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:40:34,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 03:40:34,881 INFO L175 Difference]: Start difference. First operand has 251 places, 228 transitions, 2397 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:40:34,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 249 transitions, 2981 flow [2024-06-28 03:40:35,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 249 transitions, 2836 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:35,070 INFO L231 Difference]: Finished difference. Result has 255 places, 230 transitions, 2448 flow [2024-06-28 03:40:35,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2448, PETRI_PLACES=255, PETRI_TRANSITIONS=230} [2024-06-28 03:40:35,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-28 03:40:35,071 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 230 transitions, 2448 flow [2024-06-28 03:40:35,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:35,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:35,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:35,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:40:35,071 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)] === [2024-06-28 03:40:35,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:35,071 INFO L85 PathProgramCache]: Analyzing trace with hash -757138520, now seen corresponding path program 7 times [2024-06-28 03:40:35,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:35,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296046662] [2024-06-28 03:40:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:35,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:35,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:35,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296046662] [2024-06-28 03:40:35,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296046662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:35,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:35,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:35,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097364665] [2024-06-28 03:40:35,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:35,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:35,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:35,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:35,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:35,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:35,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 230 transitions, 2448 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:35,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:35,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:35,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:36,244 INFO L124 PetriNetUnfolderBase]: 601/1084 cut-off events. [2024-06-28 03:40:36,245 INFO L125 PetriNetUnfolderBase]: For 73972/73974 co-relation queries the response was YES. [2024-06-28 03:40:36,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6993 conditions, 1084 events. 601/1084 cut-off events. For 73972/73974 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5564 event pairs, 69 based on Foata normal form. 4/1086 useless extension candidates. Maximal degree in co-relation 6881. Up to 767 conditions per place. [2024-06-28 03:40:36,255 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 168 selfloop transitions, 88 changer transitions 0/258 dead transitions. [2024-06-28 03:40:36,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 258 transitions, 3267 flow [2024-06-28 03:40:36,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:36,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:36,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 03:40:36,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-28 03:40:36,258 INFO L175 Difference]: Start difference. First operand has 255 places, 230 transitions, 2448 flow. Second operand 10 states and 135 transitions. [2024-06-28 03:40:36,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 258 transitions, 3267 flow [2024-06-28 03:40:36,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 258 transitions, 3099 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:36,486 INFO L231 Difference]: Finished difference. Result has 257 places, 236 transitions, 2567 flow [2024-06-28 03:40:36,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2567, PETRI_PLACES=257, PETRI_TRANSITIONS=236} [2024-06-28 03:40:36,487 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-28 03:40:36,487 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 236 transitions, 2567 flow [2024-06-28 03:40:36,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:36,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:36,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:36,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:40:36,487 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)] === [2024-06-28 03:40:36,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash -757138706, now seen corresponding path program 14 times [2024-06-28 03:40:36,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:36,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622528843] [2024-06-28 03:40:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:36,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:37,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:37,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622528843] [2024-06-28 03:40:37,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622528843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:37,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:37,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:37,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23455679] [2024-06-28 03:40:37,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:37,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:37,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:37,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:37,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:37,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:37,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 236 transitions, 2567 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:37,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:37,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:37,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:37,821 INFO L124 PetriNetUnfolderBase]: 625/1136 cut-off events. [2024-06-28 03:40:37,821 INFO L125 PetriNetUnfolderBase]: For 109656/109658 co-relation queries the response was YES. [2024-06-28 03:40:37,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7225 conditions, 1136 events. 625/1136 cut-off events. For 109656/109658 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5937 event pairs, 79 based on Foata normal form. 16/1150 useless extension candidates. Maximal degree in co-relation 7111. Up to 794 conditions per place. [2024-06-28 03:40:37,834 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 169 selfloop transitions, 77 changer transitions 15/263 dead transitions. [2024-06-28 03:40:37,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 263 transitions, 3196 flow [2024-06-28 03:40:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:37,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:37,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:40:37,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 03:40:37,835 INFO L175 Difference]: Start difference. First operand has 257 places, 236 transitions, 2567 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:40:37,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 263 transitions, 3196 flow [2024-06-28 03:40:38,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 263 transitions, 3057 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:38,071 INFO L231 Difference]: Finished difference. Result has 263 places, 230 transitions, 2524 flow [2024-06-28 03:40:38,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2524, PETRI_PLACES=263, PETRI_TRANSITIONS=230} [2024-06-28 03:40:38,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-28 03:40:38,071 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 230 transitions, 2524 flow [2024-06-28 03:40:38,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:38,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:38,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:38,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:40:38,072 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)] === [2024-06-28 03:40:38,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash -291404212, now seen corresponding path program 15 times [2024-06-28 03:40:38,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:38,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319035990] [2024-06-28 03:40:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:38,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:38,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:38,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319035990] [2024-06-28 03:40:38,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319035990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:38,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:38,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:38,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144553726] [2024-06-28 03:40:38,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:38,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:38,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:38,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:38,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:38,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:38,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 230 transitions, 2524 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:38,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:38,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:38,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:39,197 INFO L124 PetriNetUnfolderBase]: 589/1072 cut-off events. [2024-06-28 03:40:39,197 INFO L125 PetriNetUnfolderBase]: For 77459/77461 co-relation queries the response was YES. [2024-06-28 03:40:39,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7059 conditions, 1072 events. 589/1072 cut-off events. For 77459/77461 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5559 event pairs, 85 based on Foata normal form. 4/1074 useless extension candidates. Maximal degree in co-relation 6943. Up to 886 conditions per place. [2024-06-28 03:40:39,207 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 66 changer transitions 1/248 dead transitions. [2024-06-28 03:40:39,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 248 transitions, 3081 flow [2024-06-28 03:40:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:39,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 03:40:39,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:40:39,209 INFO L175 Difference]: Start difference. First operand has 263 places, 230 transitions, 2524 flow. Second operand 10 states and 124 transitions. [2024-06-28 03:40:39,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 248 transitions, 3081 flow [2024-06-28 03:40:39,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 248 transitions, 2919 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:39,436 INFO L231 Difference]: Finished difference. Result has 264 places, 231 transitions, 2513 flow [2024-06-28 03:40:39,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2362, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2513, PETRI_PLACES=264, PETRI_TRANSITIONS=231} [2024-06-28 03:40:39,436 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-28 03:40:39,437 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 231 transitions, 2513 flow [2024-06-28 03:40:39,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:39,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:39,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:39,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:40:39,437 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)] === [2024-06-28 03:40:39,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:39,438 INFO L85 PathProgramCache]: Analyzing trace with hash -590909576, now seen corresponding path program 16 times [2024-06-28 03:40:39,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:39,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371468797] [2024-06-28 03:40:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:39,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:40,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:40,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371468797] [2024-06-28 03:40:40,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371468797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:40,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:40,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:40,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144510507] [2024-06-28 03:40:40,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:40,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:40,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:40,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:40,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:40,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:40,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 231 transitions, 2513 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:40,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:40,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:40,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:40,809 INFO L124 PetriNetUnfolderBase]: 634/1160 cut-off events. [2024-06-28 03:40:40,810 INFO L125 PetriNetUnfolderBase]: For 120175/120175 co-relation queries the response was YES. [2024-06-28 03:40:40,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8425 conditions, 1160 events. 634/1160 cut-off events. For 120175/120175 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6099 event pairs, 91 based on Foata normal form. 2/1160 useless extension candidates. Maximal degree in co-relation 8308. Up to 751 conditions per place. [2024-06-28 03:40:40,819 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 79 changer transitions 0/257 dead transitions. [2024-06-28 03:40:40,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 257 transitions, 3439 flow [2024-06-28 03:40:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 03:40:40,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-28 03:40:40,821 INFO L175 Difference]: Start difference. First operand has 264 places, 231 transitions, 2513 flow. Second operand 10 states and 135 transitions. [2024-06-28 03:40:40,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 257 transitions, 3439 flow [2024-06-28 03:40:41,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 257 transitions, 3297 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:41,190 INFO L231 Difference]: Finished difference. Result has 266 places, 233 transitions, 2565 flow [2024-06-28 03:40:41,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2565, PETRI_PLACES=266, PETRI_TRANSITIONS=233} [2024-06-28 03:40:41,190 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-28 03:40:41,190 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 233 transitions, 2565 flow [2024-06-28 03:40:41,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:41,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:41,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:41,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:40:41,191 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)] === [2024-06-28 03:40:41,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:41,191 INFO L85 PathProgramCache]: Analyzing trace with hash -125165596, now seen corresponding path program 8 times [2024-06-28 03:40:41,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:41,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816691062] [2024-06-28 03:40:41,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:41,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:41,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:41,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816691062] [2024-06-28 03:40:41,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816691062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:41,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:41,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:41,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445812420] [2024-06-28 03:40:41,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:41,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:41,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:41,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:41,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:42,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:42,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 233 transitions, 2565 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:42,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:42,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:42,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:42,502 INFO L124 PetriNetUnfolderBase]: 650/1186 cut-off events. [2024-06-28 03:40:42,502 INFO L125 PetriNetUnfolderBase]: For 129995/129995 co-relation queries the response was YES. [2024-06-28 03:40:42,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8867 conditions, 1186 events. 650/1186 cut-off events. For 129995/129995 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6249 event pairs, 91 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 8749. Up to 856 conditions per place. [2024-06-28 03:40:42,513 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 171 selfloop transitions, 82 changer transitions 0/255 dead transitions. [2024-06-28 03:40:42,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 255 transitions, 3355 flow [2024-06-28 03:40:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 03:40:42,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 03:40:42,514 INFO L175 Difference]: Start difference. First operand has 266 places, 233 transitions, 2565 flow. Second operand 10 states and 131 transitions. [2024-06-28 03:40:42,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 255 transitions, 3355 flow [2024-06-28 03:40:42,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 255 transitions, 3240 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:42,907 INFO L231 Difference]: Finished difference. Result has 270 places, 237 transitions, 2711 flow [2024-06-28 03:40:42,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2450, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2711, PETRI_PLACES=270, PETRI_TRANSITIONS=237} [2024-06-28 03:40:42,907 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-28 03:40:42,907 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 237 transitions, 2711 flow [2024-06-28 03:40:42,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:42,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:42,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:42,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:40:42,908 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)] === [2024-06-28 03:40:42,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:42,908 INFO L85 PathProgramCache]: Analyzing trace with hash -590904926, now seen corresponding path program 17 times [2024-06-28 03:40:42,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:42,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117456355] [2024-06-28 03:40:42,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:42,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:43,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:43,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117456355] [2024-06-28 03:40:43,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117456355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:43,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:43,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:43,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350606715] [2024-06-28 03:40:43,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:43,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:43,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:43,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:43,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:43,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:43,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 237 transitions, 2711 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:43,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:43,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:43,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:44,274 INFO L124 PetriNetUnfolderBase]: 654/1194 cut-off events. [2024-06-28 03:40:44,274 INFO L125 PetriNetUnfolderBase]: For 133957/133957 co-relation queries the response was YES. [2024-06-28 03:40:44,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9086 conditions, 1194 events. 654/1194 cut-off events. For 133957/133957 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6316 event pairs, 98 based on Foata normal form. 2/1194 useless extension candidates. Maximal degree in co-relation 8966. Up to 897 conditions per place. [2024-06-28 03:40:44,286 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 80 changer transitions 0/256 dead transitions. [2024-06-28 03:40:44,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 256 transitions, 3434 flow [2024-06-28 03:40:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:40:44,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 03:40:44,287 INFO L175 Difference]: Start difference. First operand has 270 places, 237 transitions, 2711 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:40:44,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 256 transitions, 3434 flow [2024-06-28 03:40:44,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 256 transitions, 3290 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:44,671 INFO L231 Difference]: Finished difference. Result has 274 places, 238 transitions, 2753 flow [2024-06-28 03:40:44,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2753, PETRI_PLACES=274, PETRI_TRANSITIONS=238} [2024-06-28 03:40:44,672 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-28 03:40:44,672 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 238 transitions, 2753 flow [2024-06-28 03:40:44,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:44,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:44,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:44,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:40:44,673 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)] === [2024-06-28 03:40:44,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash -118736506, now seen corresponding path program 9 times [2024-06-28 03:40:44,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:44,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267608105] [2024-06-28 03:40:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:44,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:45,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:45,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:45,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267608105] [2024-06-28 03:40:45,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267608105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:45,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:45,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:45,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467135828] [2024-06-28 03:40:45,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:45,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:45,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:45,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:45,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:45,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:45,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 238 transitions, 2753 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:45,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:45,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:45,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:45,974 INFO L124 PetriNetUnfolderBase]: 662/1208 cut-off events. [2024-06-28 03:40:45,974 INFO L125 PetriNetUnfolderBase]: For 130233/130233 co-relation queries the response was YES. [2024-06-28 03:40:45,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9143 conditions, 1208 events. 662/1208 cut-off events. For 130233/130233 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6415 event pairs, 99 based on Foata normal form. 2/1208 useless extension candidates. Maximal degree in co-relation 9022. Up to 915 conditions per place. [2024-06-28 03:40:45,984 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 80 changer transitions 0/261 dead transitions. [2024-06-28 03:40:45,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 261 transitions, 3527 flow [2024-06-28 03:40:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 03:40:45,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-28 03:40:45,985 INFO L175 Difference]: Start difference. First operand has 274 places, 238 transitions, 2753 flow. Second operand 11 states and 137 transitions. [2024-06-28 03:40:45,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 261 transitions, 3527 flow [2024-06-28 03:40:46,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 261 transitions, 3354 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:46,306 INFO L231 Difference]: Finished difference. Result has 276 places, 242 transitions, 2800 flow [2024-06-28 03:40:46,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2800, PETRI_PLACES=276, PETRI_TRANSITIONS=242} [2024-06-28 03:40:46,307 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-28 03:40:46,307 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 242 transitions, 2800 flow [2024-06-28 03:40:46,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:46,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:46,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:46,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:40:46,307 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)] === [2024-06-28 03:40:46,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:46,307 INFO L85 PathProgramCache]: Analyzing trace with hash -291226396, now seen corresponding path program 10 times [2024-06-28 03:40:46,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:46,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358122871] [2024-06-28 03:40:46,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:46,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:47,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:47,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358122871] [2024-06-28 03:40:47,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358122871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:47,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:47,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:47,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84309359] [2024-06-28 03:40:47,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:47,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:47,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:47,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:47,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:47,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 242 transitions, 2800 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:47,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:47,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:47,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:47,535 INFO L124 PetriNetUnfolderBase]: 658/1201 cut-off events. [2024-06-28 03:40:47,535 INFO L125 PetriNetUnfolderBase]: For 126620/126622 co-relation queries the response was YES. [2024-06-28 03:40:47,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8963 conditions, 1201 events. 658/1201 cut-off events. For 126620/126622 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6384 event pairs, 104 based on Foata normal form. 4/1203 useless extension candidates. Maximal degree in co-relation 8841. Up to 939 conditions per place. [2024-06-28 03:40:47,547 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 179 selfloop transitions, 78 changer transitions 0/259 dead transitions. [2024-06-28 03:40:47,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 259 transitions, 3358 flow [2024-06-28 03:40:47,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:47,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:47,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 03:40:47,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 03:40:47,548 INFO L175 Difference]: Start difference. First operand has 276 places, 242 transitions, 2800 flow. Second operand 10 states and 125 transitions. [2024-06-28 03:40:47,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 259 transitions, 3358 flow [2024-06-28 03:40:47,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 259 transitions, 3126 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:47,901 INFO L231 Difference]: Finished difference. Result has 277 places, 242 transitions, 2729 flow [2024-06-28 03:40:47,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2568, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2729, PETRI_PLACES=277, PETRI_TRANSITIONS=242} [2024-06-28 03:40:47,902 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-28 03:40:47,902 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 242 transitions, 2729 flow [2024-06-28 03:40:47,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:47,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:47,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:47,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:40:47,902 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)] === [2024-06-28 03:40:47,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:47,902 INFO L85 PathProgramCache]: Analyzing trace with hash -118499356, now seen corresponding path program 11 times [2024-06-28 03:40:47,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:47,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837327468] [2024-06-28 03:40:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:47,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:48,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:48,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837327468] [2024-06-28 03:40:48,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837327468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:48,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:48,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:48,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212000192] [2024-06-28 03:40:48,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:48,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:48,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:48,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:48,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:49,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:49,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 242 transitions, 2729 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:49,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:49,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:49,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:49,451 INFO L124 PetriNetUnfolderBase]: 670/1222 cut-off events. [2024-06-28 03:40:49,451 INFO L125 PetriNetUnfolderBase]: For 129420/129420 co-relation queries the response was YES. [2024-06-28 03:40:49,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9017 conditions, 1222 events. 670/1222 cut-off events. For 129420/129420 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6516 event pairs, 100 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 8895. Up to 954 conditions per place. [2024-06-28 03:40:49,462 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 185 selfloop transitions, 74 changer transitions 0/261 dead transitions. [2024-06-28 03:40:49,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 261 transitions, 3337 flow [2024-06-28 03:40:49,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:49,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 03:40:49,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 03:40:49,463 INFO L175 Difference]: Start difference. First operand has 277 places, 242 transitions, 2729 flow. Second operand 10 states and 123 transitions. [2024-06-28 03:40:49,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 261 transitions, 3337 flow [2024-06-28 03:40:49,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 261 transitions, 3161 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:49,837 INFO L231 Difference]: Finished difference. Result has 277 places, 246 transitions, 2773 flow [2024-06-28 03:40:49,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2773, PETRI_PLACES=277, PETRI_TRANSITIONS=246} [2024-06-28 03:40:49,838 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-28 03:40:49,838 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 246 transitions, 2773 flow [2024-06-28 03:40:49,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:49,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:49,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:49,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:40:49,838 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)] === [2024-06-28 03:40:49,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:49,839 INFO L85 PathProgramCache]: Analyzing trace with hash -118736692, now seen corresponding path program 18 times [2024-06-28 03:40:49,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:49,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889892452] [2024-06-28 03:40:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:49,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:50,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:50,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889892452] [2024-06-28 03:40:50,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889892452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:50,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:50,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:50,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47291570] [2024-06-28 03:40:50,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:50,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:50,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:50,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:50,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:50,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:50,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 246 transitions, 2773 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:50,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:50,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:50,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:51,003 INFO L124 PetriNetUnfolderBase]: 647/1183 cut-off events. [2024-06-28 03:40:51,003 INFO L125 PetriNetUnfolderBase]: For 125165/125165 co-relation queries the response was YES. [2024-06-28 03:40:51,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7575 conditions, 1183 events. 