./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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 04:22:22,828 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:22:22,867 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:22:22,870 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:22:22,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:22:22,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:22:22,885 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:22:22,885 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:22:22,886 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:22:22,886 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:22:22,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:22:22,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:22:22,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:22:22,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:22:22,887 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:22:22,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:22:22,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:22:22,888 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:22:22,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:22:22,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:22:22,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:22:22,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:22:22,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:22:22,889 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:22:22,890 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:22:22,890 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:22:22,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:22:22,890 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:22:22,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:22:22,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:22:22,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:22:22,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:22:22,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:22:22,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:22:22,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:22:22,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:22:22,892 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:22:22,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:22:22,893 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:22:22,893 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:22:22,893 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:22:22,893 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:22:22,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:22:22,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:22:23,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:22:23,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:22:23,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:22:23,086 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:22:23,086 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:22:23,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 04:22:23,212 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:22:23,212 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:22:23,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 04:22:24,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:22:24,447 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:22:24,447 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 04:22:24,457 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82148ed15/56e01d1ce90a4136bdb859c7edfadb50/FLAGa47be35de [2024-06-28 04:22:24,471 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82148ed15/56e01d1ce90a4136bdb859c7edfadb50 [2024-06-28 04:22:24,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:22:24,474 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:22:24,476 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:22:24,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:22:24,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:22:24,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:22:23" (1/2) ... [2024-06-28 04:22:24,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e75727f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:22:24, skipping insertion in model container [2024-06-28 04:22:24,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:22:23" (1/2) ... [2024-06-28 04:22:24,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1dcac275 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:22:24, skipping insertion in model container [2024-06-28 04:22:24,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:22:24" (2/2) ... [2024-06-28 04:22:24,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e75727f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:24, skipping insertion in model container [2024-06-28 04:22:24,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:22:24" (2/2) ... [2024-06-28 04:22:24,483 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:22:24,532 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:22:24,533 INFO L97 edCorrectnessWitness]: Location invariant before [L810-L810] ((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 04:22:24,533 INFO L97 edCorrectnessWitness]: Location invariant before [L811-L811] ((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 04:22:24,533 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:22:24,533 INFO L106 edCorrectnessWitness]: ghost_update [L808-L808] multithreaded = 1; [2024-06-28 04:22:24,569 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:22:24,889 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:22:24,900 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:22:25,020 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:22:25,068 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:22:25,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25 WrapperNode [2024-06-28 04:22:25,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:22:25,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:22:25,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:22:25,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:22:25,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25" (1/1) ... [2024-06-28 04:22:25,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25" (1/1) ... [2024-06-28 04:22:25,113 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 113 [2024-06-28 04:22:25,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:22:25,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:22:25,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:22:25,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:22:25,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25" (1/1) ... [2024-06-28 04:22:25,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25" (1/1) ... [2024-06-28 04:22:25,140 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25" (1/1) ... [2024-06-28 04:22:25,155 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 04:22:25,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25" (1/1) ... [2024-06-28 04:22:25,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25" (1/1) ... [2024-06-28 04:22:25,161 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25" (1/1) ... [2024-06-28 04:22:25,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25" (1/1) ... [2024-06-28 04:22:25,163 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25" (1/1) ... [2024-06-28 04:22:25,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25" (1/1) ... [2024-06-28 04:22:25,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:22:25,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:22:25,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:22:25,178 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:22:25,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25" (1/1) ... [2024-06-28 04:22:25,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:22:25,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:22:25,221 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 04:22:25,283 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 04:22:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:22:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:22:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:22:25,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:22:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:22:25,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:22:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:22:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:22:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:22:25,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:22:25,319 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 04:22:25,422 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:22:25,423 