647/1183 cut-off events. For 125165/125165 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6311 event pairs, 81 based on Foata normal form. 16/1197 useless extension candidates. Maximal degree in co-relation 7453. Up to 809 conditions per place. [2024-06-28 03:40:51,013 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 175 selfloop transitions, 62 changer transitions 28/267 dead transitions. [2024-06-28 03:40:51,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 267 transitions, 3375 flow [2024-06-28 03:40:51,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:51,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 03:40:51,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 03:40:51,014 INFO L175 Difference]: Start difference. First operand has 277 places, 246 transitions, 2773 flow. Second operand 10 states and 131 transitions. [2024-06-28 03:40:51,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 267 transitions, 3375 flow [2024-06-28 03:40:51,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 267 transitions, 3182 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:51,279 INFO L231 Difference]: Finished difference. Result has 281 places, 225 transitions, 2459 flow [2024-06-28 03:40:51,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2459, PETRI_PLACES=281, PETRI_TRANSITIONS=225} [2024-06-28 03:40:51,279 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-28 03:40:51,280 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 225 transitions, 2459 flow [2024-06-28 03:40:51,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:51,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:51,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:51,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:40:51,280 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)] === [2024-06-28 03:40:51,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:51,281 INFO L85 PathProgramCache]: Analyzing trace with hash -217841374, now seen corresponding path program 1 times [2024-06-28 03:40:51,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:51,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746848652] [2024-06-28 03:40:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:51,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:52,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:52,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746848652] [2024-06-28 03:40:52,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746848652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:52,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:52,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:52,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898275991] [2024-06-28 03:40:52,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:52,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:52,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:52,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:52,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:52,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 225 transitions, 2459 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:52,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:52,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:52,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:52,636 INFO L124 PetriNetUnfolderBase]: 570/1056 cut-off events. [2024-06-28 03:40:52,636 INFO L125 PetriNetUnfolderBase]: For 81556/81556 co-relation queries the response was YES. [2024-06-28 03:40:52,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6833 conditions, 1056 events. 570/1056 cut-off events. For 81556/81556 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5587 event pairs, 85 based on Foata normal form. 2/1056 useless extension candidates. Maximal degree in co-relation 6711. Up to 986 conditions per place. [2024-06-28 03:40:52,645 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 213 selfloop transitions, 27 changer transitions 0/242 dead transitions. [2024-06-28 03:40:52,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 242 transitions, 3006 flow [2024-06-28 03:40:52,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:52,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:52,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 03:40:52,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 03:40:52,646 INFO L175 Difference]: Start difference. First operand has 281 places, 225 transitions, 2459 flow. Second operand 10 states and 112 transitions. [2024-06-28 03:40:52,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 242 transitions, 3006 flow [2024-06-28 03:40:52,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 242 transitions, 2794 flow, removed 5 selfloop flow, removed 17 redundant places. [2024-06-28 03:40:52,842 INFO L231 Difference]: Finished difference. Result has 273 places, 230 transitions, 2377 flow [2024-06-28 03:40:52,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2377, PETRI_PLACES=273, PETRI_TRANSITIONS=230} [2024-06-28 03:40:52,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-28 03:40:52,842 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 230 transitions, 2377 flow [2024-06-28 03:40:52,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:52,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:52,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:52,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:40:52,843 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)] === [2024-06-28 03:40:52,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:52,843 INFO L85 PathProgramCache]: Analyzing trace with hash -897090206, now seen corresponding path program 2 times [2024-06-28 03:40:52,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:52,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718846009] [2024-06-28 03:40:52,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:52,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:53,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:53,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718846009] [2024-06-28 03:40:53,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718846009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:53,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:53,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:53,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151501090] [2024-06-28 03:40:53,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:53,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:53,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:53,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:53,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:54,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:54,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 230 transitions, 2377 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:54,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:54,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:54,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:54,413 INFO L124 PetriNetUnfolderBase]: 574/1064 cut-off events. [2024-06-28 03:40:54,414 INFO L125 PetriNetUnfolderBase]: For 77921/77921 co-relation queries the response was YES. [2024-06-28 03:40:54,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6785 conditions, 1064 events. 574/1064 cut-off events. For 77921/77921 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5650 event pairs, 87 based on Foata normal form. 2/1064 useless extension candidates. Maximal degree in co-relation 6663. Up to 1021 conditions per place. [2024-06-28 03:40:54,428 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 222 selfloop transitions, 19 changer transitions 0/243 dead transitions. [2024-06-28 03:40:54,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 243 transitions, 2911 flow [2024-06-28 03:40:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:40:54,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:40:54,429 INFO L175 Difference]: Start difference. First operand has 273 places, 230 transitions, 2377 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:40:54,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 243 transitions, 2911 flow [2024-06-28 03:40:54,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 243 transitions, 2789 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:54,681 INFO L231 Difference]: Finished difference. Result has 275 places, 231 transitions, 2321 flow [2024-06-28 03:40:54,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2255, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2321, PETRI_PLACES=275, PETRI_TRANSITIONS=231} [2024-06-28 03:40:54,682 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-28 03:40:54,682 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 231 transitions, 2321 flow [2024-06-28 03:40:54,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:54,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:54,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:54,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:40:54,683 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)] === [2024-06-28 03:40:54,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:54,683 INFO L85 PathProgramCache]: Analyzing trace with hash -258671424, now seen corresponding path program 3 times [2024-06-28 03:40:54,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:54,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915471758] [2024-06-28 03:40:54,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:54,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:55,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:55,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915471758] [2024-06-28 03:40:55,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915471758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:55,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:55,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:55,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407016315] [2024-06-28 03:40:55,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:55,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:55,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:55,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:55,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:55,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:55,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 231 transitions, 2321 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:55,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:55,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:55,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:56,136 INFO L124 PetriNetUnfolderBase]: 578/1072 cut-off events. [2024-06-28 03:40:56,137 INFO L125 PetriNetUnfolderBase]: For 79403/79403 co-relation queries the response was YES. [2024-06-28 03:40:56,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 1072 events. 578/1072 cut-off events. For 79403/79403 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5685 event pairs, 84 based on Foata normal form. 2/1072 useless extension candidates. Maximal degree in co-relation 6665. Up to 1026 conditions per place. [2024-06-28 03:40:56,146 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 222 selfloop transitions, 20 changer transitions 0/244 dead transitions. [2024-06-28 03:40:56,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 244 transitions, 2859 flow [2024-06-28 03:40:56,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:56,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:56,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:40:56,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:40:56,147 INFO L175 Difference]: Start difference. First operand has 275 places, 231 transitions, 2321 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:40:56,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 244 transitions, 2859 flow [2024-06-28 03:40:56,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 244 transitions, 2786 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:56,523 INFO L231 Difference]: Finished difference. Result has 276 places, 232 transitions, 2318 flow [2024-06-28 03:40:56,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2318, PETRI_PLACES=276, PETRI_TRANSITIONS=232} [2024-06-28 03:40:56,524 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-28 03:40:56,524 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 232 transitions, 2318 flow [2024-06-28 03:40:56,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:56,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:56,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:56,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:40:56,525 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)] === [2024-06-28 03:40:56,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:56,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1767062212, now seen corresponding path program 4 times [2024-06-28 03:40:56,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:56,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643477976] [2024-06-28 03:40:56,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:56,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:57,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:57,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643477976] [2024-06-28 03:40:57,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643477976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:57,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:57,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:57,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680131159] [2024-06-28 03:40:57,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:57,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:57,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:57,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:57,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:57,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:57,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 232 transitions, 2318 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:57,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:57,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:57,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:58,049 INFO L124 PetriNetUnfolderBase]: 582/1080 cut-off events. [2024-06-28 03:40:58,049 INFO L125 PetriNetUnfolderBase]: For 81447/81447 co-relation queries the response was YES. [2024-06-28 03:40:58,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6834 conditions, 1080 events. 582/1080 cut-off events. For 81447/81447 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5745 event pairs, 89 based on Foata normal form. 2/1080 useless extension candidates. Maximal degree in co-relation 6711. Up to 1038 conditions per place. [2024-06-28 03:40:58,060 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 223 selfloop transitions, 19 changer transitions 0/244 dead transitions. [2024-06-28 03:40:58,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 244 transitions, 2854 flow [2024-06-28 03:40:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:58,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:40:58,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:40:58,061 INFO L175 Difference]: Start difference. First operand has 276 places, 232 transitions, 2318 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:40:58,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 244 transitions, 2854 flow [2024-06-28 03:40:58,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 244 transitions, 2775 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:58,320 INFO L231 Difference]: Finished difference. Result has 276 places, 233 transitions, 2310 flow [2024-06-28 03:40:58,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2310, PETRI_PLACES=276, PETRI_TRANSITIONS=233} [2024-06-28 03:40:58,321 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-28 03:40:58,321 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 233 transitions, 2310 flow [2024-06-28 03:40:58,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:58,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:58,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:58,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:40:58,321 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)] === [2024-06-28 03:40:58,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:58,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2103759606, now seen corresponding path program 12 times [2024-06-28 03:40:58,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:58,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118203188] [2024-06-28 03:40:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:58,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:59,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:59,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:59,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118203188] [2024-06-28 03:40:59,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118203188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:59,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:59,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:59,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112673330] [2024-06-28 03:40:59,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:59,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:59,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:59,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:59,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:59,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:59,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 233 transitions, 2310 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:59,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:59,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:59,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:59,609 INFO L124 PetriNetUnfolderBase]: 588/1090 cut-off events. [2024-06-28 03:40:59,609 INFO L125 PetriNetUnfolderBase]: For 83584/83584 co-relation queries the response was YES. [2024-06-28 03:40:59,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6888 conditions, 1090 events. 588/1090 cut-off events. For 83584/83584 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5795 event pairs, 86 based on Foata normal form. 2/1090 useless extension candidates. Maximal degree in co-relation 6765. Up to 995 conditions per place. [2024-06-28 03:40:59,619 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 214 selfloop transitions, 34 changer transitions 0/250 dead transitions. [2024-06-28 03:40:59,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 250 transitions, 2896 flow [2024-06-28 03:40:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:59,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:59,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:40:59,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:40:59,620 INFO L175 Difference]: Start difference. First operand has 276 places, 233 transitions, 2310 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:40:59,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 250 transitions, 2896 flow [2024-06-28 03:40:59,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 250 transitions, 2837 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:59,880 INFO L231 Difference]: Finished difference. Result has 279 places, 235 transitions, 2376 flow [2024-06-28 03:40:59,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2376, PETRI_PLACES=279, PETRI_TRANSITIONS=235} [2024-06-28 03:40:59,881 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-28 03:40:59,881 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 235 transitions, 2376 flow [2024-06-28 03:40:59,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:59,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:59,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:59,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:40:59,881 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)] === [2024-06-28 03:40:59,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:59,882 INFO L85 PathProgramCache]: Analyzing trace with hash -254670694, now seen corresponding path program 19 times [2024-06-28 03:40:59,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:59,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601439565] [2024-06-28 03:40:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:59,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:00,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:00,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601439565] [2024-06-28 03:41:00,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601439565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:00,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:00,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:00,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375540681] [2024-06-28 03:41:00,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:00,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:00,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:00,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:00,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:00,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 235 transitions, 2376 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:00,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:00,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:00,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:01,172 INFO L124 PetriNetUnfolderBase]: 612/1142 cut-off events. [2024-06-28 03:41:01,172 INFO L125 PetriNetUnfolderBase]: For 130485/130485 co-relation queries the response was YES. [2024-06-28 03:41:01,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7108 conditions, 1142 events. 612/1142 cut-off events. For 130485/130485 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6145 event pairs, 90 based on Foata normal form. 14/1154 useless extension candidates. Maximal degree in co-relation 6984. Up to 995 conditions per place. [2024-06-28 03:41:01,181 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 213 selfloop transitions, 28 changer transitions 12/255 dead transitions. [2024-06-28 03:41:01,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 255 transitions, 2975 flow [2024-06-28 03:41:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:01,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:41:01,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 03:41:01,182 INFO L175 Difference]: Start difference. First operand has 279 places, 235 transitions, 2376 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:41:01,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 255 transitions, 2975 flow [2024-06-28 03:41:01,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 255 transitions, 2873 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:01,426 INFO L231 Difference]: Finished difference. Result has 281 places, 231 transitions, 2307 flow [2024-06-28 03:41:01,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2307, PETRI_PLACES=281, PETRI_TRANSITIONS=231} [2024-06-28 03:41:01,427 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-28 03:41:01,427 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 231 transitions, 2307 flow [2024-06-28 03:41:01,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:01,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:01,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:01,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:41:01,427 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)] === [2024-06-28 03:41:01,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash -886596030, now seen corresponding path program 13 times [2024-06-28 03:41:01,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:01,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121237508] [2024-06-28 03:41:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:01,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:02,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:02,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121237508] [2024-06-28 03:41:02,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121237508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:02,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:02,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:02,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714681207] [2024-06-28 03:41:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:02,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:02,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:02,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:02,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:02,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 231 transitions, 2307 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:02,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:02,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:02,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:02,936 INFO L124 PetriNetUnfolderBase]: 590/1096 cut-off events. [2024-06-28 03:41:02,936 INFO L125 PetriNetUnfolderBase]: For 86988/86988 co-relation queries the response was YES. [2024-06-28 03:41:02,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6931 conditions, 1096 events. 590/1096 cut-off events. For 86988/86988 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5869 event pairs, 86 based on Foata normal form. 2/1096 useless extension candidates. Maximal degree in co-relation 6806. Up to 1043 conditions per place. [2024-06-28 03:41:02,946 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 224 selfloop transitions, 21 changer transitions 0/247 dead transitions. [2024-06-28 03:41:02,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 247 transitions, 2881 flow [2024-06-28 03:41:02,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:02,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:41:02,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:41:02,947 INFO L175 Difference]: Start difference. First operand has 281 places, 231 transitions, 2307 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:41:02,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 247 transitions, 2881 flow [2024-06-28 03:41:03,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 247 transitions, 2761 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:03,250 INFO L231 Difference]: Finished difference. Result has 280 places, 235 transitions, 2290 flow [2024-06-28 03:41:03,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2191, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2290, PETRI_PLACES=280, PETRI_TRANSITIONS=235} [2024-06-28 03:41:03,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-28 03:41:03,250 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 235 transitions, 2290 flow [2024-06-28 03:41:03,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:03,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:03,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:03,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:41:03,251 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)] === [2024-06-28 03:41:03,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:03,251 INFO L85 PathProgramCache]: Analyzing trace with hash -886826670, now seen corresponding path program 14 times [2024-06-28 03:41:03,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:03,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655536549] [2024-06-28 03:41:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:03,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:04,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:04,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655536549] [2024-06-28 03:41:04,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655536549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:04,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:04,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:04,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544428346] [2024-06-28 03:41:04,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:04,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:04,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:04,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:04,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:04,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:04,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 235 transitions, 2290 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:04,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:04,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:04,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:04,614 INFO L124 PetriNetUnfolderBase]: 596/1106 cut-off events. [2024-06-28 03:41:04,614 INFO L125 PetriNetUnfolderBase]: For 88745/88745 co-relation queries the response was YES. [2024-06-28 03:41:04,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6939 conditions, 1106 events. 596/1106 cut-off events. For 88745/88745 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5938 event pairs, 88 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 6813. Up to 1053 conditions per place. [2024-06-28 03:41:04,624 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 227 selfloop transitions, 21 changer transitions 0/250 dead transitions. [2024-06-28 03:41:04,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 250 transitions, 2852 flow [2024-06-28 03:41:04,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 03:41:04,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 03:41:04,625 INFO L175 Difference]: Start difference. First operand has 280 places, 235 transitions, 2290 flow. Second operand 10 states and 112 transitions. [2024-06-28 03:41:04,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 250 transitions, 2852 flow [2024-06-28 03:41:04,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 250 transitions, 2804 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:41:05,003 INFO L231 Difference]: Finished difference. Result has 284 places, 237 transitions, 2323 flow [2024-06-28 03:41:05,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2323, PETRI_PLACES=284, PETRI_TRANSITIONS=237} [2024-06-28 03:41:05,006 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-28 03:41:05,006 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 237 transitions, 2323 flow [2024-06-28 03:41:05,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:05,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:05,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:05,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:41:05,007 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)] === [2024-06-28 03:41:05,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:05,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2146873098, now seen corresponding path program 15 times [2024-06-28 03:41:05,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:05,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136921301] [2024-06-28 03:41:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:05,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:05,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136921301] [2024-06-28 03:41:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136921301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:05,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:05,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:05,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705248268] [2024-06-28 03:41:05,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:05,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:05,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:05,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:05,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:05,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 237 transitions, 2323 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:05,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:05,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:05,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:06,264 INFO L124 PetriNetUnfolderBase]: 602/1116 cut-off events. [2024-06-28 03:41:06,264 INFO L125 PetriNetUnfolderBase]: For 91150/91150 co-relation queries the response was YES. [2024-06-28 03:41:06,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 1116 events. 602/1116 cut-off events. For 91150/91150 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5988 event pairs, 83 based on Foata normal form. 2/1116 useless extension candidates. Maximal degree in co-relation 6924. Up to 946 conditions per place. [2024-06-28 03:41:06,276 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 53 changer transitions 0/253 dead transitions. [2024-06-28 03:41:06,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 253 transitions, 3095 flow [2024-06-28 03:41:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:06,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:41:06,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:41:06,279 INFO L175 Difference]: Start difference. First operand has 284 places, 237 transitions, 2323 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:41:06,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 253 transitions, 3095 flow [2024-06-28 03:41:06,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 253 transitions, 3028 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:06,580 INFO L231 Difference]: Finished difference. Result has 285 places, 239 transitions, 2419 flow [2024-06-28 03:41:06,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2419, PETRI_PLACES=285, PETRI_TRANSITIONS=239} [2024-06-28 03:41:06,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 03:41:06,581 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 239 transitions, 2419 flow [2024-06-28 03:41:06,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:06,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:06,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:06,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:41:06,582 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)] === [2024-06-28 03:41:06,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash -254843674, now seen corresponding path program 20 times [2024-06-28 03:41:06,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:06,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473537336] [2024-06-28 03:41:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:06,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:07,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:07,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:07,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473537336] [2024-06-28 03:41:07,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473537336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:07,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:07,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:07,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071163199] [2024-06-28 03:41:07,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:07,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:07,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:07,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:07,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:07,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:07,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 239 transitions, 2419 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:07,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:07,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:07,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:07,680 INFO L124 PetriNetUnfolderBase]: 606/1124 cut-off events. [2024-06-28 03:41:07,681 INFO L125 PetriNetUnfolderBase]: For 93107/93107 co-relation queries the response was YES. [2024-06-28 03:41:07,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7182 conditions, 1124 events. 606/1124 cut-off events. For 93107/93107 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6054 event pairs, 96 based on Foata normal form. 2/1124 useless extension candidates. Maximal degree in co-relation 7054. Up to 1063 conditions per place. [2024-06-28 03:41:07,692 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 217 selfloop transitions, 31 changer transitions 0/250 dead transitions. [2024-06-28 03:41:07,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 250 transitions, 2956 flow [2024-06-28 03:41:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:41:07,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:41:07,693 INFO L175 Difference]: Start difference. First operand has 285 places, 239 transitions, 2419 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:41:07,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 250 transitions, 2956 flow [2024-06-28 03:41:07,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 250 transitions, 2665 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:07,974 INFO L231 Difference]: Finished difference. Result has 284 places, 240 transitions, 2215 flow [2024-06-28 03:41:07,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2128, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2215, PETRI_PLACES=284, PETRI_TRANSITIONS=240} [2024-06-28 03:41:07,974 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-28 03:41:07,974 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 240 transitions, 2215 flow [2024-06-28 03:41:07,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:07,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:07,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:07,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:41:07,975 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)] === [2024-06-28 03:41:07,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash -601496160, now seen corresponding path program 16 times [2024-06-28 03:41:07,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:07,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087332310] [2024-06-28 03:41:07,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:07,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:08,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:08,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087332310] [2024-06-28 03:41:08,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087332310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:08,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:08,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:08,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713245735] [2024-06-28 03:41:08,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:08,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:08,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:08,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:08,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:08,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:08,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 240 transitions, 2215 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:08,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:08,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:08,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:09,348 INFO L124 PetriNetUnfolderBase]: 612/1134 cut-off events. [2024-06-28 03:41:09,349 INFO L125 PetriNetUnfolderBase]: For 94777/94777 co-relation queries the response was YES. [2024-06-28 03:41:09,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6874 conditions, 1134 events. 612/1134 cut-off events. For 94777/94777 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6112 event pairs, 94 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 6748. Up to 1082 conditions per place. [2024-06-28 03:41:09,364 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 231 selfloop transitions, 21 changer transitions 0/254 dead transitions. [2024-06-28 03:41:09,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 254 transitions, 2795 flow [2024-06-28 03:41:09,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:09,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:41:09,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:41:09,365 INFO L175 Difference]: Start difference. First operand has 284 places, 240 transitions, 2215 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:41:09,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 254 transitions, 2795 flow [2024-06-28 03:41:09,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 254 transitions, 2719 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:09,726 INFO L231 Difference]: Finished difference. Result has 286 places, 242 transitions, 2234 flow [2024-06-28 03:41:09,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2234, PETRI_PLACES=286, PETRI_TRANSITIONS=242} [2024-06-28 03:41:09,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2024-06-28 03:41:09,726 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 242 transitions, 2234 flow [2024-06-28 03:41:09,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:09,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:09,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:09,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:41:09,727 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)] === [2024-06-28 03:41:09,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:09,727 INFO L85 PathProgramCache]: Analyzing trace with hash -591011712, now seen corresponding path program 5 times [2024-06-28 03:41:09,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:09,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451618402] [2024-06-28 03:41:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:09,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:10,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:10,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451618402] [2024-06-28 03:41:10,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451618402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:10,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:10,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:10,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565495348] [2024-06-28 03:41:10,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:10,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:10,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:10,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:10,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:10,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:10,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 242 transitions, 2234 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:10,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:10,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:10,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:11,086 INFO L124 PetriNetUnfolderBase]: 609/1129 cut-off events. [2024-06-28 03:41:11,086 INFO L125 PetriNetUnfolderBase]: For 88103/88103 co-relation queries the response was YES. [2024-06-28 03:41:11,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6642 conditions, 1129 events. 609/1129 cut-off events. For 88103/88103 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6077 event pairs, 94 based on Foata normal form. 2/1129 useless extension candidates. Maximal degree in co-relation 6515. Up to 1090 conditions per place. [2024-06-28 03:41:11,097 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 235 selfloop transitions, 16 changer transitions 0/253 dead transitions. [2024-06-28 03:41:11,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 253 transitions, 2760 flow [2024-06-28 03:41:11,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:11,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:41:11,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:41:11,098 INFO L175 Difference]: Start difference. First operand has 286 places, 242 transitions, 2234 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:41:11,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 253 transitions, 2760 flow [2024-06-28 03:41:11,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 253 transitions, 2685 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:11,427 INFO L231 Difference]: Finished difference. Result has 288 places, 242 transitions, 2195 flow [2024-06-28 03:41:11,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2195, PETRI_PLACES=288, PETRI_TRANSITIONS=242} [2024-06-28 03:41:11,427 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-28 03:41:11,427 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 242 transitions, 2195 flow [2024-06-28 03:41:11,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:11,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:11,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:11,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:41:11,428 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)] === [2024-06-28 03:41:11,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:11,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2103581790, now seen corresponding path program 21 times [2024-06-28 03:41:11,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:11,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837489645] [2024-06-28 03:41:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:11,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:12,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:12,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837489645] [2024-06-28 03:41:12,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837489645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:12,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:12,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:12,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335702445] [2024-06-28 03:41:12,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:12,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:12,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:12,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:12,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 242 transitions, 2195 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:12,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:12,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:12,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:12,548 INFO L124 PetriNetUnfolderBase]: 613/1137 cut-off events. [2024-06-28 03:41:12,549 INFO L125 PetriNetUnfolderBase]: For 89955/89955 co-relation queries the response was YES. [2024-06-28 03:41:12,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6655 conditions, 1137 events. 613/1137 cut-off events. For 89955/89955 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6146 event pairs, 95 based on Foata normal form. 2/1137 useless extension candidates. Maximal degree in co-relation 6527. Up to 1045 conditions per place. [2024-06-28 03:41:12,559 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 219 selfloop transitions, 34 changer transitions 0/255 dead transitions. [2024-06-28 03:41:12,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 255 transitions, 2936 flow [2024-06-28 03:41:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 03:41:12,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 03:41:12,560 INFO L175 Difference]: Start difference. First operand has 288 places, 242 transitions, 2195 flow. Second operand 10 states and 112 transitions. [2024-06-28 03:41:12,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 255 transitions, 2936 flow [2024-06-28 03:41:13,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 255 transitions, 2830 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:13,093 INFO L231 Difference]: Finished difference. Result has 287 places, 243 transitions, 2182 flow [2024-06-28 03:41:13,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2182, PETRI_PLACES=287, PETRI_TRANSITIONS=243} [2024-06-28 03:41:13,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-28 03:41:13,093 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 243 transitions, 2182 flow [2024-06-28 03:41:13,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:13,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:13,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:13,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:41:13,094 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)] === [2024-06-28 03:41:13,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:13,094 INFO L85 PathProgramCache]: Analyzing trace with hash -886833180, now seen corresponding path program 17 times [2024-06-28 03:41:13,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:13,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491511614] [2024-06-28 03:41:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:13,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:13,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:13,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:13,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491511614] [2024-06-28 03:41:13,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491511614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:13,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:13,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:13,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694983349] [2024-06-28 03:41:13,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:13,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:13,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:13,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:13,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:13,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:13,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 243 transitions, 2182 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:13,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:13,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:13,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:14,376 INFO L124 PetriNetUnfolderBase]: 619/1147 cut-off events. [2024-06-28 03:41:14,376 INFO L125 PetriNetUnfolderBase]: For 91872/91872 co-relation queries the response was YES. [2024-06-28 03:41:14,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 1147 events. 619/1147 cut-off events. For 91872/91872 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6222 event pairs, 91 based on Foata normal form. 2/1147 useless extension candidates. Maximal degree in co-relation 6532. Up to 1077 conditions per place. [2024-06-28 03:41:14,386 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 231 selfloop transitions, 27 changer transitions 0/260 dead transitions. [2024-06-28 03:41:14,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 260 transitions, 2788 flow [2024-06-28 03:41:14,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:14,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:14,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:41:14,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:41:14,387 INFO L175 Difference]: Start difference. First operand has 287 places, 243 transitions, 2182 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:41:14,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 260 transitions, 2788 flow [2024-06-28 03:41:14,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 260 transitions, 2641 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:14,867 INFO L231 Difference]: Finished difference. Result has 289 places, 245 transitions, 2146 flow [2024-06-28 03:41:14,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2146, PETRI_PLACES=289, PETRI_TRANSITIONS=245} [2024-06-28 03:41:14,868 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-28 03:41:14,868 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 245 transitions, 2146 flow [2024-06-28 03:41:14,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:14,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:14,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:14,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:41:14,868 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)] === [2024-06-28 03:41:14,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:14,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1499073472, now seen corresponding path program 18 times [2024-06-28 03:41:14,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:14,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946582095] [2024-06-28 03:41:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:14,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:15,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:15,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946582095] [2024-06-28 03:41:15,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946582095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:15,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:15,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:15,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839577756] [2024-06-28 03:41:15,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:15,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:15,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:15,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:15,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:15,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:15,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 245 transitions, 2146 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:15,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:15,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:15,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:16,184 INFO L124 PetriNetUnfolderBase]: 631/1167 cut-off events. [2024-06-28 03:41:16,184 INFO L125 PetriNetUnfolderBase]: For 93802/93802 co-relation queries the response was YES. [2024-06-28 03:41:16,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6628 conditions, 1167 events. 631/1167 cut-off events. For 93802/93802 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6342 event pairs, 91 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 6502. Up to 1079 conditions per place. [2024-06-28 03:41:16,195 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 231 selfloop transitions, 30 changer transitions 0/263 dead transitions. [2024-06-28 03:41:16,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 263 transitions, 2758 flow [2024-06-28 03:41:16,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:16,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 03:41:16,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-28 03:41:16,196 INFO L175 Difference]: Start difference. First operand has 289 places, 245 transitions, 2146 flow. Second operand 10 states and 118 transitions. [2024-06-28 03:41:16,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 263 transitions, 2758 flow [2024-06-28 03:41:16,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 263 transitions, 2667 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:16,498 INFO L231 Difference]: Finished difference. Result has 290 places, 249 transitions, 2174 flow [2024-06-28 03:41:16,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2174, PETRI_PLACES=290, PETRI_TRANSITIONS=249} [2024-06-28 03:41:16,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-28 03:41:16,499 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 249 transitions, 2174 flow [2024-06-28 03:41:16,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:16,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:16,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:16,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:41:16,499 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)] === [2024-06-28 03:41:16,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:16,499 INFO L85 PathProgramCache]: Analyzing trace with hash -886833366, now seen corresponding path program 22 times [2024-06-28 03:41:16,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:16,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528659853] [2024-06-28 03:41:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:16,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:17,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:17,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528659853] [2024-06-28 03:41:17,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528659853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:17,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:17,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:17,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913319744] [2024-06-28 03:41:17,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:17,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:17,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:17,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:17,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:17,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:17,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 249 transitions, 2174 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:17,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:17,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:17,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:17,726 INFO L124 PetriNetUnfolderBase]: 655/1219 cut-off events. [2024-06-28 03:41:17,726 INFO L125 PetriNetUnfolderBase]: For 151502/151502 co-relation queries the response was YES. [2024-06-28 03:41:17,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6802 conditions, 1219 events. 655/1219 cut-off events. For 151502/151502 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6665 event pairs, 99 based on Foata normal form. 14/1231 useless extension candidates. Maximal degree in co-relation 6675. Up to 1089 conditions per place. [2024-06-28 03:41:17,737 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 233 selfloop transitions, 16 changer transitions 17/268 dead transitions. [2024-06-28 03:41:17,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 268 transitions, 2797 flow [2024-06-28 03:41:17,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:17,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:17,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 03:41:17,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 03:41:17,738 INFO L175 Difference]: Start difference. First operand has 290 places, 249 transitions, 2174 flow. Second operand 10 states and 117 transitions. [2024-06-28 03:41:17,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 268 transitions, 2797 flow [2024-06-28 03:41:18,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 268 transitions, 2718 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:18,035 INFO L231 Difference]: Finished difference. Result has 293 places, 240 transitions, 2075 flow [2024-06-28 03:41:18,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2075, PETRI_PLACES=293, PETRI_TRANSITIONS=240} [2024-06-28 03:41:18,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-06-28 03:41:18,035 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 240 transitions, 2075 flow [2024-06-28 03:41:18,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:18,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:18,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:18,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:41:18,036 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)] === [2024-06-28 03:41:18,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:18,036 INFO L85 PathProgramCache]: Analyzing trace with hash -248414398, now seen corresponding path program 19 times [2024-06-28 03:41:18,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:18,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751664383] [2024-06-28 03:41:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:18,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:18,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:18,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751664383] [2024-06-28 03:41:18,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751664383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:18,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:18,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:18,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173852397] [2024-06-28 03:41:18,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:18,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:18,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:18,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:18,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 240 transitions, 2075 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:18,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:18,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:18,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:19,359 INFO L124 PetriNetUnfolderBase]: 601/1123 cut-off events. [2024-06-28 03:41:19,359 INFO L125 PetriNetUnfolderBase]: For 87686/87686 co-relation queries the response was YES. [2024-06-28 03:41:19,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6162 conditions, 1123 events. 601/1123 cut-off events. For 87686/87686 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6104 event pairs, 87 based on Foata normal form. 2/1123 useless extension candidates. Maximal degree in co-relation 6034. Up to 1029 conditions per place. [2024-06-28 03:41:19,369 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 223 selfloop transitions, 32 changer transitions 0/257 dead transitions. [2024-06-28 03:41:19,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 257 transitions, 2829 flow [2024-06-28 03:41:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:19,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:41:19,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 03:41:19,370 INFO L175 Difference]: Start difference. First operand has 293 places, 240 transitions, 2075 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:41:19,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 257 transitions, 2829 flow [2024-06-28 03:41:19,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 257 transitions, 2767 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:19,682 INFO L231 Difference]: Finished difference. Result has 290 places, 240 transitions, 2086 flow [2024-06-28 03:41:19,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2086, PETRI_PLACES=290, PETRI_TRANSITIONS=240} [2024-06-28 03:41:19,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-28 03:41:19,683 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 240 transitions, 2086 flow [2024-06-28 03:41:19,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:19,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:19,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:19,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:41:19,683 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)] === [2024-06-28 03:41:19,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:19,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2141665294, now seen corresponding path program 23 times [2024-06-28 03:41:19,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:19,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136852906] [2024-06-28 03:41:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:19,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:20,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:20,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136852906] [2024-06-28 03:41:20,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136852906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:20,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:20,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:20,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65985117] [2024-06-28 03:41:20,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:20,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:20,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:20,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:20,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:20,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 240 transitions, 2086 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:20,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:20,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:20,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:20,957 INFO L124 PetriNetUnfolderBase]: 598/1118 cut-off events. [2024-06-28 03:41:20,958 INFO L125 PetriNetUnfolderBase]: For 76385/76385 co-relation queries the response was YES. [2024-06-28 03:41:20,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5926 conditions, 1118 events. 598/1118 cut-off events. For 76385/76385 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6060 event pairs, 93 based on Foata normal form. 2/1118 useless extension candidates. Maximal degree in co-relation 5799. Up to 1069 conditions per place. [2024-06-28 03:41:20,968 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 226 selfloop transitions, 22 changer transitions 0/250 dead transitions. [2024-06-28 03:41:20,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 250 transitions, 2604 flow [2024-06-28 03:41:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:20,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:41:20,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:41:20,969 INFO L175 Difference]: Start difference. First operand has 290 places, 240 transitions, 2086 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:41:20,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 250 transitions, 2604 flow [2024-06-28 03:41:21,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 250 transitions, 2408 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:21,220 INFO L231 Difference]: Finished difference. Result has 289 places, 240 transitions, 1938 flow [2024-06-28 03:41:21,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1938, PETRI_PLACES=289, PETRI_TRANSITIONS=240} [2024-06-28 03:41:21,221 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-28 03:41:21,221 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 240 transitions, 1938 flow [2024-06-28 03:41:21,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:21,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:21,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:21,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:41:21,221 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)] === [2024-06-28 03:41:21,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:21,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1499304112, now seen corresponding path program 20 times [2024-06-28 03:41:21,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:21,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277686209] [2024-06-28 03:41:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:21,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:22,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:22,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277686209] [2024-06-28 03:41:22,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277686209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:22,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:22,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:22,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214161002] [2024-06-28 03:41:22,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:22,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:22,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:22,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:22,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:22,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:22,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 240 transitions, 1938 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:22,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:22,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:22,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:22,746 INFO L124 PetriNetUnfolderBase]: 594/1112 cut-off events. [2024-06-28 03:41:22,746 INFO L125 PetriNetUnfolderBase]: For 67668/67668 co-relation queries the response was YES. [2024-06-28 03:41:22,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5461 conditions, 1112 events. 594/1112 cut-off events. For 67668/67668 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6054 event pairs, 86 based on Foata normal form. 2/1112 useless extension candidates. Maximal degree in co-relation 5334. Up to 1038 conditions per place. [2024-06-28 03:41:22,756 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 225 selfloop transitions, 26 changer transitions 0/253 dead transitions. [2024-06-28 03:41:22,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 253 transitions, 2476 flow [2024-06-28 03:41:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:22,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 03:41:22,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 03:41:22,757 INFO L175 Difference]: Start difference. First operand has 289 places, 240 transitions, 1938 flow. Second operand 10 states and 116 transitions. [2024-06-28 03:41:22,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 253 transitions, 2476 flow [2024-06-28 03:41:22,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 253 transitions, 2404 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:22,975 INFO L231 Difference]: Finished difference. Result has 290 places, 240 transitions, 1923 flow [2024-06-28 03:41:22,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1923, PETRI_PLACES=290, PETRI_TRANSITIONS=240} [2024-06-28 03:41:22,975 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-28 03:41:22,975 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 240 transitions, 1923 flow [2024-06-28 03:41:22,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:22,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:22,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:22,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:41:22,975 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)] === [2024-06-28 03:41:22,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash -16467686, now seen corresponding path program 1 times [2024-06-28 03:41:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:22,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600078361] [2024-06-28 03:41:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:22,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:23,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:23,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600078361] [2024-06-28 03:41:23,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600078361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:23,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:23,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:23,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607450776] [2024-06-28 03:41:23,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:23,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:23,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:23,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:23,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:23,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:23,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 240 transitions, 1923 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:23,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:23,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:23,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:24,387 INFO L124 PetriNetUnfolderBase]: 642/1212 cut-off events. [2024-06-28 03:41:24,387 INFO L125 PetriNetUnfolderBase]: For 153296/153296 co-relation queries the response was YES. [2024-06-28 03:41:24,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6932 conditions, 1212 events. 642/1212 cut-off events. For 153296/153296 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6678 event pairs, 96 based on Foata normal form. 8/1218 useless extension candidates. Maximal degree in co-relation 6804. Up to 596 conditions per place. [2024-06-28 03:41:24,398 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 153 selfloop transitions, 98 changer transitions 18/271 dead transitions. [2024-06-28 03:41:24,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 271 transitions, 2775 flow [2024-06-28 03:41:24,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:41:24,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-28 03:41:24,399 INFO L175 Difference]: Start difference. First operand has 290 places, 240 transitions, 1923 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:41:24,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 271 transitions, 2775 flow [2024-06-28 03:41:24,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 271 transitions, 2706 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:24,862 INFO L231 Difference]: Finished difference. Result has 292 places, 236 transitions, 2032 flow [2024-06-28 03:41:24,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2032, PETRI_PLACES=292, PETRI_TRANSITIONS=236} [2024-06-28 03:41:24,862 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-28 03:41:24,862 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 236 transitions, 2032 flow [2024-06-28 03:41:24,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:24,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:24,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:24,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:41:24,863 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)] === [2024-06-28 03:41:24,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:24,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1264248402, now seen corresponding path program 2 times [2024-06-28 03:41:24,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:24,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982609579] [2024-06-28 03:41:24,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:24,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:25,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:25,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982609579] [2024-06-28 03:41:25,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982609579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:25,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:25,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:25,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626766003] [2024-06-28 03:41:25,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:25,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:25,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:25,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:25,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:25,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:25,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 236 transitions, 2032 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:25,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:25,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:25,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:26,210 INFO L124 PetriNetUnfolderBase]: 630/1192 cut-off events. [2024-06-28 03:41:26,210 INFO L125 PetriNetUnfolderBase]: For 166491/166491 co-relation queries the response was YES. [2024-06-28 03:41:26,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7078 conditions, 1192 events. 