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:22:25,642 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:22:25,643 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:22:25,766 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:22:25,767 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:22:25,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:22:25 BoogieIcfgContainer [2024-06-28 04:22:25,767 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:22:25,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:22:25,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:22:25,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:22:25,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:22:23" (1/4) ... [2024-06-28 04:22:25,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bfe5c39 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:22:25, skipping insertion in model container [2024-06-28 04:22:25,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:22:24" (2/4) ... [2024-06-28 04:22:25,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bfe5c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:22:25, skipping insertion in model container [2024-06-28 04:22:25,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:25" (3/4) ... [2024-06-28 04:22:25,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bfe5c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:22:25, skipping insertion in model container [2024-06-28 04:22:25,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:22:25" (4/4) ... [2024-06-28 04:22:25,774 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 04:22:25,786 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:22:25,786 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 04:22:25,786 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:22:25,818 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:22:25,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 04:22:25,867 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-06-28 04:22:25,867 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:22:25,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:22:25,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 04:22:25,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 48 flow [2024-06-28 04:22:25,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:22:25,890 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;@2140062, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:22:25,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 04:22:25,894 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:22:25,894 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 04:22:25,894 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:22:25,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:25,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:22:25,896 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 04:22:25,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:25,900 INFO L85 PathProgramCache]: Analyzing trace with hash 325166542, now seen corresponding path program 1 times [2024-06-28 04:22:25,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:25,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228204002] [2024-06-28 04:22:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:25,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:26,589 INFO 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 04:22:26,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:26,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228204002] [2024-06-28 04:22:26,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228204002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:26,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:26,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:22:26,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226627022] [2024-06-28 04:22:26,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:26,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:22:26,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:26,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:22:26,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:22:26,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-28 04:22:26,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 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 04:22:26,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:26,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-28 04:22:26,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:26,785 INFO L124 PetriNetUnfolderBase]: 131/246 cut-off events. [2024-06-28 04:22:26,786 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 04:22:26,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 246 events. 131/246 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 855 event pairs, 79 based on Foata normal form. 3/243 useless extension candidates. Maximal degree in co-relation 495. Up to 231 conditions per place. [2024-06-28 04:22:26,789 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 04:22:26,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 117 flow [2024-06-28 04:22:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:22:26,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:22:26,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-28 04:22:26,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-06-28 04:22:26,800 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 54 transitions. [2024-06-28 04:22:26,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 117 flow [2024-06-28 04:22:26,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 04:22:26,804 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 67 flow [2024-06-28 04:22:26,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-06-28 04:22:26,809 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-28 04:22:26,809 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 67 flow [2024-06-28 04:22:26,809 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 04:22:26,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:26,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:26,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:22:26,810 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 04:22:26,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:26,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1046867617, now seen corresponding path program 1 times [2024-06-28 04:22:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:26,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204578817] [2024-06-28 04:22:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:26,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:27,281 INFO 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 04:22:27,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:27,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204578817] [2024-06-28 04:22:27,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204578817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:27,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:27,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 04:22:27,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013079512] [2024-06-28 04:22:27,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:27,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 04:22:27,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 04:22:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 04:22:27,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-28 04:22:27,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 67 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 04:22:27,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:27,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-28 04:22:27,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:27,416 INFO L124 PetriNetUnfolderBase]: 134/251 cut-off events. [2024-06-28 04:22:27,416 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-06-28 04:22:27,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 251 events. 134/251 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 867 event pairs, 53 based on Foata normal form. 4/254 useless extension candidates. Maximal degree in co-relation 580. Up to 227 conditions per place. [2024-06-28 04:22:27,421 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 28 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-28 04:22:27,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 170 flow [2024-06-28 04:22:27,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:22:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:22:27,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-28 04:22:27,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5948275862068966 [2024-06-28 04:22:27,425 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 67 flow. Second operand 4 states and 69 transitions. [2024-06-28 04:22:27,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 170 flow [2024-06-28 04:22:27,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:22:27,429 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 104 flow [2024-06-28 04:22:27,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, 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=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-28 04:22:27,430 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-06-28 04:22:27,430 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 104 flow [2024-06-28 04:22:27,430 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 04:22:27,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:27,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:27,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:22:27,431 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 04:22:27,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:27,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1906843397, now seen corresponding path program 1 times [2024-06-28 04:22:27,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:27,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343636268] [2024-06-28 04:22:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:27,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:27,823 INFO 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 04:22:27,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:27,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343636268] [2024-06-28 04:22:27,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343636268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:27,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:27,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 04:22:27,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815526188] [2024-06-28 04:22:27,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:27,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 04:22:27,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:27,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 04:22:27,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 04:22:27,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-28 04:22:27,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:27,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:27,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-28 04:22:27,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:27,938 INFO L124 PetriNetUnfolderBase]: 154/284 cut-off events. [2024-06-28 04:22:27,939 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-06-28 04:22:27,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 284 events. 154/284 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 957 event pairs, 58 based on Foata normal form. 2/285 useless extension candidates. Maximal degree in co-relation 761. Up to 258 conditions per place. [2024-06-28 04:22:27,941 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 35 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2024-06-28 04:22:27,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 239 flow [2024-06-28 04:22:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:22:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:22:27,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-28 04:22:27,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379310344827586 [2024-06-28 04:22:27,945 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 104 flow. Second operand 5 states and 78 transitions. [2024-06-28 04:22:27,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 239 flow [2024-06-28 04:22:27,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 45 transitions, 232 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 04:22:27,948 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 153 flow [2024-06-28 04:22:27,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-06-28 04:22:27,949 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 11 predicate places. [2024-06-28 04:22:27,950 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 153 flow [2024-06-28 04:22:27,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:27,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:27,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:27,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:22:27,950 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 04:22:27,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:27,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1654625140, now seen corresponding path program 1 times [2024-06-28 04:22:27,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:27,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29862163] [2024-06-28 04:22:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:27,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:28,499 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 04:22:28,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:28,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29862163] [2024-06-28 04:22:28,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29862163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:28,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:28,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:22:28,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276034508] [2024-06-28 04:22:28,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:28,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:22:28,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:28,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:22:28,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:22:28,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-28 04:22:28,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:28,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:28,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-28 04:22:28,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:28,631 INFO L124 PetriNetUnfolderBase]: 151/279 cut-off events. [2024-06-28 04:22:28,631 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2024-06-28 04:22:28,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 279 events. 151/279 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 939 event pairs, 40 based on Foata normal form. 2/280 useless extension candidates. Maximal degree in co-relation 833. Up to 244 conditions per place. [2024-06-28 04:22:28,640 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 39 selfloop transitions, 9 changer transitions 0/51 dead transitions. [2024-06-28 04:22:28,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 295 flow [2024-06-28 04:22:28,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:22:28,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:22:28,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-28 04:22:28,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-06-28 04:22:28,641 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 153 flow. Second operand 6 states and 92 transitions. [2024-06-28 04:22:28,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 295 flow [2024-06-28 04:22:28,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 04:22:28,644 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 188 flow [2024-06-28 04:22:28,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-06-28 04:22:28,644 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2024-06-28 04:22:28,644 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 188 flow [2024-06-28 04:22:28,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:28,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:28,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:28,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:22:28,645 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 04:22:28,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:28,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1474492860, now seen corresponding path program 1 times [2024-06-28 04:22:28,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:28,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761358764] [2024-06-28 04:22:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:29,276 INFO 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 04:22:29,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:29,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761358764] [2024-06-28 04:22:29,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761358764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:29,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:29,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:22:29,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26725977] [2024-06-28 04:22:29,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:29,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:22:29,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:29,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:22:29,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:22:29,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-28 04:22:29,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 188 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:29,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:29,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-28 04:22:29,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:29,444 INFO L124 PetriNetUnfolderBase]: 147/271 cut-off events. [2024-06-28 04:22:29,444 INFO L125 PetriNetUnfolderBase]: For 429/429 co-relation queries the response was YES. [2024-06-28 04:22:29,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 271 events. 