630/1192 cut-off events. For 166491/166491 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6542 event pairs, 100 based on Foata normal form. 10/1200 useless extension candidates. Maximal degree in co-relation 6949. Up to 701 conditions per place. [2024-06-28 03:41:26,226 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 107 changer transitions 14/259 dead transitions. [2024-06-28 03:41:26,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 259 transitions, 2632 flow [2024-06-28 03:41:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:26,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 03:41:26,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 03:41:26,228 INFO L175 Difference]: Start difference. First operand has 292 places, 236 transitions, 2032 flow. Second operand 11 states and 139 transitions. [2024-06-28 03:41:26,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 259 transitions, 2632 flow [2024-06-28 03:41:26,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 259 transitions, 2493 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:26,682 INFO L231 Difference]: Finished difference. Result has 287 places, 233 transitions, 2090 flow [2024-06-28 03:41:26,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2090, PETRI_PLACES=287, PETRI_TRANSITIONS=233} [2024-06-28 03:41:26,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-28 03:41:26,683 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 233 transitions, 2090 flow [2024-06-28 03:41:26,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:26,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:26,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:26,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:41:26,684 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)] === [2024-06-28 03:41:26,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1788117334, now seen corresponding path program 3 times [2024-06-28 03:41:26,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:26,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590016085] [2024-06-28 03:41:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:26,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:27,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:27,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590016085] [2024-06-28 03:41:27,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590016085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:27,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:27,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138681945] [2024-06-28 03:41:27,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:27,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:27,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:27,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:27,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:27,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:27,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 233 transitions, 2090 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:27,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:27,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:27,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:27,938 INFO L124 PetriNetUnfolderBase]: 618/1172 cut-off events. [2024-06-28 03:41:27,938 INFO L125 PetriNetUnfolderBase]: For 147329/147329 co-relation queries the response was YES. [2024-06-28 03:41:27,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7108 conditions, 1172 events. 618/1172 cut-off events. For 147329/147329 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6417 event pairs, 96 based on Foata normal form. 8/1178 useless extension candidates. Maximal degree in co-relation 6982. Up to 691 conditions per place. [2024-06-28 03:41:27,949 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 105 changer transitions 14/255 dead transitions. [2024-06-28 03:41:27,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 255 transitions, 2668 flow [2024-06-28 03:41:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:41:27,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 03:41:27,950 INFO L175 Difference]: Start difference. First operand has 287 places, 233 transitions, 2090 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:41:27,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 255 transitions, 2668 flow [2024-06-28 03:41:28,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 255 transitions, 2450 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:28,382 INFO L231 Difference]: Finished difference. Result has 285 places, 230 transitions, 2066 flow [2024-06-28 03:41:28,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2066, PETRI_PLACES=285, PETRI_TRANSITIONS=230} [2024-06-28 03:41:28,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 03:41:28,382 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 230 transitions, 2066 flow [2024-06-28 03:41:28,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:28,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:28,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:28,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:41:28,383 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)] === [2024-06-28 03:41:28,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:28,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1787973184, now seen corresponding path program 4 times [2024-06-28 03:41:28,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:28,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717957387] [2024-06-28 03:41:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:28,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:29,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:29,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717957387] [2024-06-28 03:41:29,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717957387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:29,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:29,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:29,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205582659] [2024-06-28 03:41:29,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:29,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:29,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:29,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:29,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:29,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:29,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 230 transitions, 2066 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:29,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:29,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:29,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:30,025 INFO L124 PetriNetUnfolderBase]: 611/1159 cut-off events. [2024-06-28 03:41:30,026 INFO L125 PetriNetUnfolderBase]: For 144288/144288 co-relation queries the response was YES. [2024-06-28 03:41:30,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7035 conditions, 1159 events. 611/1159 cut-off events. For 144288/144288 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6333 event pairs, 92 based on Foata normal form. 8/1165 useless extension candidates. Maximal degree in co-relation 6910. Up to 673 conditions per place. [2024-06-28 03:41:30,035 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 104 changer transitions 17/254 dead transitions. [2024-06-28 03:41:30,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 254 transitions, 2646 flow [2024-06-28 03:41:30,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:30,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 03:41:30,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:41:30,036 INFO L175 Difference]: Start difference. First operand has 285 places, 230 transitions, 2066 flow. Second operand 12 states and 144 transitions. [2024-06-28 03:41:30,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 254 transitions, 2646 flow [2024-06-28 03:41:30,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 254 transitions, 2430 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:30,475 INFO L231 Difference]: Finished difference. Result has 282 places, 226 transitions, 2035 flow [2024-06-28 03:41:30,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2035, PETRI_PLACES=282, PETRI_TRANSITIONS=226} [2024-06-28 03:41:30,475 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-28 03:41:30,475 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 226 transitions, 2035 flow [2024-06-28 03:41:30,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:30,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:30,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:30,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:41:30,476 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)] === [2024-06-28 03:41:30,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:30,476 INFO L85 PathProgramCache]: Analyzing trace with hash -957557456, now seen corresponding path program 5 times [2024-06-28 03:41:30,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:30,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184737786] [2024-06-28 03:41:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:30,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:31,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:31,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184737786] [2024-06-28 03:41:31,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184737786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:31,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:31,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:31,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240298754] [2024-06-28 03:41:31,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:31,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:31,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:31,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:31,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:31,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:31,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 226 transitions, 2035 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:31,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:31,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:31,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:31,698 INFO L124 PetriNetUnfolderBase]: 604/1146 cut-off events. [2024-06-28 03:41:31,698 INFO L125 PetriNetUnfolderBase]: For 138310/138310 co-relation queries the response was YES. [2024-06-28 03:41:31,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6935 conditions, 1146 events. 604/1146 cut-off events. For 138310/138310 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6230 event pairs, 86 based on Foata normal form. 8/1152 useless extension candidates. Maximal degree in co-relation 6812. Up to 655 conditions per place. [2024-06-28 03:41:31,710 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 125 selfloop transitions, 100 changer transitions 24/251 dead transitions. [2024-06-28 03:41:31,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 251 transitions, 2613 flow [2024-06-28 03:41:31,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:31,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:41:31,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 03:41:31,711 INFO L175 Difference]: Start difference. First operand has 282 places, 226 transitions, 2035 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:41:31,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 251 transitions, 2613 flow [2024-06-28 03:41:31,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 251 transitions, 2399 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:31,992 INFO L231 Difference]: Finished difference. Result has 277 places, 220 transitions, 1980 flow [2024-06-28 03:41:31,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1980, PETRI_PLACES=277, PETRI_TRANSITIONS=220} [2024-06-28 03:41:31,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-28 03:41:31,993 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 220 transitions, 1980 flow [2024-06-28 03:41:31,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:31,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:31,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:31,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:41:31,994 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)] === [2024-06-28 03:41:31,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:31,994 INFO L85 PathProgramCache]: Analyzing trace with hash 896508510, now seen corresponding path program 6 times [2024-06-28 03:41:31,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:31,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115035275] [2024-06-28 03:41:31,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:31,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:32,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:32,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115035275] [2024-06-28 03:41:32,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115035275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:32,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:32,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:32,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548781498] [2024-06-28 03:41:32,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:32,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:32,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:32,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:32,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:33,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:33,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 220 transitions, 1980 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:33,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:33,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:33,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:33,386 INFO L124 PetriNetUnfolderBase]: 587/1113 cut-off events. [2024-06-28 03:41:33,386 INFO L125 PetriNetUnfolderBase]: For 140906/140906 co-relation queries the response was YES. [2024-06-28 03:41:33,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6774 conditions, 1113 events. 587/1113 cut-off events. For 140906/140906 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6010 event pairs, 88 based on Foata normal form. 10/1121 useless extension candidates. Maximal degree in co-relation 6652. Up to 836 conditions per place. [2024-06-28 03:41:33,396 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 171 selfloop transitions, 57 changer transitions 11/241 dead transitions. [2024-06-28 03:41:33,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 241 transitions, 2538 flow [2024-06-28 03:41:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:33,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 03:41:33,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:41:33,397 INFO L175 Difference]: Start difference. First operand has 277 places, 220 transitions, 1980 flow. Second operand 12 states and 141 transitions. [2024-06-28 03:41:33,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 241 transitions, 2538 flow [2024-06-28 03:41:33,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 241 transitions, 2306 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:41:33,695 INFO L231 Difference]: Finished difference. Result has 269 places, 217 transitions, 1843 flow [2024-06-28 03:41:33,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1843, PETRI_PLACES=269, PETRI_TRANSITIONS=217} [2024-06-28 03:41:33,696 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-28 03:41:33,696 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 217 transitions, 1843 flow [2024-06-28 03:41:33,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:33,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:33,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:33,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:41:33,696 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)] === [2024-06-28 03:41:33,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:33,697 INFO L85 PathProgramCache]: Analyzing trace with hash 896502930, now seen corresponding path program 7 times [2024-06-28 03:41:33,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:33,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40854221] [2024-06-28 03:41:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:34,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:34,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40854221] [2024-06-28 03:41:34,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40854221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:34,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:34,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:34,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525969482] [2024-06-28 03:41:34,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:34,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:34,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:34,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:34,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:34,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:34,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 217 transitions, 1843 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:34,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:34,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:34,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:35,214 INFO L124 PetriNetUnfolderBase]: 563/1069 cut-off events. [2024-06-28 03:41:35,214 INFO L125 PetriNetUnfolderBase]: For 129293/129293 co-relation queries the response was YES. [2024-06-28 03:41:35,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6437 conditions, 1069 events. 563/1069 cut-off events. For 129293/129293 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5733 event pairs, 80 based on Foata normal form. 8/1075 useless extension candidates. Maximal degree in co-relation 6320. Up to 802 conditions per place. [2024-06-28 03:41:35,222 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 170 selfloop transitions, 52 changer transitions 12/236 dead transitions. [2024-06-28 03:41:35,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 236 transitions, 2371 flow [2024-06-28 03:41:35,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:35,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:35,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 03:41:35,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 03:41:35,223 INFO L175 Difference]: Start difference. First operand has 269 places, 217 transitions, 1843 flow. Second operand 11 states and 131 transitions. [2024-06-28 03:41:35,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 236 transitions, 2371 flow [2024-06-28 03:41:35,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 236 transitions, 2254 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:35,522 INFO L231 Difference]: Finished difference. Result has 268 places, 213 transitions, 1789 flow [2024-06-28 03:41:35,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1789, PETRI_PLACES=268, PETRI_TRANSITIONS=213} [2024-06-28 03:41:35,523 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-28 03:41:35,523 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 213 transitions, 1789 flow [2024-06-28 03:41:35,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:35,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:35,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:35,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:41:35,524 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)] === [2024-06-28 03:41:35,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:35,524 INFO L85 PathProgramCache]: Analyzing trace with hash -425160904, now seen corresponding path program 8 times [2024-06-28 03:41:35,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:35,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368287012] [2024-06-28 03:41:35,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:35,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:36,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:36,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368287012] [2024-06-28 03:41:36,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368287012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:36,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:36,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:36,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900554945] [2024-06-28 03:41:36,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:36,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:36,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:36,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:36,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:36,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:36,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 213 transitions, 1789 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:36,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:36,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:36,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:37,247 INFO L124 PetriNetUnfolderBase]: 583/1113 cut-off events. [2024-06-28 03:41:37,247 INFO L125 PetriNetUnfolderBase]: For 172942/172942 co-relation queries the response was YES. [2024-06-28 03:41:37,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7477 conditions, 1113 events. 583/1113 cut-off events. For 172942/172942 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6022 event pairs, 85 based on Foata normal form. 8/1119 useless extension candidates. Maximal degree in co-relation 7360. Up to 745 conditions per place. [2024-06-28 03:41:37,257 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 167 selfloop transitions, 59 changer transitions 11/239 dead transitions. [2024-06-28 03:41:37,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 239 transitions, 2545 flow [2024-06-28 03:41:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:37,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:37,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 03:41:37,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-28 03:41:37,258 INFO L175 Difference]: Start difference. First operand has 268 places, 213 transitions, 1789 flow. Second operand 12 states and 149 transitions. [2024-06-28 03:41:37,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 239 transitions, 2545 flow [2024-06-28 03:41:37,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 239 transitions, 2377 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 03:41:37,653 INFO L231 Difference]: Finished difference. Result has 264 places, 210 transitions, 1720 flow [2024-06-28 03:41:37,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1720, PETRI_PLACES=264, PETRI_TRANSITIONS=210} [2024-06-28 03:41:37,653 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-28 03:41:37,653 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 210 transitions, 1720 flow [2024-06-28 03:41:37,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:37,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:37,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:37,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:41:37,654 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)] === [2024-06-28 03:41:37,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:37,654 INFO L85 PathProgramCache]: Analyzing trace with hash -661865446, now seen corresponding path program 9 times [2024-06-28 03:41:37,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:37,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670761354] [2024-06-28 03:41:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:37,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:38,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:38,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670761354] [2024-06-28 03:41:38,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670761354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:38,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:38,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:38,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751054843] [2024-06-28 03:41:38,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:38,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:38,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:38,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:38,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:38,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:38,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 210 transitions, 1720 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:38,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:38,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:38,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:39,137 INFO L124 PetriNetUnfolderBase]: 570/1090 cut-off events. [2024-06-28 03:41:39,137 INFO L125 PetriNetUnfolderBase]: For 172810/172810 co-relation queries the response was YES. [2024-06-28 03:41:39,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7086 conditions, 1090 events. 570/1090 cut-off events. For 172810/172810 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5865 event pairs, 96 based on Foata normal form. 10/1098 useless extension candidates. Maximal degree in co-relation 6971. Up to 801 conditions per place. [2024-06-28 03:41:39,146 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 158 selfloop transitions, 57 changer transitions 12/229 dead transitions. [2024-06-28 03:41:39,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 229 transitions, 2244 flow [2024-06-28 03:41:39,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:41:39,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 03:41:39,147 INFO L175 Difference]: Start difference. First operand has 264 places, 210 transitions, 1720 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:41:39,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 229 transitions, 2244 flow [2024-06-28 03:41:39,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 229 transitions, 2123 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:39,504 INFO L231 Difference]: Finished difference. Result has 260 places, 207 transitions, 1695 flow [2024-06-28 03:41:39,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1599, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1695, PETRI_PLACES=260, PETRI_TRANSITIONS=207} [2024-06-28 03:41:39,504 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-28 03:41:39,504 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 207 transitions, 1695 flow [2024-06-28 03:41:39,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:39,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:39,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:39,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:41:39,505 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)] === [2024-06-28 03:41:39,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:39,506 INFO L85 PathProgramCache]: Analyzing trace with hash -661871026, now seen corresponding path program 10 times [2024-06-28 03:41:39,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:39,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291424875] [2024-06-28 03:41:39,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:39,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:40,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:40,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:40,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291424875] [2024-06-28 03:41:40,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291424875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:40,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:40,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:40,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877777879] [2024-06-28 03:41:40,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:40,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:40,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:40,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:40,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:40,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:40,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 207 transitions, 1695 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:40,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:40,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:40,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:41,091 INFO L124 PetriNetUnfolderBase]: 536/1024 cut-off events. [2024-06-28 03:41:41,091 INFO L125 PetriNetUnfolderBase]: For 132010/132010 co-relation queries the response was YES. [2024-06-28 03:41:41,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6130 conditions, 1024 events. 536/1024 cut-off events. For 132010/132010 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5447 event pairs, 78 based on Foata normal form. 8/1030 useless extension candidates. Maximal degree in co-relation 6017. Up to 754 conditions per place. [2024-06-28 03:41:41,100 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 161 selfloop transitions, 50 changer transitions 14/227 dead transitions. [2024-06-28 03:41:41,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 227 transitions, 2207 flow [2024-06-28 03:41:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 03:41:41,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:41:41,101 INFO L175 Difference]: Start difference. First operand has 260 places, 207 transitions, 1695 flow. Second operand 12 states and 138 transitions. [2024-06-28 03:41:41,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 227 transitions, 2207 flow [2024-06-28 03:41:41,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 227 transitions, 2089 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:41,386 INFO L231 Difference]: Finished difference. Result has 259 places, 202 transitions, 1637 flow [2024-06-28 03:41:41,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1637, PETRI_PLACES=259, PETRI_TRANSITIONS=202} [2024-06-28 03:41:41,386 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-28 03:41:41,386 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 202 transitions, 1637 flow [2024-06-28 03:41:41,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:41,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:41,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:41,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:41:41,386 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)] === [2024-06-28 03:41:41,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:41,387 INFO L85 PathProgramCache]: Analyzing trace with hash -804118246, now seen corresponding path program 11 times [2024-06-28 03:41:41,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:41,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447064583] [2024-06-28 03:41:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:41,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:42,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:42,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447064583] [2024-06-28 03:41:42,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447064583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:42,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:42,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:42,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963865683] [2024-06-28 03:41:42,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:42,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:42,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:42,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:42,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:42,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:42,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 202 transitions, 1637 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:42,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:42,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:42,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:42,951 INFO L124 PetriNetUnfolderBase]: 555/1065 cut-off events. [2024-06-28 03:41:42,951 INFO L125 PetriNetUnfolderBase]: For 169149/169149 co-relation queries the response was YES. [2024-06-28 03:41:42,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7105 conditions, 1065 events. 555/1065 cut-off events. For 169149/169149 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5705 event pairs, 93 based on Foata normal form. 8/1071 useless extension candidates. Maximal degree in co-relation 6993. Up to 677 conditions per place. [2024-06-28 03:41:42,960 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 162 selfloop transitions, 50 changer transitions 14/228 dead transitions. [2024-06-28 03:41:42,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 228 transitions, 2367 flow [2024-06-28 03:41:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:41:42,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-28 03:41:42,961 INFO L175 Difference]: Start difference. First operand has 259 places, 202 transitions, 1637 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:41:42,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 228 transitions, 2367 flow [2024-06-28 03:41:43,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 228 transitions, 2261 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:43,329 INFO L231 Difference]: Finished difference. Result has 253 places, 198 transitions, 1613 flow [2024-06-28 03:41:43,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1613, PETRI_PLACES=253, PETRI_TRANSITIONS=198} [2024-06-28 03:41:43,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-28 03:41:43,330 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 198 transitions, 1613 flow [2024-06-28 03:41:43,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:43,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:43,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:43,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:41:43,330 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)] === [2024-06-28 03:41:43,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:43,331 INFO L85 PathProgramCache]: Analyzing trace with hash -800543326, now seen corresponding path program 12 times [2024-06-28 03:41:43,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:43,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557405777] [2024-06-28 03:41:43,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:43,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:44,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:44,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557405777] [2024-06-28 03:41:44,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557405777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:44,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:44,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:44,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272973158] [2024-06-28 03:41:44,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:44,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:44,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:44,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:44,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:44,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:44,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 198 transitions, 1613 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:44,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:44,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:44,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:44,697 INFO L124 PetriNetUnfolderBase]: 541/1039 cut-off events. [2024-06-28 03:41:44,697 INFO L125 PetriNetUnfolderBase]: For 169003/169003 co-relation queries the response was YES. [2024-06-28 03:41:44,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7018 conditions, 1039 events. 