147/271 cut-off events. For 429/429 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 882 event pairs, 21 based on Foata normal form. 4/274 useless extension candidates. Maximal degree in co-relation 883. Up to 218 conditions per place. [2024-06-28 04:22:29,446 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 39 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2024-06-28 04:22:29,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 320 flow [2024-06-28 04:22:29,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-28 04:22:29,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975369458128079 [2024-06-28 04:22:29,448 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 188 flow. Second operand 7 states and 101 transitions. [2024-06-28 04:22:29,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 320 flow [2024-06-28 04:22:29,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 303 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:29,453 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 185 flow [2024-06-28 04:22:29,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=185, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-06-28 04:22:29,472 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 19 predicate places. [2024-06-28 04:22:29,473 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 185 flow [2024-06-28 04:22:29,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:29,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:29,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:29,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:22:29,477 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 04:22:29,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash 343315650, now seen corresponding path program 1 times [2024-06-28 04:22:29,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:29,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730624348] [2024-06-28 04:22:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:29,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:29,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:29,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730624348] [2024-06-28 04:22:29,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730624348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:29,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:29,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:29,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503067111] [2024-06-28 04:22:29,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:29,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:30,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:30,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:30,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:30,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 185 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 04:22:30,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:30,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:30,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:30,194 INFO L124 PetriNetUnfolderBase]: 166/302 cut-off events. [2024-06-28 04:22:30,194 INFO L125 PetriNetUnfolderBase]: For 569/569 co-relation queries the response was YES. [2024-06-28 04:22:30,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 302 events. 166/302 cut-off events. For 569/569 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1019 event pairs, 39 based on Foata normal form. 3/304 useless extension candidates. Maximal degree in co-relation 1016. Up to 235 conditions per place. [2024-06-28 04:22:30,197 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 42 selfloop transitions, 14 changer transitions 0/58 dead transitions. [2024-06-28 04:22:30,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 379 flow [2024-06-28 04:22:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-28 04:22:30,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45320197044334976 [2024-06-28 04:22:30,199 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 185 flow. Second operand 7 states and 92 transitions. [2024-06-28 04:22:30,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 379 flow [2024-06-28 04:22:30,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 352 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 04:22:30,202 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 215 flow [2024-06-28 04:22:30,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=215, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-28 04:22:30,204 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 20 predicate places. [2024-06-28 04:22:30,204 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 215 flow [2024-06-28 04:22:30,205 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 04:22:30,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:30,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:30,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:22:30,205 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 04:22:30,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:30,206 INFO L85 PathProgramCache]: Analyzing trace with hash -395261642, now seen corresponding path program 2 times [2024-06-28 04:22:30,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:30,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267409146] [2024-06-28 04:22:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:30,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:30,712 INFO 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 04:22:30,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:30,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267409146] [2024-06-28 04:22:30,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267409146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:30,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:30,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:30,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953028484] [2024-06-28 04:22:30,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:30,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:30,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:30,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:30,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:30,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:30,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 215 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 04:22:30,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:30,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:30,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:30,963 INFO L124 PetriNetUnfolderBase]: 184/332 cut-off events. [2024-06-28 04:22:30,963 INFO L125 PetriNetUnfolderBase]: For 842/842 co-relation queries the response was YES. [2024-06-28 04:22:30,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 332 events. 