541/1039 cut-off events. For 169003/169003 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5513 event pairs, 81 based on Foata normal form. 8/1045 useless extension candidates. Maximal degree in co-relation 6907. Up to 668 conditions per place. [2024-06-28 03:41:44,706 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 55 changer transitions 11/223 dead transitions. [2024-06-28 03:41:44,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 223 transitions, 2331 flow [2024-06-28 03:41:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:41:44,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-28 03:41:44,707 INFO L175 Difference]: Start difference. First operand has 253 places, 198 transitions, 1613 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:41:44,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 223 transitions, 2331 flow [2024-06-28 03:41:45,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 223 transitions, 2215 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:45,042 INFO L231 Difference]: Finished difference. Result has 247 places, 195 transitions, 1600 flow [2024-06-28 03:41:45,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1600, PETRI_PLACES=247, PETRI_TRANSITIONS=195} [2024-06-28 03:41:45,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-28 03:41:45,042 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 195 transitions, 1600 flow [2024-06-28 03:41:45,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:45,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:45,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:45,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:41:45,042 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)] === [2024-06-28 03:41:45,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:45,043 INFO L85 PathProgramCache]: Analyzing trace with hash -800393596, now seen corresponding path program 13 times [2024-06-28 03:41:45,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:45,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441267854] [2024-06-28 03:41:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:45,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:45,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:45,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441267854] [2024-06-28 03:41:45,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441267854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:45,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:45,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:45,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404611951] [2024-06-28 03:41:45,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:45,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:45,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:45,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:45,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:46,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:46,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 195 transitions, 1600 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:46,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:46,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:46,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:46,382 INFO L124 PetriNetUnfolderBase]: 528/1016 cut-off events. [2024-06-28 03:41:46,382 INFO L125 PetriNetUnfolderBase]: For 157938/157938 co-relation queries the response was YES. [2024-06-28 03:41:46,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6675 conditions, 1016 events. 528/1016 cut-off events. For 157938/157938 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5367 event pairs, 90 based on Foata normal form. 10/1024 useless extension candidates. Maximal degree in co-relation 6567. Up to 724 conditions per place. [2024-06-28 03:41:46,389 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 146 selfloop transitions, 54 changer transitions 12/214 dead transitions. [2024-06-28 03:41:46,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 214 transitions, 2094 flow [2024-06-28 03:41:46,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:46,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:46,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:41:46,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:41:46,390 INFO L175 Difference]: Start difference. First operand has 247 places, 195 transitions, 1600 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:41:46,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 214 transitions, 2094 flow [2024-06-28 03:41:46,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 214 transitions, 1981 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:46,687 INFO L231 Difference]: Finished difference. Result has 244 places, 192 transitions, 1577 flow [2024-06-28 03:41:46,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1577, PETRI_PLACES=244, PETRI_TRANSITIONS=192} [2024-06-28 03:41:46,687 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-28 03:41:46,687 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 192 transitions, 1577 flow [2024-06-28 03:41:46,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:46,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:46,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:46,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:41:46,688 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)] === [2024-06-28 03:41:46,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash -800399176, now seen corresponding path program 14 times [2024-06-28 03:41:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:46,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417645354] [2024-06-28 03:41:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:46,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:48,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:48,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417645354] [2024-06-28 03:41:48,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417645354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:48,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:48,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:48,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183136655] [2024-06-28 03:41:48,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:48,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:48,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:48,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:48,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:48,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:48,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 192 transitions, 1577 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:48,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:48,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:48,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:48,605 INFO L124 PetriNetUnfolderBase]: 527/1025 cut-off events. [2024-06-28 03:41:48,605 INFO L125 PetriNetUnfolderBase]: For 143654/143654 co-relation queries the response was YES. [2024-06-28 03:41:48,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6619 conditions, 1025 events. 527/1025 cut-off events. For 143654/143654 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5491 event pairs, 119 based on Foata normal form. 8/1031 useless extension candidates. Maximal degree in co-relation 6513. Up to 821 conditions per place. [2024-06-28 03:41:48,613 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 167 selfloop transitions, 34 changer transitions 16/219 dead transitions. [2024-06-28 03:41:48,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 219 transitions, 2116 flow [2024-06-28 03:41:48,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:41:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:41:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 153 transitions. [2024-06-28 03:41:48,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35253456221198154 [2024-06-28 03:41:48,614 INFO L175 Difference]: Start difference. First operand has 244 places, 192 transitions, 1577 flow. Second operand 14 states and 153 transitions. [2024-06-28 03:41:48,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 219 transitions, 2116 flow [2024-06-28 03:41:48,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 219 transitions, 1998 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:48,905 INFO L231 Difference]: Finished difference. Result has 249 places, 191 transitions, 1537 flow [2024-06-28 03:41:48,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1537, PETRI_PLACES=249, PETRI_TRANSITIONS=191} [2024-06-28 03:41:48,905 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-28 03:41:48,905 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 191 transitions, 1537 flow [2024-06-28 03:41:48,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:48,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:48,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:48,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:41:48,905 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)] === [2024-06-28 03:41:48,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash -585698000, now seen corresponding path program 15 times [2024-06-28 03:41:48,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:48,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530820398] [2024-06-28 03:41:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:48,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:49,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:49,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:49,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530820398] [2024-06-28 03:41:49,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530820398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:49,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:49,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:49,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560773222] [2024-06-28 03:41:49,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:49,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:49,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:49,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:49,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:49,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:49,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 191 transitions, 1537 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:49,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:49,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:49,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:50,203 INFO L124 PetriNetUnfolderBase]: 533/1030 cut-off events. [2024-06-28 03:41:50,203 INFO L125 PetriNetUnfolderBase]: For 167658/167660 co-relation queries the response was YES. [2024-06-28 03:41:50,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7213 conditions, 1030 events. 533/1030 cut-off events. For 167658/167660 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5453 event pairs, 103 based on Foata normal form. 10/1038 useless extension candidates. Maximal degree in co-relation 7104. Up to 332 conditions per place. [2024-06-28 03:41:50,212 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 116 selfloop transitions, 89 changer transitions 15/222 dead transitions. [2024-06-28 03:41:50,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 222 transitions, 2266 flow [2024-06-28 03:41:50,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:50,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 03:41:50,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-28 03:41:50,213 INFO L175 Difference]: Start difference. First operand has 249 places, 191 transitions, 1537 flow. Second operand 11 states and 146 transitions. [2024-06-28 03:41:50,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 222 transitions, 2266 flow [2024-06-28 03:41:50,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 222 transitions, 2198 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:50,582 INFO L231 Difference]: Finished difference. Result has 245 places, 187 transitions, 1629 flow [2024-06-28 03:41:50,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1629, PETRI_PLACES=245, PETRI_TRANSITIONS=187} [2024-06-28 03:41:50,582 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-28 03:41:50,582 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 187 transitions, 1629 flow [2024-06-28 03:41:50,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:50,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:50,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:50,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:41:50,582 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)] === [2024-06-28 03:41:50,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash -582123080, now seen corresponding path program 16 times [2024-06-28 03:41:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:50,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300829206] [2024-06-28 03:41:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:50,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:51,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:51,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300829206] [2024-06-28 03:41:51,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300829206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:51,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:51,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:51,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194695510] [2024-06-28 03:41:51,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:51,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:51,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:51,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:51,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:51,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:51,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 187 transitions, 1629 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:51,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:51,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:51,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:52,044 INFO L124 PetriNetUnfolderBase]: 544/1053 cut-off events. [2024-06-28 03:41:52,044 INFO L125 PetriNetUnfolderBase]: For 202858/202860 co-relation queries the response was YES. [2024-06-28 03:41:52,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8265 conditions, 1053 events. 544/1053 cut-off events. For 202858/202860 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5622 event pairs, 116 based on Foata normal form. 10/1061 useless extension candidates. Maximal degree in co-relation 8159. Up to 551 conditions per place. [2024-06-28 03:41:52,053 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 111 selfloop transitions, 90 changer transitions 14/217 dead transitions. [2024-06-28 03:41:52,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 217 transitions, 2340 flow [2024-06-28 03:41:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-28 03:41:52,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:41:52,054 INFO L175 Difference]: Start difference. First operand has 245 places, 187 transitions, 1629 flow. Second operand 12 states and 155 transitions. [2024-06-28 03:41:52,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 217 transitions, 2340 flow [2024-06-28 03:41:52,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 217 transitions, 2188 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:52,398 INFO L231 Difference]: Finished difference. Result has 241 places, 181 transitions, 1631 flow [2024-06-28 03:41:52,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1631, PETRI_PLACES=241, PETRI_TRANSITIONS=181} [2024-06-28 03:41:52,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-28 03:41:52,398 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 181 transitions, 1631 flow [2024-06-28 03:41:52,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:52,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:52,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:52,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:41:52,399 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)] === [2024-06-28 03:41:52,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:52,399 INFO L85 PathProgramCache]: Analyzing trace with hash -581978930, now seen corresponding path program 17 times [2024-06-28 03:41:52,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:52,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292544815] [2024-06-28 03:41:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:52,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:53,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:53,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292544815] [2024-06-28 03:41:53,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292544815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:53,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:53,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:53,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071487261] [2024-06-28 03:41:53,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:53,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:53,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:53,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:53,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:53,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:53,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 181 transitions, 1631 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:53,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:53,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:53,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:53,795 INFO L124 PetriNetUnfolderBase]: 524/1017 cut-off events. [2024-06-28 03:41:53,795 INFO L125 PetriNetUnfolderBase]: For 188616/188618 co-relation queries the response was YES. [2024-06-28 03:41:53,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8106 conditions, 1017 events. 524/1017 cut-off events. For 188616/188618 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5368 event pairs, 110 based on Foata normal form. 10/1025 useless extension candidates. Maximal degree in co-relation 8003. Up to 551 conditions per place. [2024-06-28 03:41:53,803 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 107 selfloop transitions, 91 changer transitions 11/211 dead transitions. [2024-06-28 03:41:53,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 211 transitions, 2324 flow [2024-06-28 03:41:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:41:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:41:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-28 03:41:53,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3970223325062035 [2024-06-28 03:41:53,805 INFO L175 Difference]: Start difference. First operand has 241 places, 181 transitions, 1631 flow. Second operand 13 states and 160 transitions. [2024-06-28 03:41:53,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 211 transitions, 2324 flow [2024-06-28 03:41:54,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 211 transitions, 2133 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-28 03:41:54,123 INFO L231 Difference]: Finished difference. Result has 235 places, 176 transitions, 1596 flow [2024-06-28 03:41:54,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1596, PETRI_PLACES=235, PETRI_TRANSITIONS=176} [2024-06-28 03:41:54,124 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-28 03:41:54,124 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 176 transitions, 1596 flow [2024-06-28 03:41:54,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:54,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:54,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:54,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:41:54,125 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)] === [2024-06-28 03:41:54,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2134984926, now seen corresponding path program 18 times [2024-06-28 03:41:54,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:54,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92177458] [2024-06-28 03:41:54,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:54,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:54,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:54,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92177458] [2024-06-28 03:41:54,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92177458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:54,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:54,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:54,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342997895] [2024-06-28 03:41:54,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:54,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:54,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:54,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:54,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:55,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:55,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 176 transitions, 1596 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:55,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:55,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:55,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:55,411 INFO L124 PetriNetUnfolderBase]: 514/1003 cut-off events. [2024-06-28 03:41:55,412 INFO L125 PetriNetUnfolderBase]: For 176299/176301 co-relation queries the response was YES. [2024-06-28 03:41:55,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7872 conditions, 1003 events. 514/1003 cut-off events. For 176299/176301 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5346 event pairs, 102 based on Foata normal form. 12/1013 useless extension candidates. Maximal degree in co-relation 7773. Up to 589 conditions per place. [2024-06-28 03:41:55,420 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 89 selfloop transitions, 90 changer transitions 18/199 dead transitions. [2024-06-28 03:41:55,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 199 transitions, 2075 flow [2024-06-28 03:41:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:55,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 03:41:55,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 03:41:55,421 INFO L175 Difference]: Start difference. First operand has 235 places, 176 transitions, 1596 flow. Second operand 11 states and 139 transitions. [2024-06-28 03:41:55,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 199 transitions, 2075 flow [2024-06-28 03:41:55,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 199 transitions, 1893 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 03:41:55,673 INFO L231 Difference]: Finished difference. Result has 230 places, 169 transitions, 1543 flow [2024-06-28 03:41:55,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1543, PETRI_PLACES=230, PETRI_TRANSITIONS=169} [2024-06-28 03:41:55,673 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-28 03:41:55,673 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 169 transitions, 1543 flow [2024-06-28 03:41:55,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:55,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:55,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:55,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:41:55,674 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)] === [2024-06-28 03:41:55,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:55,674 INFO L85 PathProgramCache]: Analyzing trace with hash -938875102, now seen corresponding path program 19 times [2024-06-28 03:41:55,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793264018] [2024-06-28 03:41:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:55,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:56,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:56,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793264018] [2024-06-28 03:41:56,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793264018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:56,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:56,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:56,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172224110] [2024-06-28 03:41:56,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:56,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:56,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:56,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:56,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:56,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:56,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 169 transitions, 1543 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:56,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:56,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:56,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:57,008 INFO L124 PetriNetUnfolderBase]: 496/973 cut-off events. [2024-06-28 03:41:57,008 INFO L125 PetriNetUnfolderBase]: For 167271/167271 co-relation queries the response was YES. [2024-06-28 03:41:57,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7638 conditions, 973 events. 496/973 cut-off events. For 167271/167271 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5159 event pairs, 114 based on Foata normal form. 10/981 useless extension candidates. Maximal degree in co-relation 7541. Up to 699 conditions per place. [2024-06-28 03:41:57,016 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 55 changer transitions 12/187 dead transitions. [2024-06-28 03:41:57,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 187 transitions, 1979 flow [2024-06-28 03:41:57,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 03:41:57,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 03:41:57,017 INFO L175 Difference]: Start difference. First operand has 230 places, 169 transitions, 1543 flow. Second operand 11 states and 131 transitions. [2024-06-28 03:41:57,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 187 transitions, 1979 flow [2024-06-28 03:41:57,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 187 transitions, 1789 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:57,264 INFO L231 Difference]: Finished difference. Result has 224 places, 165 transitions, 1441 flow [2024-06-28 03:41:57,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1441, PETRI_PLACES=224, PETRI_TRANSITIONS=165} [2024-06-28 03:41:57,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-28 03:41:57,265 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 165 transitions, 1441 flow [2024-06-28 03:41:57,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:57,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:57,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:57,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:41:57,266 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)] === [2024-06-28 03:41:57,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:57,266 INFO L85 PathProgramCache]: Analyzing trace with hash 614130894, now seen corresponding path program 20 times [2024-06-28 03:41:57,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:57,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195141623] [2024-06-28 03:41:57,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:57,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:58,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:58,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195141623] [2024-06-28 03:41:58,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195141623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:58,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:58,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:58,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726326101] [2024-06-28 03:41:58,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:58,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:58,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:58,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:58,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:58,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:58,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 165 transitions, 1441 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:58,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:58,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:58,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:58,667 INFO L124 PetriNetUnfolderBase]: 486/959 cut-off events. [2024-06-28 03:41:58,667 INFO L125 PetriNetUnfolderBase]: For 153064/153064 co-relation queries the response was YES. [2024-06-28 03:41:58,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7338 conditions, 959 events. 486/959 cut-off events. For 153064/153064 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5082 event pairs, 150 based on Foata normal form. 8/965 useless extension candidates. Maximal degree in co-relation 7243. Up to 788 conditions per place. [2024-06-28 03:41:58,674 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 136 selfloop transitions, 32 changer transitions 15/185 dead transitions. [2024-06-28 03:41:58,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 185 transitions, 1875 flow [2024-06-28 03:41:58,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:58,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 03:41:58,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 03:41:58,675 INFO L175 Difference]: Start difference. First operand has 224 places, 165 transitions, 1441 flow. Second operand 12 states and 135 transitions. [2024-06-28 03:41:58,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 185 transitions, 1875 flow [2024-06-28 03:41:58,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 185 transitions, 1761 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:58,906 INFO L231 Difference]: Finished difference. Result has 224 places, 161 transitions, 1356 flow [2024-06-28 03:41:58,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1356, PETRI_PLACES=224, PETRI_TRANSITIONS=161} [2024-06-28 03:41:58,906 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-28 03:41:58,906 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 161 transitions, 1356 flow [2024-06-28 03:41:58,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:58,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:58,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:58,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:41:58,907 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)] === [2024-06-28 03:41:58,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:58,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1991094396, now seen corresponding path program 21 times [2024-06-28 03:41:58,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:58,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025083259] [2024-06-28 03:41:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:58,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:59,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:59,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025083259] [2024-06-28 03:41:59,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025083259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:59,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:59,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:59,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786726410] [2024-06-28 03:41:59,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:59,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:59,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:59,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:59,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:59,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:41:59,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 161 transitions, 1356 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:59,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:59,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:41:59,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:00,241 INFO L124 PetriNetUnfolderBase]: 480/948 cut-off events. [2024-06-28 03:42:00,241 INFO L125 PetriNetUnfolderBase]: For 154017/154019 co-relation queries the response was YES. [2024-06-28 03:42:00,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7192 conditions, 948 events. 480/948 cut-off events. For 154017/154019 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5028 event pairs, 114 based on Foata normal form. 12/958 useless extension candidates. Maximal degree in co-relation 7097. Up to 683 conditions per place. [2024-06-28 03:42:00,249 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 111 selfloop transitions, 52 changer transitions 17/182 dead transitions. [2024-06-28 03:42:00,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 182 transitions, 1791 flow [2024-06-28 03:42:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:00,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:00,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:42:00,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 03:42:00,250 INFO L175 Difference]: Start difference. First operand has 224 places, 161 transitions, 1356 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:42:00,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 182 transitions, 1791 flow [2024-06-28 03:42:00,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 182 transitions, 1721 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:00,483 INFO L231 Difference]: Finished difference. Result has 219 places, 154 transitions, 1334 flow [2024-06-28 03:42:00,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1334, PETRI_PLACES=219, PETRI_TRANSITIONS=154} [2024-06-28 03:42:00,484 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-28 03:42:00,484 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 154 transitions, 1334 flow [2024-06-28 03:42:00,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:00,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:00,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:00,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:42:00,484 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)] === [2024-06-28 03:42:00,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:00,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1996456776, now seen corresponding path program 22 times [2024-06-28 03:42:00,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:00,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634642292] [2024-06-28 03:42:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:00,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:01,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:01,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:01,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634642292] [2024-06-28 03:42:01,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634642292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:01,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:01,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:01,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352684839] [2024-06-28 03:42:01,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:01,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:01,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:01,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:01,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:01,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:01,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 154 transitions, 1334 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:01,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:01,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:01,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:01,948 INFO L124 PetriNetUnfolderBase]: 438/866 cut-off events. [2024-06-28 03:42:01,948 INFO L125 PetriNetUnfolderBase]: For 124923/124925 co-relation queries the response was YES. [2024-06-28 03:42:01,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6189 conditions, 866 events. 438/866 cut-off events. For 124923/124925 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4457 event pairs, 93 based on Foata normal form. 12/876 useless extension candidates. Maximal degree in co-relation 6096. Up to 604 conditions per place. [2024-06-28 03:42:01,954 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 106 selfloop transitions, 46 changer transitions 22/176 dead transitions. [2024-06-28 03:42:01,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 176 transitions, 1759 flow [2024-06-28 03:42:01,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:01,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 03:42:01,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:42:01,955 INFO L175 Difference]: Start difference. First operand has 219 places, 154 transitions, 1334 flow. Second operand 12 states and 141 transitions. [2024-06-28 03:42:01,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 176 transitions, 1759 flow [2024-06-28 03:42:02,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 176 transitions, 1649 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:02,194 INFO L231 Difference]: Finished difference. Result has 215 places, 143 transitions, 1230 flow [2024-06-28 03:42:02,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1230, PETRI_PLACES=215, PETRI_TRANSITIONS=143} [2024-06-28 03:42:02,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-28 03:42:02,194 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 143 transitions, 1230 flow [2024-06-28 03:42:02,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:02,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:02,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:02,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:42:02,195 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)] === [2024-06-28 03:42:02,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:02,195 INFO L85 PathProgramCache]: Analyzing trace with hash 621764830, now seen corresponding path program 1 times [2024-06-28 03:42:02,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:02,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221399422] [2024-06-28 03:42:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:02,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:03,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:03,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221399422] [2024-06-28 03:42:03,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221399422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:03,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:03,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:03,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525063838] [2024-06-28 03:42:03,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:03,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:03,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:03,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:03,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:03,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:03,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 143 transitions, 1230 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:03,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:03,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:03,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:03,464 INFO L124 PetriNetUnfolderBase]: 416/825 cut-off events. [2024-06-28 03:42:03,464 INFO L125 PetriNetUnfolderBase]: For 113136/113136 co-relation queries the response was YES. [2024-06-28 03:42:03,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 825 events. 