184/332 cut-off events. For 842/842 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1174 event pairs, 40 based on Foata normal form. 3/334 useless extension candidates. Maximal degree in co-relation 1186. Up to 281 conditions per place. [2024-06-28 04:22:30,965 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 43 selfloop transitions, 13 changer transitions 0/58 dead transitions. [2024-06-28 04:22:30,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 397 flow [2024-06-28 04:22:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-28 04:22:30,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:22:30,967 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 215 flow. Second operand 7 states and 87 transitions. [2024-06-28 04:22:30,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 397 flow [2024-06-28 04:22:30,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 378 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 04:22:30,969 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 259 flow [2024-06-28 04:22:30,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-06-28 04:22:30,970 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2024-06-28 04:22:30,970 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 259 flow [2024-06-28 04:22:30,970 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 04:22:30,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:30,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:30,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:22:30,970 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 04:22:30,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:30,971 INFO L85 PathProgramCache]: Analyzing trace with hash 637176532, now seen corresponding path program 3 times [2024-06-28 04:22:30,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:30,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740002113] [2024-06-28 04:22:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:30,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:31,424 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 04:22:31,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:31,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740002113] [2024-06-28 04:22:31,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740002113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:31,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:31,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:31,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118214848] [2024-06-28 04:22:31,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:31,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:31,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:31,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:31,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:31,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:31,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 259 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 04:22:31,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:31,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:31,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:31,680 INFO L124 PetriNetUnfolderBase]: 178/326 cut-off events. [2024-06-28 04:22:31,680 INFO L125 PetriNetUnfolderBase]: For 1087/1087 co-relation queries the response was YES. [2024-06-28 04:22:31,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 326 events. 178/326 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1161 event pairs, 82 based on Foata normal form. 3/328 useless extension candidates. Maximal degree in co-relation 1207. Up to 290 conditions per place. [2024-06-28 04:22:31,683 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 40 selfloop transitions, 12 changer transitions 0/54 dead transitions. [2024-06-28 04:22:31,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 405 flow [2024-06-28 04:22:31,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:31,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 04:22:31,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:22:31,684 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 259 flow. Second operand 8 states and 87 transitions. [2024-06-28 04:22:31,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 405 flow [2024-06-28 04:22:31,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 370 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:31,687 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 274 flow [2024-06-28 04:22:31,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=274, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-06-28 04:22:31,688 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2024-06-28 04:22:31,688 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 274 flow [2024-06-28 04:22:31,688 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 04:22:31,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:31,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:31,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:22:31,689 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 04:22:31,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:31,689 INFO L85 PathProgramCache]: Analyzing trace with hash -217892786, now seen corresponding path program 1 times [2024-06-28 04:22:31,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:31,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779180285] [2024-06-28 04:22:31,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:31,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:32,267 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 04:22:32,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:32,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779180285] [2024-06-28 04:22:32,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779180285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:32,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:32,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:32,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695512198] [2024-06-28 04:22:32,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:32,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:32,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:32,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:32,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:32,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:32,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 274 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 04:22:32,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:32,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:32,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:32,472 INFO L124 PetriNetUnfolderBase]: 179/326 cut-off events. [2024-06-28 04:22:32,473 INFO L125 PetriNetUnfolderBase]: For 1136/1138 co-relation queries the response was YES. [2024-06-28 04:22:32,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 326 events. 179/326 cut-off events. For 1136/1138 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1157 event pairs, 35 based on Foata normal form. 4/329 useless extension candidates. Maximal degree in co-relation 1225. Up to 278 conditions per place. [2024-06-28 04:22:32,475 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 41 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2024-06-28 04:22:32,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 430 flow [2024-06-28 04:22:32,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:22:32,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:22:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-06-28 04:22:32,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45517241379310347 [2024-06-28 04:22:32,476 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 274 flow. Second operand 5 states and 66 transitions. [2024-06-28 04:22:32,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 430 flow [2024-06-28 04:22:32,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 378 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 04:22:32,479 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 297 flow [2024-06-28 04:22:32,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-28 04:22:32,479 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 27 predicate places. [2024-06-28 04:22:32,479 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 297 flow [2024-06-28 04:22:32,480 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 04:22:32,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:32,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:32,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:22:32,480 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 04:22:32,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:32,481 INFO L85 PathProgramCache]: Analyzing trace with hash 637422796, now seen corresponding path program 1 times [2024-06-28 04:22:32,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:32,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353624130] [2024-06-28 04:22:32,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:32,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:33,224 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 04:22:33,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:33,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353624130] [2024-06-28 04:22:33,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353624130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:33,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:33,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:33,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190600676] [2024-06-28 04:22:33,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:33,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:33,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:33,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:33,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:33,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:33,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 297 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 04:22:33,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:33,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:33,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:33,551 INFO L124 PetriNetUnfolderBase]: 176/323 cut-off events. [2024-06-28 04:22:33,551 INFO L125 PetriNetUnfolderBase]: For 1272/1272 co-relation queries the response was YES. [2024-06-28 04:22:33,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 323 events. 