416/825 cut-off events. For 113136/113136 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4195 event pairs, 96 based on Foata normal form. 8/831 useless extension candidates. Maximal degree in co-relation 5813. Up to 593 conditions per place. [2024-06-28 03:42:03,469 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 107 selfloop transitions, 30 changer transitions 20/159 dead transitions. [2024-06-28 03:42:03,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 159 transitions, 1594 flow [2024-06-28 03:42:03,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:03,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:03,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 03:42:03,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 03:42:03,470 INFO L175 Difference]: Start difference. First operand has 215 places, 143 transitions, 1230 flow. Second operand 10 states and 117 transitions. [2024-06-28 03:42:03,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 159 transitions, 1594 flow [2024-06-28 03:42:03,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 159 transitions, 1458 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 03:42:03,640 INFO L231 Difference]: Finished difference. Result has 200 places, 132 transitions, 1066 flow [2024-06-28 03:42:03,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1066, PETRI_PLACES=200, PETRI_TRANSITIONS=132} [2024-06-28 03:42:03,641 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-28 03:42:03,641 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 132 transitions, 1066 flow [2024-06-28 03:42:03,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:03,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:03,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:03,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:42:03,641 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)] === [2024-06-28 03:42:03,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:03,641 INFO L85 PathProgramCache]: Analyzing trace with hash 414684954, now seen corresponding path program 23 times [2024-06-28 03:42:03,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:03,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038772189] [2024-06-28 03:42:03,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:03,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:04,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:04,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038772189] [2024-06-28 03:42:04,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038772189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:04,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:04,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:04,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805703315] [2024-06-28 03:42:04,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:04,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:04,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:04,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:04,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:04,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:04,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 132 transitions, 1066 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:04,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:04,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:04,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:05,024 INFO L124 PetriNetUnfolderBase]: 415/818 cut-off events. [2024-06-28 03:42:05,024 INFO L125 PetriNetUnfolderBase]: For 121177/121177 co-relation queries the response was YES. [2024-06-28 03:42:05,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6261 conditions, 818 events. 415/818 cut-off events. For 121177/121177 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4120 event pairs, 113 based on Foata normal form. 8/824 useless extension candidates. Maximal degree in co-relation 6185. Up to 500 conditions per place. [2024-06-28 03:42:05,030 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 104 selfloop transitions, 39 changer transitions 10/155 dead transitions. [2024-06-28 03:42:05,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 155 transitions, 1588 flow [2024-06-28 03:42:05,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:05,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:05,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:42:05,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 03:42:05,031 INFO L175 Difference]: Start difference. First operand has 200 places, 132 transitions, 1066 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:42:05,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 155 transitions, 1588 flow [2024-06-28 03:42:05,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 155 transitions, 1453 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-28 03:42:05,186 INFO L231 Difference]: Finished difference. Result has 186 places, 129 transitions, 1003 flow [2024-06-28 03:42:05,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1003, PETRI_PLACES=186, PETRI_TRANSITIONS=129} [2024-06-28 03:42:05,186 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-28 03:42:05,186 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 129 transitions, 1003 flow [2024-06-28 03:42:05,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:05,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:05,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:05,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:42:05,187 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)] === [2024-06-28 03:42:05,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:05,187 INFO L85 PathProgramCache]: Analyzing trace with hash 420191484, now seen corresponding path program 24 times [2024-06-28 03:42:05,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:05,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749271257] [2024-06-28 03:42:05,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:05,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:06,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:06,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749271257] [2024-06-28 03:42:06,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749271257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:06,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:06,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:06,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802272372] [2024-06-28 03:42:06,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:06,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:06,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:06,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:06,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:06,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:06,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 129 transitions, 1003 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:06,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:06,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:06,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:06,579 INFO L124 PetriNetUnfolderBase]: 444/877 cut-off events. [2024-06-28 03:42:06,580 INFO L125 PetriNetUnfolderBase]: For 129228/129228 co-relation queries the response was YES. [2024-06-28 03:42:06,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 877 events. 444/877 cut-off events. For 129228/129228 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4529 event pairs, 154 based on Foata normal form. 8/883 useless extension candidates. Maximal degree in co-relation 6797. Up to 669 conditions per place. [2024-06-28 03:42:06,585 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 118 selfloop transitions, 28 changer transitions 8/156 dead transitions. [2024-06-28 03:42:06,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 156 transitions, 1552 flow [2024-06-28 03:42:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:06,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 03:42:06,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:42:06,586 INFO L175 Difference]: Start difference. First operand has 186 places, 129 transitions, 1003 flow. Second operand 12 states and 138 transitions. [2024-06-28 03:42:06,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 156 transitions, 1552 flow [2024-06-28 03:42:06,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 156 transitions, 1468 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:06,723 INFO L231 Difference]: Finished difference. Result has 186 places, 130 transitions, 998 flow [2024-06-28 03:42:06,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=998, PETRI_PLACES=186, PETRI_TRANSITIONS=130} [2024-06-28 03:42:06,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-28 03:42:06,723 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 130 transitions, 998 flow [2024-06-28 03:42:06,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:06,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:06,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:06,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:42:06,724 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)] === [2024-06-28 03:42:06,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:06,725 INFO L85 PathProgramCache]: Analyzing trace with hash 414829104, now seen corresponding path program 25 times [2024-06-28 03:42:06,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:06,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891137981] [2024-06-28 03:42:06,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:06,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:07,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:07,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891137981] [2024-06-28 03:42:07,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891137981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:07,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:07,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:07,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441432193] [2024-06-28 03:42:07,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:07,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:07,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:07,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:07,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:07,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:07,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 130 transitions, 998 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:07,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:07,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:07,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:08,035 INFO L124 PetriNetUnfolderBase]: 460/913 cut-off events. [2024-06-28 03:42:08,035 INFO L125 PetriNetUnfolderBase]: For 135149/135149 co-relation queries the response was YES. [2024-06-28 03:42:08,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7328 conditions, 913 events. 460/913 cut-off events. For 135149/135149 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4757 event pairs, 138 based on Foata normal form. 8/919 useless extension candidates. Maximal degree in co-relation 7256. Up to 556 conditions per place. [2024-06-28 03:42:08,040 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 41 changer transitions 9/153 dead transitions. [2024-06-28 03:42:08,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 153 transitions, 1506 flow [2024-06-28 03:42:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:08,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:08,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 03:42:08,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-28 03:42:08,041 INFO L175 Difference]: Start difference. First operand has 186 places, 130 transitions, 998 flow. Second operand 12 states and 139 transitions. [2024-06-28 03:42:08,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 153 transitions, 1506 flow [2024-06-28 03:42:08,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 153 transitions, 1447 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:08,214 INFO L231 Difference]: Finished difference. Result has 187 places, 126 transitions, 991 flow [2024-06-28 03:42:08,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=991, PETRI_PLACES=187, PETRI_TRANSITIONS=126} [2024-06-28 03:42:08,215 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-28 03:42:08,215 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 126 transitions, 991 flow [2024-06-28 03:42:08,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:08,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:08,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:08,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:42:08,215 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)] === [2024-06-28 03:42:08,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1132814512, now seen corresponding path program 26 times [2024-06-28 03:42:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:08,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093561929] [2024-06-28 03:42:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:08,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:09,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:09,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093561929] [2024-06-28 03:42:09,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093561929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:09,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:09,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:09,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150971758] [2024-06-28 03:42:09,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:09,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:09,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:09,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:09,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:09,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:09,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 126 transitions, 991 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:09,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:09,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:09,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:09,456 INFO L124 PetriNetUnfolderBase]: 439/878 cut-off events. [2024-06-28 03:42:09,456 INFO L125 PetriNetUnfolderBase]: For 138781/138781 co-relation queries the response was YES. [2024-06-28 03:42:09,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6642 conditions, 878 events. 439/878 cut-off events. For 138781/138781 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4575 event pairs, 133 based on Foata normal form. 20/896 useless extension candidates. Maximal degree in co-relation 6571. Up to 613 conditions per place. [2024-06-28 03:42:09,461 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 35 changer transitions 20/143 dead transitions. [2024-06-28 03:42:09,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 143 transitions, 1333 flow [2024-06-28 03:42:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:09,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:42:09,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:42:09,462 INFO L175 Difference]: Start difference. First operand has 187 places, 126 transitions, 991 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:42:09,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 143 transitions, 1333 flow [2024-06-28 03:42:09,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 143 transitions, 1253 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:09,593 INFO L231 Difference]: Finished difference. Result has 184 places, 116 transitions, 894 flow [2024-06-28 03:42:09,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=894, PETRI_PLACES=184, PETRI_TRANSITIONS=116} [2024-06-28 03:42:09,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-28 03:42:09,593 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 116 transitions, 894 flow [2024-06-28 03:42:09,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:09,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:09,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:09,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:42:09,594 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)] === [2024-06-28 03:42:09,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:09,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1138176892, now seen corresponding path program 27 times [2024-06-28 03:42:09,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:09,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564383364] [2024-06-28 03:42:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:09,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:10,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:10,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564383364] [2024-06-28 03:42:10,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564383364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:10,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:10,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:10,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98086318] [2024-06-28 03:42:10,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:10,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:10,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:10,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:10,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:10,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 116 transitions, 894 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:10,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:10,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:10,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:10,936 INFO L124 PetriNetUnfolderBase]: 374/747 cut-off events. [2024-06-28 03:42:10,936 INFO L125 PetriNetUnfolderBase]: For 99818/99818 co-relation queries the response was YES. [2024-06-28 03:42:10,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5507 conditions, 747 events. 374/747 cut-off events. For 99818/99818 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3688 event pairs, 108 based on Foata normal form. 10/755 useless extension candidates. Maximal degree in co-relation 5437. Up to 531 conditions per place. [2024-06-28 03:42:10,942 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 81 selfloop transitions, 28 changer transitions 23/134 dead transitions. [2024-06-28 03:42:10,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 134 transitions, 1220 flow [2024-06-28 03:42:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 03:42:10,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 03:42:10,943 INFO L175 Difference]: Start difference. First operand has 184 places, 116 transitions, 894 flow. Second operand 12 states and 134 transitions. [2024-06-28 03:42:10,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 134 transitions, 1220 flow [2024-06-28 03:42:11,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 134 transitions, 1142 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:11,039 INFO L231 Difference]: Finished difference. Result has 175 places, 102 transitions, 770 flow [2024-06-28 03:42:11,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=770, PETRI_PLACES=175, PETRI_TRANSITIONS=102} [2024-06-28 03:42:11,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 03:42:11,040 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 102 transitions, 770 flow [2024-06-28 03:42:11,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:11,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:11,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:11,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:42:11,041 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)] === [2024-06-28 03:42:11,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1714395584, now seen corresponding path program 2 times [2024-06-28 03:42:11,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:11,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891807208] [2024-06-28 03:42:11,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:11,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:11,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:11,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891807208] [2024-06-28 03:42:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891807208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:11,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:11,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:11,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528031696] [2024-06-28 03:42:11,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:11,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:11,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:11,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:12,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:12,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 102 transitions, 770 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:12,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:12,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:12,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:12,332 INFO L124 PetriNetUnfolderBase]: 341/674 cut-off events. [2024-06-28 03:42:12,332 INFO L125 PetriNetUnfolderBase]: For 77568/77568 co-relation queries the response was YES. [2024-06-28 03:42:12,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5063 conditions, 674 events. 341/674 cut-off events. For 77568/77568 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3224 event pairs, 131 based on Foata normal form. 2/674 useless extension candidates. Maximal degree in co-relation 4996. Up to 612 conditions per place. [2024-06-28 03:42:12,336 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 99 selfloop transitions, 17 changer transitions 0/118 dead transitions. [2024-06-28 03:42:12,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 118 transitions, 1055 flow [2024-06-28 03:42:12,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:12,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:42:12,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:42:12,337 INFO L175 Difference]: Start difference. First operand has 175 places, 102 transitions, 770 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:42:12,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 118 transitions, 1055 flow [2024-06-28 03:42:12,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 118 transitions, 973 flow, removed 8 selfloop flow, removed 19 redundant places. [2024-06-28 03:42:12,440 INFO L231 Difference]: Finished difference. Result has 153 places, 105 transitions, 760 flow [2024-06-28 03:42:12,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=760, PETRI_PLACES=153, PETRI_TRANSITIONS=105} [2024-06-28 03:42:12,440 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-28 03:42:12,440 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 105 transitions, 760 flow [2024-06-28 03:42:12,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:12,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:12,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:12,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:42:12,441 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)] === [2024-06-28 03:42:12,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:12,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1722023940, now seen corresponding path program 28 times [2024-06-28 03:42:12,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:12,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875517398] [2024-06-28 03:42:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:13,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:13,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875517398] [2024-06-28 03:42:13,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875517398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:13,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:13,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:13,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620801597] [2024-06-28 03:42:13,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:13,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:13,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:13,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:13,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:13,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:13,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 105 transitions, 760 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:13,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:13,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:13,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:13,694 INFO L124 PetriNetUnfolderBase]: 357/710 cut-off events. [2024-06-28 03:42:13,694 INFO L125 PetriNetUnfolderBase]: For 68722/68722 co-relation queries the response was YES. [2024-06-28 03:42:13,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4833 conditions, 710 events. 357/710 cut-off events. For 68722/68722 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3485 event pairs, 143 based on Foata normal form. 10/718 useless extension candidates. Maximal degree in co-relation 4772. Up to 592 conditions per place. [2024-06-28 03:42:13,698 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 87 selfloop transitions, 24 changer transitions 11/124 dead transitions. [2024-06-28 03:42:13,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 124 transitions, 1072 flow [2024-06-28 03:42:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:42:13,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:42:13,699 INFO L175 Difference]: Start difference. First operand has 153 places, 105 transitions, 760 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:42:13,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 124 transitions, 1072 flow [2024-06-28 03:42:13,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 124 transitions, 1043 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:42:13,772 INFO L231 Difference]: Finished difference. Result has 157 places, 102 transitions, 762 flow [2024-06-28 03:42:13,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=762, PETRI_PLACES=157, PETRI_TRANSITIONS=102} [2024-06-28 03:42:13,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-28 03:42:13,773 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 102 transitions, 762 flow [2024-06-28 03:42:13,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:13,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:13,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:13,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:42:13,773 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)] === [2024-06-28 03:42:13,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:13,773 INFO L85 PathProgramCache]: Analyzing trace with hash 689637598, now seen corresponding path program 29 times [2024-06-28 03:42:13,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:13,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002268318] [2024-06-28 03:42:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:13,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:14,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:14,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:14,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002268318] [2024-06-28 03:42:14,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002268318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:14,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:14,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:14,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155111740] [2024-06-28 03:42:14,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:14,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:14,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:14,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:14,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:14,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:14,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 102 transitions, 762 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:14,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:14,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:14,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:15,050 INFO L124 PetriNetUnfolderBase]: 345/690 cut-off events. [2024-06-28 03:42:15,051 INFO L125 PetriNetUnfolderBase]: For 69128/69128 co-relation queries the response was YES. [2024-06-28 03:42:15,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4814 conditions, 690 events. 345/690 cut-off events. For 69128/69128 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3346 event pairs, 133 based on Foata normal form. 8/696 useless extension candidates. Maximal degree in co-relation 4752. Up to 383 conditions per place. [2024-06-28 03:42:15,055 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 80 selfloop transitions, 35 changer transitions 10/127 dead transitions. [2024-06-28 03:42:15,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 127 transitions, 1210 flow [2024-06-28 03:42:15,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:15,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:15,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:42:15,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 03:42:15,056 INFO L175 Difference]: Start difference. First operand has 157 places, 102 transitions, 762 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:42:15,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 127 transitions, 1210 flow [2024-06-28 03:42:15,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 127 transitions, 1154 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:15,140 INFO L231 Difference]: Finished difference. Result has 155 places, 99 transitions, 766 flow [2024-06-28 03:42:15,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=766, PETRI_PLACES=155, PETRI_TRANSITIONS=99} [2024-06-28 03:42:15,140 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-28 03:42:15,140 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 99 transitions, 766 flow [2024-06-28 03:42:15,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:15,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:15,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:15,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:42:15,141 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)] === [2024-06-28 03:42:15,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:15,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1722029520, now seen corresponding path program 30 times [2024-06-28 03:42:15,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:15,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961185028] [2024-06-28 03:42:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:15,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:15,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:15,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961185028] [2024-06-28 03:42:15,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961185028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:15,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:15,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:15,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014732260] [2024-06-28 03:42:15,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:15,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:15,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:15,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:15,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:16,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:16,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 99 transitions, 766 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:16,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:16,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:16,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:16,340 INFO L124 PetriNetUnfolderBase]: 335/672 cut-off events. [2024-06-28 03:42:16,340 INFO L125 PetriNetUnfolderBase]: For 66384/66384 co-relation queries the response was YES. [2024-06-28 03:42:16,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4743 conditions, 672 events. 335/672 cut-off events. For 66384/66384 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3251 event pairs, 139 based on Foata normal form. 8/678 useless extension candidates. Maximal degree in co-relation 4682. Up to 600 conditions per place. [2024-06-28 03:42:16,346 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 91 selfloop transitions, 9 changer transitions 13/115 dead transitions. [2024-06-28 03:42:16,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 115 transitions, 1042 flow [2024-06-28 03:42:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:16,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:42:16,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 03:42:16,347 INFO L175 Difference]: Start difference. First operand has 155 places, 99 transitions, 766 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:42:16,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 115 transitions, 1042 flow [2024-06-28 03:42:16,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 115 transitions, 982 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:16,450 INFO L231 Difference]: Finished difference. Result has 152 places, 95 transitions, 696 flow [2024-06-28 03:42:16,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=696, PETRI_PLACES=152, PETRI_TRANSITIONS=95} [2024-06-28 03:42:16,450 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-28 03:42:16,450 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 95 transitions, 696 flow [2024-06-28 03:42:16,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:16,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:16,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:16,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:42:16,451 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)] === [2024-06-28 03:42:16,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:16,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1141493086, now seen corresponding path program 3 times [2024-06-28 03:42:16,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:16,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100477105] [2024-06-28 03:42:16,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:16,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:17,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:17,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100477105] [2024-06-28 03:42:17,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100477105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:17,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:17,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:17,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564023720] [2024-06-28 03:42:17,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:17,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:17,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:17,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:17,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:17,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:17,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 95 transitions, 696 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:17,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:17,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:17,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:17,783 INFO L124 PetriNetUnfolderBase]: 319/636 cut-off events. [2024-06-28 03:42:17,784 INFO L125 PetriNetUnfolderBase]: For 54640/54640 co-relation queries the response was YES. [2024-06-28 03:42:17,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4501 conditions, 636 events. 