176/323 cut-off events. For 1272/1272 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1131 event pairs, 80 based on Foata normal form. 2/324 useless extension candidates. Maximal degree in co-relation 1270. Up to 297 conditions per place. [2024-06-28 04:22:33,554 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 41 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2024-06-28 04:22:33,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 419 flow [2024-06-28 04:22:33,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:33,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-28 04:22:33,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3577586206896552 [2024-06-28 04:22:33,555 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 297 flow. Second operand 8 states and 83 transitions. [2024-06-28 04:22:33,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 419 flow [2024-06-28 04:22:33,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 400 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 04:22:33,559 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 306 flow [2024-06-28 04:22:33,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=306, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-06-28 04:22:33,561 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 33 predicate places. [2024-06-28 04:22:33,561 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 306 flow [2024-06-28 04:22:33,561 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 04:22:33,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:33,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:33,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:22:33,562 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 04:22:33,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:33,562 INFO L85 PathProgramCache]: Analyzing trace with hash -507456203, now seen corresponding path program 1 times [2024-06-28 04:22:33,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:33,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786180164] [2024-06-28 04:22:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:33,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:34,181 INFO 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 04:22:34,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:34,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786180164] [2024-06-28 04:22:34,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786180164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:34,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:34,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:34,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175115278] [2024-06-28 04:22:34,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:34,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:34,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:34,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:34,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:34,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:34,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 306 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 04:22:34,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:34,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:34,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:34,469 INFO L124 PetriNetUnfolderBase]: 202/366 cut-off events. [2024-06-28 04:22:34,469 INFO L125 PetriNetUnfolderBase]: For 1362/1364 co-relation queries the response was YES. [2024-06-28 04:22:34,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 366 events. 202/366 cut-off events. For 1362/1364 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1349 event pairs, 34 based on Foata normal form. 5/370 useless extension candidates. Maximal degree in co-relation 1389. Up to 291 conditions per place. [2024-06-28 04:22:34,471 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 57 selfloop transitions, 25 changer transitions 0/84 dead transitions. [2024-06-28 04:22:34,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 84 transitions, 618 flow [2024-06-28 04:22:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:22:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:22:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 04:22:34,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2024-06-28 04:22:34,473 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 306 flow. Second operand 10 states and 118 transitions. [2024-06-28 04:22:34,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 84 transitions, 618 flow [2024-06-28 04:22:34,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 84 transitions, 587 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 04:22:34,476 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 481 flow [2024-06-28 04:22:34,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=481, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2024-06-28 04:22:34,477 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 42 predicate places. [2024-06-28 04:22:34,477 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 481 flow [2024-06-28 04:22:34,477 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 04:22:34,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:34,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:34,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:22:34,478 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 04:22:34,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:34,478 INFO L85 PathProgramCache]: Analyzing trace with hash 713803611, now seen corresponding path program 2 times [2024-06-28 04:22:34,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:34,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290201470] [2024-06-28 04:22:34,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:34,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:35,132 INFO 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 04:22:35,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:35,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290201470] [2024-06-28 04:22:35,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290201470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:35,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:35,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:35,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663404220] [2024-06-28 04:22:35,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:35,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:35,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:35,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:35,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:35,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:35,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 481 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 04:22:35,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:35,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:35,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:35,546 INFO L124 PetriNetUnfolderBase]: 265/474 cut-off events. [2024-06-28 04:22:35,546 INFO L125 PetriNetUnfolderBase]: For 2059/2059 co-relation queries the response was YES. [2024-06-28 04:22:35,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 474 events. 265/474 cut-off events. For 2059/2059 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1899 event pairs, 64 based on Foata normal form. 3/476 useless extension candidates. Maximal degree in co-relation 2059. Up to 343 conditions per place. [2024-06-28 04:22:35,549 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 72 selfloop transitions, 37 changer transitions 0/111 dead transitions. [2024-06-28 04:22:35,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 111 transitions, 969 flow [2024-06-28 04:22:35,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:22:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:22:35,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 04:22:35,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4379310344827586 [2024-06-28 04:22:35,551 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 481 flow. Second operand 10 states and 127 transitions. [2024-06-28 04:22:35,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 111 transitions, 969 flow [2024-06-28 04:22:35,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 111 transitions, 927 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 04:22:35,557 INFO L231 Difference]: Finished difference. Result has 82 places, 89 transitions, 776 flow [2024-06-28 04:22:35,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=776, PETRI_PLACES=82, PETRI_TRANSITIONS=89} [2024-06-28 04:22:35,558 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 54 predicate places. [2024-06-28 04:22:35,559 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 89 transitions, 776 flow [2024-06-28 04:22:35,559 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 04:22:35,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:35,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:35,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:22:35,559 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 04:22:35,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:35,560 INFO L85 PathProgramCache]: Analyzing trace with hash 221559135, now seen corresponding path program 3 times [2024-06-28 04:22:35,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:35,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411505939] [2024-06-28 04:22:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:35,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:35,983 INFO 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 04:22:35,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:35,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411505939] [2024-06-28 04:22:35,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411505939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:35,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:35,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:35,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126285166] [2024-06-28 04:22:35,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:35,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:35,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:35,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:36,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:36,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 89 transitions, 776 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 04:22:36,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:36,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:36,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:36,262 INFO L124 PetriNetUnfolderBase]: 272/487 cut-off events. [2024-06-28 04:22:36,262 INFO L125 PetriNetUnfolderBase]: For 2681/2681 co-relation queries the response was YES. [2024-06-28 04:22:36,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2407 conditions, 487 events. 272/487 cut-off events. For 2681/2681 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1948 event pairs, 61 based on Foata normal form. 1/487 useless extension candidates. Maximal degree in co-relation 2366. Up to 368 conditions per place. [2024-06-28 04:22:36,265 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 76 selfloop transitions, 35 changer transitions 0/113 dead transitions. [2024-06-28 04:22:36,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 113 transitions, 1143 flow [2024-06-28 04:22:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:36,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-28 04:22:36,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267241379310345 [2024-06-28 04:22:36,267 INFO L175 Difference]: Start difference. First operand has 82 places, 89 transitions, 776 flow. Second operand 8 states and 99 transitions. [2024-06-28 04:22:36,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 113 transitions, 1143 flow [2024-06-28 04:22:36,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 113 transitions, 1104 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 04:22:36,274 INFO L231 Difference]: Finished difference. Result has 90 places, 99 transitions, 932 flow [2024-06-28 04:22:36,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=932, PETRI_PLACES=90, PETRI_TRANSITIONS=99} [2024-06-28 04:22:36,275 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 62 predicate places. [2024-06-28 04:22:36,275 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 99 transitions, 932 flow [2024-06-28 04:22:36,275 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 04:22:36,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:36,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:36,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:22:36,275 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 04:22:36,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash -873844853, now seen corresponding path program 4 times [2024-06-28 04:22:36,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:36,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346402657] [2024-06-28 04:22:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:36,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:37,075 INFO 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 04:22:37,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:37,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346402657] [2024-06-28 04:22:37,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346402657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:37,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:37,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:37,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898817385] [2024-06-28 04:22:37,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:37,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:37,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:37,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:37,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:37,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 99 transitions, 932 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 04:22:37,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:37,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:37,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:37,549 INFO L124 PetriNetUnfolderBase]: 266/478 cut-off events. [2024-06-28 04:22:37,549 INFO L125 PetriNetUnfolderBase]: For 3190/3190 co-relation queries the response was YES. [2024-06-28 04:22:37,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2499 conditions, 478 events. 266/478 cut-off events. For 3190/3190 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1914 event pairs, 68 based on Foata normal form. 3/480 useless extension candidates. Maximal degree in co-relation 2454. Up to 411 conditions per place. [2024-06-28 04:22:37,552 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 90 selfloop transitions, 23 changer transitions 0/115 dead transitions. [2024-06-28 04:22:37,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 115 transitions, 1212 flow [2024-06-28 04:22:37,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 04:22:37,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061302681992337 [2024-06-28 04:22:37,553 INFO L175 Difference]: Start difference. First operand has 90 places, 99 transitions, 932 flow. Second operand 9 states and 106 transitions. [2024-06-28 04:22:37,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 115 transitions, 1212 flow [2024-06-28 04:22:37,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 115 transitions, 1177 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 04:22:37,562 INFO L231 Difference]: Finished difference. Result has 97 places, 100 transitions, 960 flow [2024-06-28 04:22:37,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=960, PETRI_PLACES=97, PETRI_TRANSITIONS=100} [2024-06-28 04:22:37,562 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 69 predicate places. [2024-06-28 04:22:37,562 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 100 transitions, 960 flow [2024-06-28 04:22:37,562 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 04:22:37,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:37,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:37,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:22:37,563 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 04:22:37,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:37,563 INFO L85 PathProgramCache]: Analyzing trace with hash 627982713, now seen corresponding path program 5 times [2024-06-28 04:22:37,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:37,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159518540] [2024-06-28 