319/636 cut-off events. For 54640/54640 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2986 event pairs, 124 based on Foata normal form. 2/636 useless extension candidates. Maximal degree in co-relation 4442. Up to 589 conditions per place. [2024-06-28 03:42:17,787 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 92 selfloop transitions, 14 changer transitions 0/108 dead transitions. [2024-06-28 03:42:17,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 108 transitions, 942 flow [2024-06-28 03:42:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:42:17,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:42:17,788 INFO L175 Difference]: Start difference. First operand has 152 places, 95 transitions, 696 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:42:17,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 108 transitions, 942 flow [2024-06-28 03:42:17,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 108 transitions, 916 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:17,839 INFO L231 Difference]: Finished difference. Result has 145 places, 96 transitions, 712 flow [2024-06-28 03:42:17,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=712, PETRI_PLACES=145, PETRI_TRANSITIONS=96} [2024-06-28 03:42:17,839 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-28 03:42:17,839 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 96 transitions, 712 flow [2024-06-28 03:42:17,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:17,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:17,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:17,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:42:17,840 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)] === [2024-06-28 03:42:17,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:17,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1152544276, now seen corresponding path program 4 times [2024-06-28 03:42:17,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:17,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400469957] [2024-06-28 03:42:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:17,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:18,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:18,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400469957] [2024-06-28 03:42:18,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400469957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:18,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:18,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:18,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042521342] [2024-06-28 03:42:18,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:18,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:18,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:18,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:18,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:18,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:18,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 96 transitions, 712 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:18,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:18,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:18,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:19,235 INFO L124 PetriNetUnfolderBase]: 323/644 cut-off events. [2024-06-28 03:42:19,235 INFO L125 PetriNetUnfolderBase]: For 47718/47718 co-relation queries the response was YES. [2024-06-28 03:42:19,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4424 conditions, 644 events. 323/644 cut-off events. For 47718/47718 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3047 event pairs, 139 based on Foata normal form. 2/644 useless extension candidates. Maximal degree in co-relation 4368. Up to 591 conditions per place. [2024-06-28 03:42:19,239 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 87 selfloop transitions, 20 changer transitions 0/109 dead transitions. [2024-06-28 03:42:19,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 109 transitions, 966 flow [2024-06-28 03:42:19,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:42:19,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:42:19,240 INFO L175 Difference]: Start difference. First operand has 145 places, 96 transitions, 712 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:42:19,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 109 transitions, 966 flow [2024-06-28 03:42:19,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 109 transitions, 934 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:19,289 INFO L231 Difference]: Finished difference. Result has 147 places, 97 transitions, 737 flow [2024-06-28 03:42:19,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=737, PETRI_PLACES=147, PETRI_TRANSITIONS=97} [2024-06-28 03:42:19,289 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-28 03:42:19,289 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 97 transitions, 737 flow [2024-06-28 03:42:19,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:19,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:19,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:19,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:42:19,289 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)] === [2024-06-28 03:42:19,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:19,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2128551882, now seen corresponding path program 31 times [2024-06-28 03:42:19,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:19,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511755717] [2024-06-28 03:42:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:19,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:20,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:20,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511755717] [2024-06-28 03:42:20,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511755717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:20,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:20,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:20,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127225584] [2024-06-28 03:42:20,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:20,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:20,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:20,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:20,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:20,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:20,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 97 transitions, 737 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:20,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:20,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:20,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:20,654 INFO L124 PetriNetUnfolderBase]: 364/731 cut-off events. [2024-06-28 03:42:20,655 INFO L125 PetriNetUnfolderBase]: For 65663/65663 co-relation queries the response was YES. [2024-06-28 03:42:20,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5211 conditions, 731 events. 364/731 cut-off events. For 65663/65663 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3667 event pairs, 148 based on Foata normal form. 8/737 useless extension candidates. Maximal degree in co-relation 5154. Up to 503 conditions per place. [2024-06-28 03:42:20,659 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 32 changer transitions 9/122 dead transitions. [2024-06-28 03:42:20,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 122 transitions, 1161 flow [2024-06-28 03:42:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 03:42:20,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 03:42:20,661 INFO L175 Difference]: Start difference. First operand has 147 places, 97 transitions, 737 flow. Second operand 12 states and 142 transitions. [2024-06-28 03:42:20,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 122 transitions, 1161 flow [2024-06-28 03:42:20,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 122 transitions, 1116 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:20,725 INFO L231 Difference]: Finished difference. Result has 151 places, 93 transitions, 732 flow [2024-06-28 03:42:20,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=732, PETRI_PLACES=151, PETRI_TRANSITIONS=93} [2024-06-28 03:42:20,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-28 03:42:20,726 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 93 transitions, 732 flow [2024-06-28 03:42:20,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:20,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:20,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:20,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:42:20,727 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)] === [2024-06-28 03:42:20,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:20,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2128557462, now seen corresponding path program 32 times [2024-06-28 03:42:20,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:20,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100169033] [2024-06-28 03:42:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:20,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:21,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:21,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100169033] [2024-06-28 03:42:21,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100169033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:21,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:21,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:21,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254598003] [2024-06-28 03:42:21,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:21,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:21,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:21,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:21,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:21,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:21,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 93 transitions, 732 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:21,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:21,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:21,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:21,966 INFO L124 PetriNetUnfolderBase]: 327/660 cut-off events. [2024-06-28 03:42:21,967 INFO L125 PetriNetUnfolderBase]: For 60878/60878 co-relation queries the response was YES. [2024-06-28 03:42:21,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4610 conditions, 660 events. 327/660 cut-off events. For 60878/60878 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3191 event pairs, 135 based on Foata normal form. 10/668 useless extension candidates. Maximal degree in co-relation 4552. Up to 503 conditions per place. [2024-06-28 03:42:21,970 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 23 changer transitions 21/113 dead transitions. [2024-06-28 03:42:21,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 113 transitions, 1024 flow [2024-06-28 03:42:21,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:21,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 03:42:21,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:42:21,971 INFO L175 Difference]: Start difference. First operand has 151 places, 93 transitions, 732 flow. Second operand 12 states and 136 transitions. [2024-06-28 03:42:21,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 113 transitions, 1024 flow [2024-06-28 03:42:22,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 113 transitions, 958 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:42:22,026 INFO L231 Difference]: Finished difference. Result has 148 places, 82 transitions, 639 flow [2024-06-28 03:42:22,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=639, PETRI_PLACES=148, PETRI_TRANSITIONS=82} [2024-06-28 03:42:22,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-28 03:42:22,027 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 82 transitions, 639 flow [2024-06-28 03:42:22,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:22,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:22,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:22,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:42:22,027 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)] === [2024-06-28 03:42:22,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:22,027 INFO L85 PathProgramCache]: Analyzing trace with hash -563932908, now seen corresponding path program 5 times [2024-06-28 03:42:22,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:22,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818366877] [2024-06-28 03:42:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:22,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:22,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:22,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818366877] [2024-06-28 03:42:22,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818366877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:22,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:22,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:22,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453822035] [2024-06-28 03:42:22,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:22,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:22,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:22,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:22,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:23,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:23,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 82 transitions, 639 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:23,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:23,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:23,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:23,366 INFO L124 PetriNetUnfolderBase]: 287/580 cut-off events. [2024-06-28 03:42:23,366 INFO L125 PetriNetUnfolderBase]: For 45878/45878 co-relation queries the response was YES. [2024-06-28 03:42:23,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4098 conditions, 580 events. 287/580 cut-off events. For 45878/45878 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2677 event pairs, 138 based on Foata normal form. 2/580 useless extension candidates. Maximal degree in co-relation 4042. Up to 511 conditions per place. [2024-06-28 03:42:23,369 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 20 changer transitions 0/95 dead transitions. [2024-06-28 03:42:23,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 95 transitions, 865 flow [2024-06-28 03:42:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:23,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:42:23,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:42:23,370 INFO L175 Difference]: Start difference. First operand has 148 places, 82 transitions, 639 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:42:23,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 95 transitions, 865 flow [2024-06-28 03:42:23,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 95 transitions, 805 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-28 03:42:23,406 INFO L231 Difference]: Finished difference. Result has 132 places, 83 transitions, 637 flow [2024-06-28 03:42:23,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=637, PETRI_PLACES=132, PETRI_TRANSITIONS=83} [2024-06-28 03:42:23,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-28 03:42:23,406 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 83 transitions, 637 flow [2024-06-28 03:42:23,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:23,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:23,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:23,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:42:23,406 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)] === [2024-06-28 03:42:23,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:23,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1967108044, now seen corresponding path program 33 times [2024-06-28 03:42:23,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:23,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697480285] [2024-06-28 03:42:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:23,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:24,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:24,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:24,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697480285] [2024-06-28 03:42:24,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697480285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:24,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:24,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:24,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001628903] [2024-06-28 03:42:24,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:24,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:24,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:24,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:24,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:24,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:24,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 83 transitions, 637 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:24,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:24,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:24,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:24,621 INFO L124 PetriNetUnfolderBase]: 303/616 cut-off events. [2024-06-28 03:42:24,621 INFO L125 PetriNetUnfolderBase]: For 39924/39924 co-relation queries the response was YES. [2024-06-28 03:42:24,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3934 conditions, 616 events. 303/616 cut-off events. For 39924/39924 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2938 event pairs, 138 based on Foata normal form. 10/624 useless extension candidates. Maximal degree in co-relation 3884. Up to 466 conditions per place. [2024-06-28 03:42:24,624 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 60 selfloop transitions, 30 changer transitions 11/103 dead transitions. [2024-06-28 03:42:24,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 103 transitions, 911 flow [2024-06-28 03:42:24,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:24,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:42:24,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:42:24,625 INFO L175 Difference]: Start difference. First operand has 132 places, 83 transitions, 637 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:42:24,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 103 transitions, 911 flow [2024-06-28 03:42:24,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 103 transitions, 863 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:24,652 INFO L231 Difference]: Finished difference. Result has 135 places, 80 transitions, 630 flow [2024-06-28 03:42:24,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=630, PETRI_PLACES=135, PETRI_TRANSITIONS=80} [2024-06-28 03:42:24,652 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-28 03:42:24,652 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 80 transitions, 630 flow [2024-06-28 03:42:24,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:24,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:24,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:24,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:42:24,653 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)] === [2024-06-28 03:42:24,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:24,653 INFO L85 PathProgramCache]: Analyzing trace with hash 889083538, now seen corresponding path program 34 times [2024-06-28 03:42:24,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:24,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062593284] [2024-06-28 03:42:24,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:24,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:25,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:25,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062593284] [2024-06-28 03:42:25,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062593284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:25,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:25,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:25,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324690539] [2024-06-28 03:42:25,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:25,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:25,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:25,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:25,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:25,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:25,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 80 transitions, 630 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:25,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:25,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:25,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:25,960 INFO L124 PetriNetUnfolderBase]: 291/596 cut-off events. [2024-06-28 03:42:25,960 INFO L125 PetriNetUnfolderBase]: For 40551/40551 co-relation queries the response was YES. [2024-06-28 03:42:25,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3901 conditions, 596 events. 291/596 cut-off events. For 40551/40551 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2822 event pairs, 128 based on Foata normal form. 8/602 useless extension candidates. Maximal degree in co-relation 3850. Up to 394 conditions per place. [2024-06-28 03:42:25,963 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 75 selfloop transitions, 20 changer transitions 8/105 dead transitions. [2024-06-28 03:42:25,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 105 transitions, 1020 flow [2024-06-28 03:42:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 03:42:25,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 03:42:25,964 INFO L175 Difference]: Start difference. First operand has 135 places, 80 transitions, 630 flow. Second operand 11 states and 131 transitions. [2024-06-28 03:42:25,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 105 transitions, 1020 flow [2024-06-28 03:42:25,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 105 transitions, 952 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:25,993 INFO L231 Difference]: Finished difference. Result has 133 places, 77 transitions, 588 flow [2024-06-28 03:42:25,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=133, PETRI_TRANSITIONS=77} [2024-06-28 03:42:25,994 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-28 03:42:25,994 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 77 transitions, 588 flow [2024-06-28 03:42:25,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:25,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:25,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:25,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:42:25,994 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)] === [2024-06-28 03:42:25,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:25,995 INFO L85 PathProgramCache]: Analyzing trace with hash -765944514, now seen corresponding path program 6 times [2024-06-28 03:42:25,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:25,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469774958] [2024-06-28 03:42:25,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:25,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:26,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:26,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469774958] [2024-06-28 03:42:26,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469774958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:26,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:26,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:26,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617297042] [2024-06-28 03:42:26,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:26,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:26,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:26,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:26,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:27,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:27,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 77 transitions, 588 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:27,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:27,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:27,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:27,329 INFO L124 PetriNetUnfolderBase]: 276/563 cut-off events. [2024-06-28 03:42:27,330 INFO L125 PetriNetUnfolderBase]: For 34624/34624 co-relation queries the response was YES. [2024-06-28 03:42:27,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3740 conditions, 563 events. 276/563 cut-off events. For 34624/34624 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2592 event pairs, 126 based on Foata normal form. 2/563 useless extension candidates. Maximal degree in co-relation 3690. Up to 483 conditions per place. [2024-06-28 03:42:27,334 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 22 changer transitions 0/91 dead transitions. [2024-06-28 03:42:27,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 91 transitions, 814 flow [2024-06-28 03:42:27,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:42:27,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:42:27,335 INFO L175 Difference]: Start difference. First operand has 133 places, 77 transitions, 588 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:42:27,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 91 transitions, 814 flow [2024-06-28 03:42:27,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 91 transitions, 774 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:27,365 INFO L231 Difference]: Finished difference. Result has 129 places, 78 transitions, 612 flow [2024-06-28 03:42:27,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=612, PETRI_PLACES=129, PETRI_TRANSITIONS=78} [2024-06-28 03:42:27,365 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-28 03:42:27,365 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 78 transitions, 612 flow [2024-06-28 03:42:27,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:27,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:27,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:27,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:42:27,366 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)] === [2024-06-28 03:42:27,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:27,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1466510912, now seen corresponding path program 35 times [2024-06-28 03:42:27,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:27,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595574533] [2024-06-28 03:42:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:27,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:28,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:28,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595574533] [2024-06-28 03:42:28,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595574533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:28,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:28,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:28,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459739860] [2024-06-28 03:42:28,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:28,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:28,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:28,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:28,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:28,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:28,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 78 transitions, 612 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:28,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:28,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:28,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:28,590 INFO L124 PetriNetUnfolderBase]: 278/573 cut-off events. [2024-06-28 03:42:28,590 INFO L125 PetriNetUnfolderBase]: For 33610/33610 co-relation queries the response was YES. [2024-06-28 03:42:28,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3556 conditions, 573 events. 278/573 cut-off events. For 33610/33610 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2697 event pairs, 138 based on Foata normal form. 10/581 useless extension candidates. Maximal degree in co-relation 3508. Up to 476 conditions per place. [2024-06-28 03:42:28,593 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 65 selfloop transitions, 17 changer transitions 12/96 dead transitions. [2024-06-28 03:42:28,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 96 transitions, 864 flow [2024-06-28 03:42:28,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:28,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:42:28,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:42:28,594 INFO L175 Difference]: Start difference. First operand has 129 places, 78 transitions, 612 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:42:28,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 96 transitions, 864 flow [2024-06-28 03:42:28,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 96 transitions, 810 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:28,618 INFO L231 Difference]: Finished difference. Result has 132 places, 74 transitions, 568 flow [2024-06-28 03:42:28,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=568, PETRI_PLACES=132, PETRI_TRANSITIONS=74} [2024-06-28 03:42:28,618 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-28 03:42:28,618 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 74 transitions, 568 flow [2024-06-28 03:42:28,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:28,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:28,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:28,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:42:28,619 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)] === [2024-06-28 03:42:28,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:28,619 INFO L85 PathProgramCache]: Analyzing trace with hash 889298864, now seen corresponding path program 7 times [2024-06-28 03:42:28,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:28,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254706472] [2024-06-28 03:42:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:28,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:29,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:29,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254706472] [2024-06-28 03:42:29,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254706472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:29,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:29,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:29,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430221368] [2024-06-28 03:42:29,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:29,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:29,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:29,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:29,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:29,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:29,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 74 transitions, 568 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:29,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:29,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:29,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:29,847 INFO L124 PetriNetUnfolderBase]: 263/552 cut-off events. [2024-06-28 03:42:29,847 INFO L125 PetriNetUnfolderBase]: For 35012/35012 co-relation queries the response was YES. [2024-06-28 03:42:29,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3397 conditions, 552 events. 263/552 cut-off events. For 35012/35012 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2618 event pairs, 129 based on Foata normal form. 12/562 useless extension candidates. Maximal degree in co-relation 3348. Up to 435 conditions per place. [2024-06-28 03:42:29,849 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 63 selfloop transitions, 13 changer transitions 17/95 dead transitions. [2024-06-28 03:42:29,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 95 transitions, 842 flow [2024-06-28 03:42:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:29,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:29,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 03:42:29,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 03:42:29,850 INFO L175 Difference]: Start difference. First operand has 132 places, 74 transitions, 568 flow. Second operand 11 states and 128 transitions. [2024-06-28 03:42:29,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 95 transitions, 842 flow [2024-06-28 03:42:29,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 95 transitions, 804 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:29,876 INFO L231 Difference]: Finished difference. Result has 130 places, 68 transitions, 513 flow [2024-06-28 03:42:29,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=513, PETRI_PLACES=130, PETRI_TRANSITIONS=68} [2024-06-28 03:42:29,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-28 03:42:29,877 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 68 transitions, 513 flow [2024-06-28 03:42:29,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:29,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:29,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:29,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:42:29,877 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)] === [2024-06-28 03:42:29,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:29,877 INFO L85 PathProgramCache]: Analyzing trace with hash 896717474, now seen corresponding path program 8 times [2024-06-28 03:42:29,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:29,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892340894] [2024-06-28 03:42:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:29,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:30,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:30,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892340894] [2024-06-28 03:42:30,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892340894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:30,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:30,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:30,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390908210] [2024-06-28 03:42:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:30,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:30,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:30,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:30,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:30,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 68 transitions, 513 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:30,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:30,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:30,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:31,105 INFO L124 PetriNetUnfolderBase]: 225/478 cut-off events. [2024-06-28 03:42:31,105 INFO L125 PetriNetUnfolderBase]: For 25716/25716 co-relation queries the response was YES. [2024-06-28 03:42:31,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2974 conditions, 478 events. 225/478 cut-off events. For 25716/25716 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2153 event pairs, 122 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2926. Up to 393 conditions per place. [2024-06-28 03:42:31,107 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 60 selfloop transitions, 19 changer transitions 0/81 dead transitions. [2024-06-28 03:42:31,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 81 transitions, 703 flow [2024-06-28 03:42:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:31,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:42:31,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 03:42:31,108 INFO L175 Difference]: Start difference. First operand has 130 places, 68 transitions, 513 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:42:31,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 81 transitions, 703 flow [2024-06-28 03:42:31,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 81 transitions, 673 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:31,135 INFO L231 Difference]: Finished difference. Result has 125 places, 68 transitions, 525 flow [2024-06-28 03:42:31,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=525, PETRI_PLACES=125, PETRI_TRANSITIONS=68} [2024-06-28 03:42:31,135 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-28 03:42:31,135 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 68 transitions, 525 flow [2024-06-28 03:42:31,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:31,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:31,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:31,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:42:31,136 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)] === [2024-06-28 03:42:31,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:31,136 INFO L85 PathProgramCache]: Analyzing trace with hash 896440768, now seen corresponding path program 36 times [2024-06-28 03:42:31,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:31,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967123554] [2024-06-28 03:42:31,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:31,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:32,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:32,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967123554] [2024-06-28 03:42:32,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967123554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:32,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:32,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:32,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690924308] [2024-06-28 03:42:32,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:32,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:32,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:32,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:32,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:32,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:32,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 68 transitions, 525 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:32,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:32,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:32,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:32,560 INFO L124 PetriNetUnfolderBase]: 227/488 cut-off events. [2024-06-28 03:42:32,560 INFO L125 PetriNetUnfolderBase]: For 26730/26730 co-relation queries the response was YES. [2024-06-28 03:42:32,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 488 events. 227/488 cut-off events. For 26730/26730 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2213 event pairs, 126 based on Foata normal form. 10/496 useless extension candidates. Maximal degree in co-relation 2786. Up to 390 conditions per place. [2024-06-28 03:42:32,562 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 61 selfloop transitions, 13 changer transitions 11/87 dead transitions. [2024-06-28 03:42:32,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 87 transitions, 763 flow [2024-06-28 03:42:32,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:32,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:42:32,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:42:32,563 INFO L175 Difference]: Start difference. First operand has 125 places, 68 transitions, 525 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:42:32,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 87 transitions, 763 flow [2024-06-28 03:42:32,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 87 transitions, 713 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:32,592 INFO L231 Difference]: Finished difference. Result has 128 places, 65 transitions, 478 flow [2024-06-28 03:42:32,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=478, PETRI_PLACES=128, PETRI_TRANSITIONS=65} [2024-06-28 03:42:32,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-28 03:42:32,593 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 65 transitions, 478 flow [2024-06-28 03:42:32,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:32,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:32,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:32,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:42:32,593 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)] === [2024-06-28 03:42:32,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:32,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1994749060, now seen corresponding path program 37 times [2024-06-28 03:42:32,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:32,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843962828] [2024-06-28 03:42:32,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:32,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:33,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:33,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843962828] [2024-06-28 03:42:33,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843962828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:33,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:33,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:33,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253736524] [2024-06-28 03:42:33,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:33,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:33,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:33,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:33,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:33,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:33,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 65 transitions, 478 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:33,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:33,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:33,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:33,866 INFO L124 PetriNetUnfolderBase]: 191/420 cut-off events. [2024-06-28 03:42:33,866 INFO L125 PetriNetUnfolderBase]: For 21763/21763 co-relation queries the response was YES. [2024-06-28 03:42:33,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 420 events. 191/420 cut-off events. For 21763/21763 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1822 event pairs, 75 based on Foata normal form. 8/426 useless extension candidates. Maximal degree in co-relation 2250. Up to 289 conditions per place. [2024-06-28 03:42:33,868 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 50 selfloop transitions, 13 changer transitions 18/83 dead transitions. [2024-06-28 03:42:33,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 83 transitions, 698 flow [2024-06-28 03:42:33,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:33,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 03:42:33,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:42:33,875 INFO L175 Difference]: Start difference. First operand has 128 places, 65 transitions, 478 flow. Second operand 12 states and 128 transitions. [2024-06-28 03:42:33,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 83 transitions, 698 flow [2024-06-28 03:42:33,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 83 transitions, 657 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:33,916 INFO L231 Difference]: Finished difference. Result has 126 places, 58 transitions, 429 flow [2024-06-28 03:42:33,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=126, PETRI_TRANSITIONS=58} [2024-06-28 03:42:33,916 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-28 03:42:33,917 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 58 transitions, 429 flow [2024-06-28 03:42:33,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:33,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:33,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:33,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:42:33,917 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)] === [2024-06-28 03:42:33,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:33,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1320784414, now seen corresponding path program 38 times [2024-06-28 03:42:33,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:33,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134784551] [2024-06-28 03:42:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:33,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:34,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:34,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134784551] [2024-06-28 03:42:34,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134784551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:34,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:34,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:34,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67879042] [2024-06-28 03:42:34,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:34,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:34,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:34,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:34,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:34,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:34,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 58 transitions, 429 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:34,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:34,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:34,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:35,217 INFO L124 PetriNetUnfolderBase]: 153/336 cut-off events. [2024-06-28 03:42:35,218 INFO L125 PetriNetUnfolderBase]: For 15722/15722 co-relation queries the response was YES. [2024-06-28 03:42:35,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 336 events. 153/336 cut-off events. For 15722/15722 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1354 event pairs, 57 based on Foata normal form. 8/342 useless extension candidates. Maximal degree in co-relation 1675. Up to 230 conditions per place. [2024-06-28 03:42:35,219 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 41 selfloop transitions, 8 changer transitions 23/74 dead transitions. [2024-06-28 03:42:35,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 74 transitions, 611 flow [2024-06-28 03:42:35,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:35,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:35,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 03:42:35,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 03:42:35,224 INFO L175 Difference]: Start difference. First operand has 126 places, 58 transitions, 429 flow. Second operand 12 states and 123 transitions. [2024-06-28 03:42:35,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 74 transitions, 611 flow [2024-06-28 03:42:35,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 74 transitions, 538 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-28 03:42:35,243 INFO L231 Difference]: Finished difference. Result has 112 places, 48 transitions, 320 flow [2024-06-28 03:42:35,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=320, PETRI_PLACES=112, PETRI_TRANSITIONS=48} [2024-06-28 03:42:35,244 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-28 03:42:35,244 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 48 transitions, 320 flow [2024-06-28 03:42:35,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:35,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:35,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:35,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:42:35,245 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)] === [2024-06-28 03:42:35,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:35,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1606654719, now seen corresponding path program 1 times [2024-06-28 03:42:35,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:35,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862474166] [2024-06-28 03:42:35,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:35,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:36,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:36,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862474166] [2024-06-28 03:42:36,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862474166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:36,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:36,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:42:36,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020166619] [2024-06-28 03:42:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:36,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:42:36,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:36,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:42:36,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:42:36,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:36,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 48 transitions, 320 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:36,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:36,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:36,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:36,960 INFO L124 PetriNetUnfolderBase]: 137/296 cut-off events. [2024-06-28 03:42:36,960 INFO L125 PetriNetUnfolderBase]: For 10851/10851 co-relation queries the response was YES. [2024-06-28 03:42:36,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1427 conditions, 296 events. 137/296 cut-off events. For 10851/10851 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1142 event pairs, 52 based on Foata normal form. 6/301 useless extension candidates. Maximal degree in co-relation 1386. Up to 232 conditions per place. [2024-06-28 03:42:36,961 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 38 selfloop transitions, 6 changer transitions 16/62 dead transitions. [2024-06-28 03:42:36,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 62 transitions, 474 flow [2024-06-28 03:42:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:36,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:42:36,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 03:42:36,962 INFO L175 Difference]: Start difference. First operand has 112 places, 48 transitions, 320 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:42:36,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 62 transitions, 474 flow [2024-06-28 03:42:36,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 62 transitions, 425 flow, removed 10 selfloop flow, removed 15 redundant places. [2024-06-28 03:42:36,970 INFO L231 Difference]: Finished difference. Result has 92 places, 43 transitions, 255 flow [2024-06-28 03:42:36,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=255, PETRI_PLACES=92, PETRI_TRANSITIONS=43} [2024-06-28 03:42:36,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-28 03:42:36,970 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 43 transitions, 255 flow [2024-06-28 03:42:36,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:36,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:36,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:36,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:42:36,970 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)] === [2024-06-28 03:42:36,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:36,971 INFO L85 PathProgramCache]: Analyzing trace with hash -294844877, now seen corresponding path program 2 times [2024-06-28 03:42:36,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:36,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631889704] [2024-06-28 03:42:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:36,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:37,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:37,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631889704] [2024-06-28 03:42:37,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631889704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:37,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:37,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:37,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357695834] [2024-06-28 03:42:37,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:37,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:37,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:37,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:37,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:38,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:38,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 43 transitions, 255 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:38,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:38,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:38,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:38,350 INFO L124 PetriNetUnfolderBase]: 124/269 cut-off events. [2024-06-28 03:42:38,350 INFO L125 PetriNetUnfolderBase]: For 6360/6360 co-relation queries the response was YES. [2024-06-28 03:42:38,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 269 events. 124/269 cut-off events. For 6360/6360 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1010 event pairs, 48 based on Foata normal form. 6/274 useless extension candidates. Maximal degree in co-relation 1132. Up to 200 conditions per place. [2024-06-28 03:42:38,352 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 33 selfloop transitions, 8 changer transitions 14/57 dead transitions. [2024-06-28 03:42:38,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 57 transitions, 395 flow [2024-06-28 03:42:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:42:38,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 03:42:38,352 INFO L175 Difference]: Start difference. First operand has 92 places, 43 transitions, 255 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:42:38,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 57 transitions, 395 flow [2024-06-28 03:42:38,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 57 transitions, 375 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:38,359 INFO L231 Difference]: Finished difference. Result has 85 places, 39 transitions, 235 flow [2024-06-28 03:42:38,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=74, 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=11, PETRI_FLOW=235, PETRI_PLACES=85, PETRI_TRANSITIONS=39} [2024-06-28 03:42:38,359 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-28 03:42:38,359 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 39 transitions, 235 flow [2024-06-28 03:42:38,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:38,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:38,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:38,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:42:38,360 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)] === [2024-06-28 03:42:38,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2028150451, now seen corresponding path program 3 times [2024-06-28 03:42:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:38,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139529198] [2024-06-28 03:42:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:38,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:39,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:39,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139529198] [2024-06-28 03:42:39,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139529198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:39,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:39,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:42:39,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208788819] [2024-06-28 03:42:39,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:39,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:42:39,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:39,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:42:39,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:42:39,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:39,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 39 transitions, 235 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:39,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:39,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:39,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:40,114 INFO L124 PetriNetUnfolderBase]: 95/210 cut-off events. [2024-06-28 03:42:40,114 INFO L125 PetriNetUnfolderBase]: For 3640/3640 co-relation queries the response was YES. [2024-06-28 03:42:40,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 210 events. 95/210 cut-off events. For 3640/3640 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 703 event pairs, 33 based on Foata normal form. 6/215 useless extension candidates. Maximal degree in co-relation 822. Up to 143 conditions per place. [2024-06-28 03:42:40,115 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 32 selfloop transitions, 8 changer transitions 11/53 dead transitions. [2024-06-28 03:42:40,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 53 transitions, 371 flow [2024-06-28 03:42:40,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:40,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:40,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-28 03:42:40,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-28 03:42:40,116 INFO L175 Difference]: Start difference. First operand has 85 places, 39 transitions, 235 flow. Second operand 11 states and 108 transitions. [2024-06-28 03:42:40,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 53 transitions, 371 flow [2024-06-28 03:42:40,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 53 transitions, 347 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:40,119 INFO L231 Difference]: Finished difference. Result has 79 places, 36 transitions, 211 flow [2024-06-28 03:42:40,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=211, PETRI_PLACES=79, PETRI_TRANSITIONS=36} [2024-06-28 03:42:40,120 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-28 03:42:40,120 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 36 transitions, 211 flow [2024-06-28 03:42:40,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:40,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:40,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:40,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 03:42:40,120 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)] === [2024-06-28 03:42:40,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2028438751, now seen corresponding path program 4 times [2024-06-28 03:42:40,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:40,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170442268] [2024-06-28 03:42:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:40,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:41,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:41,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170442268] [2024-06-28 03:42:41,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170442268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:41,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:41,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:42:41,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327917113] [2024-06-28 03:42:41,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:41,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:42:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:41,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:42:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:42:41,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:41,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 36 transitions, 211 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:41,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:41,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:41,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:41,814 INFO L124 PetriNetUnfolderBase]: 70/159 cut-off events. [2024-06-28 03:42:41,814 INFO L125 PetriNetUnfolderBase]: For 1792/1792 co-relation queries the response was YES. [2024-06-28 03:42:41,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 159 events. 70/159 cut-off events. For 1792/1792 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 451 event pairs, 18 based on Foata normal form. 6/164 useless extension candidates. Maximal degree in co-relation 550. Up to 92 conditions per place. [2024-06-28 03:42:41,814 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 26 selfloop transitions, 4 changer transitions 18/50 dead transitions. [2024-06-28 03:42:41,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 50 transitions, 339 flow [2024-06-28 03:42:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:41,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 03:42:41,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-28 03:42:41,815 INFO L175 Difference]: Start difference. First operand has 79 places, 36 transitions, 211 flow. Second operand 11 states and 107 transitions. [2024-06-28 03:42:41,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 50 transitions, 339 flow [2024-06-28 03:42:41,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 50 transitions, 317 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:41,817 INFO L231 Difference]: Finished difference. Result has 72 places, 30 transitions, 170 flow [2024-06-28 03:42:41,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=170, PETRI_PLACES=72, PETRI_TRANSITIONS=30} [2024-06-28 03:42:41,817 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-06-28 03:42:41,818 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 30 transitions, 170 flow [2024-06-28 03:42:41,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:41,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:41,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:41,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 03:42:41,818 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)] === [2024-06-28 03:42:41,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:41,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2068148703, now seen corresponding path program 5 times [2024-06-28 03:42:41,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:41,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083561010] [2024-06-28 03:42:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:41,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:43,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:43,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083561010] [2024-06-28 03:42:43,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083561010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:43,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:43,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:42:43,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266208671] [2024-06-28 03:42:43,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:43,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:42:43,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:43,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:42:43,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:42:43,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:43,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 30 transitions, 170 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:43,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:43,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:43,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:43,571 INFO L124 PetriNetUnfolderBase]: 56/129 cut-off events. [2024-06-28 03:42:43,571 INFO L125 PetriNetUnfolderBase]: For 1398/1398 co-relation queries the response was YES. [2024-06-28 03:42:43,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 129 events. 56/129 cut-off events. For 1398/1398 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 328 event pairs, 16 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 444. Up to 54 conditions per place. [2024-06-28 03:42:43,572 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 19 selfloop transitions, 9 changer transitions 13/43 dead transitions. [2024-06-28 03:42:43,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 43 transitions, 282 flow [2024-06-28 03:42:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-28 03:42:43,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-28 03:42:43,573 INFO L175 Difference]: Start difference. First operand has 72 places, 30 transitions, 170 flow. Second operand 11 states and 104 transitions. [2024-06-28 03:42:43,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 43 transitions, 282 flow [2024-06-28 03:42:43,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 43 transitions, 264 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:43,574 INFO L231 Difference]: Finished difference. Result has 62 places, 25 transitions, 141 flow [2024-06-28 03:42:43,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=141, PETRI_PLACES=62, PETRI_TRANSITIONS=25} [2024-06-28 03:42:43,574 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-28 03:42:43,574 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 25 transitions, 141 flow [2024-06-28 03:42:43,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:43,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:43,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:43,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 03:42:43,575 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)] === [2024-06-28 03:42:43,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:43,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1368845055, now seen corresponding path program 6 times [2024-06-28 03:42:43,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:43,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912065844] [2024-06-28 03:42:43,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:43,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:44,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:44,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912065844] [2024-06-28 03:42:44,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912065844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:44,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:44,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:42:44,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949351461] [2024-06-28 03:42:44,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:44,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:42:44,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:44,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:42:44,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:42:44,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:42:44,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 25 transitions, 141 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:44,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:44,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:42:44,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:45,190 INFO L124 PetriNetUnfolderBase]: 28/73 cut-off events. [2024-06-28 03:42:45,191 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2024-06-28 03:42:45,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 73 events. 28/73 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 112 event pairs, 1 based on Foata normal form. 6/78 useless extension candidates. Maximal degree in co-relation 216. Up to 24 conditions per place. [2024-06-28 03:42:45,191 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-28 03:42:45,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 33 transitions, 197 flow [2024-06-28 03:42:45,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:45,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-28 03:42:45,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-28 03:42:45,192 INFO L175 Difference]: Start difference. First operand has 62 places, 25 transitions, 141 flow. Second operand 11 states and 96 transitions. [2024-06-28 03:42:45,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 33 transitions, 197 flow [2024-06-28 03:42:45,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 33 transitions, 155 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-06-28 03:42:45,192 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-06-28 03:42:45,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-06-28 03:42:45,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-28 03:42:45,193 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-06-28 03:42:45,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:45,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:42:45,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:42:45,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:42:45,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:42:45,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 03:42:45,196 INFO L445 BasicCegarLoop]: Path program histogram: [38, 23, 20, 13, 11, 8, 8, 6, 5, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:45,199 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:42:45,199 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:42:45,203 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:42:45,203 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:42:45,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:42:45 BasicIcfg [2024-06-28 03:42:45,204 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:42:45,204 INFO L158 Benchmark]: Toolchain (without parser) took 228102.72ms. Allocated memory was 146.8MB in the beginning and 994.1MB in the end (delta: 847.2MB). Free memory was 84.9MB in the beginning and 479.7MB in the end (delta: -394.7MB). Peak memory consumption was 454.5MB. Max. memory is 16.1GB. [2024-06-28 03:42:45,204 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 146.8MB. Free memory is still 110.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:42:45,204 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 146.8MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:42:45,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 667.07ms. Allocated memory is still 146.8MB. Free memory was 84.9MB in the beginning and 51.4MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-28 03:42:45,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.26ms. Allocated memory is still 146.8MB. Free memory was 51.4MB in the beginning and 48.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 03:42:45,205 INFO L158 Benchmark]: Boogie Preprocessor took 72.29ms. Allocated memory is still 146.8MB. Free memory was 48.5MB in the beginning and 45.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:42:45,205 INFO L158 Benchmark]: RCFGBuilder took 728.72ms. Allocated memory was 146.8MB in the beginning and 188.7MB in the end (delta: 41.9MB). Free memory was 45.2MB in the beginning and 117.0MB in the end (delta: -71.8MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2024-06-28 03:42:45,206 INFO L158 Benchmark]: TraceAbstraction took 226531.88ms. Allocated memory was 188.7MB in the beginning and 994.1MB in the end (delta: 805.3MB). Free memory was 116.0MB in the beginning and 479.7MB in the end (delta: -363.7MB). Peak memory consumption was 441.6MB. Max. memory is 16.1GB. [2024-06-28 03:42:45,207 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 0.19ms. Allocated memory is still 146.8MB. Free memory is still 110.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 146.8MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 667.07ms. Allocated memory is still 146.8MB. Free memory was 84.9MB in the beginning and 51.4MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.26ms. Allocated memory is still 146.8MB. Free memory was 51.4MB in the beginning and 48.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.29ms. Allocated memory is still 146.8MB. Free memory was 48.5MB in the beginning and 45.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 728.72ms. Allocated memory was 146.8MB in the beginning and 188.7MB in the end (delta: 41.9MB). Free memory was 45.2MB in the beginning and 117.0MB in the end (delta: -71.8MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * TraceAbstraction took 226531.88ms. Allocated memory was 188.7MB in the beginning and 994.1MB in the end (delta: 805.3MB). Free memory was 116.0MB in the beginning and 479.7MB in the end (delta: -363.7MB). Peak memory consumption was 441.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 818]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 819]: 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, 50 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: 226.4s, OverallIterations: 163, TraceHistogramMax: 1, PathProgramHistogramMax: 38, EmptinessCheckTime: 0.0s, AutomataDifference: 94.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11204 SdHoareTripleChecker+Valid, 39.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9405 mSDsluCounter, 9910 SdHoareTripleChecker+Invalid, 33.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8807 mSDsCounter, 2561 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 59538 IncrementalHoareTripleChecker+Invalid, 62099 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2561 mSolverCounterUnsat, 1103 mSDtfsCounter, 59538 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1791 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1790 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3760 ImplicationChecksByTransitivity, 53.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2800occurred in iteration=89, InterpolantAutomatonStates: 1606, 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: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 129.7s InterpolantComputationTime, 2657 NumberOfCodeBlocks, 2657 NumberOfCodeBlocksAsserted, 163 NumberOfCheckSat, 2494 ConstructedInterpolants, 0 QuantifiedInterpolants, 113646 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 163 InterpolantComputations, 163 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! [2024-06-28 03:42:45,249 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