04:22:37,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:37,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:38,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:38,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159518540] [2024-06-28 04:22:38,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159518540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:38,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:38,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:38,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503303523] [2024-06-28 04:22:38,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:38,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:38,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:38,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:38,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:38,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:38,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 100 transitions, 960 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 04:22:38,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:38,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:38,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:38,377 INFO L124 PetriNetUnfolderBase]: 275/492 cut-off events. [2024-06-28 04:22:38,377 INFO L125 PetriNetUnfolderBase]: For 3334/3334 co-relation queries the response was YES. [2024-06-28 04:22:38,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 492 events. 275/492 cut-off events. For 3334/3334 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1995 event pairs, 60 based on Foata normal form. 1/492 useless extension candidates. Maximal degree in co-relation 2599. Up to 372 conditions per place. [2024-06-28 04:22:38,381 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 70 selfloop transitions, 49 changer transitions 0/121 dead transitions. [2024-06-28 04:22:38,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 121 transitions, 1324 flow [2024-06-28 04:22:38,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:38,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:38,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-28 04:22:38,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267241379310345 [2024-06-28 04:22:38,382 INFO L175 Difference]: Start difference. First operand has 97 places, 100 transitions, 960 flow. Second operand 8 states and 99 transitions. [2024-06-28 04:22:38,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 121 transitions, 1324 flow [2024-06-28 04:22:38,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 121 transitions, 1284 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:38,392 INFO L231 Difference]: Finished difference. Result has 102 places, 107 transitions, 1115 flow [2024-06-28 04:22:38,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1115, PETRI_PLACES=102, PETRI_TRANSITIONS=107} [2024-06-28 04:22:38,392 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 74 predicate places. [2024-06-28 04:22:38,392 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 107 transitions, 1115 flow [2024-06-28 04:22:38,392 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 04:22:38,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:38,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:38,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:22:38,393 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 04:22:38,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:38,393 INFO L85 PathProgramCache]: Analyzing trace with hash 628072923, now seen corresponding path program 6 times [2024-06-28 04:22:38,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:38,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605586555] [2024-06-28 04:22:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:38,959 INFO 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 04:22:38,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:38,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605586555] [2024-06-28 04:22:38,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605586555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:38,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:38,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:38,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321377472] [2024-06-28 04:22:38,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:38,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:38,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:38,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:38,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:39,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:39,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 107 transitions, 1115 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 04:22:39,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:39,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:39,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:39,183 INFO L124 PetriNetUnfolderBase]: 278/497 cut-off events. [2024-06-28 04:22:39,184 INFO L125 PetriNetUnfolderBase]: For 3727/3727 co-relation queries the response was YES. [2024-06-28 04:22:39,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 497 events. 278/497 cut-off events. For 3727/3727 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2018 event pairs, 61 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 2780. Up to 418 conditions per place. [2024-06-28 04:22:39,188 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 84 selfloop transitions, 36 changer transitions 0/122 dead transitions. [2024-06-28 04:22:39,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 122 transitions, 1434 flow [2024-06-28 04:22:39,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:39,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 04:22:39,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4051724137931034 [2024-06-28 04:22:39,190 INFO L175 Difference]: Start difference. First operand has 102 places, 107 transitions, 1115 flow. Second operand 8 states and 94 transitions. [2024-06-28 04:22:39,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 122 transitions, 1434 flow [2024-06-28 04:22:39,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 122 transitions, 1384 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:39,202 INFO L231 Difference]: Finished difference. Result has 106 places, 111 transitions, 1203 flow [2024-06-28 04:22:39,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1203, PETRI_PLACES=106, PETRI_TRANSITIONS=111} [2024-06-28 04:22:39,203 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2024-06-28 04:22:39,203 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 111 transitions, 1203 flow [2024-06-28 04:22:39,203 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 04:22:39,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:39,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:39,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:22:39,204 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 04:22:39,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:39,204 INFO L85 PathProgramCache]: Analyzing trace with hash 631791993, now seen corresponding path program 7 times [2024-06-28 04:22:39,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:39,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567691816] [2024-06-28 04:22:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:39,746 INFO 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 04:22:39,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567691816] [2024-06-28 04:22:39,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567691816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:39,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:39,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:39,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619724292] [2024-06-28 04:22:39,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:39,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:39,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:39,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:39,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:39,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:39,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 111 transitions, 1203 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 04:22:39,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:39,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:39,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:40,048 INFO L124 PetriNetUnfolderBase]: 281/502 cut-off events. [2024-06-28 04:22:40,048 INFO L125 PetriNetUnfolderBase]: For 4174/4174 co-relation queries the response was YES. [2024-06-28 04:22:40,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 502 events. 281/502 cut-off events. For 4174/4174 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2040 event pairs, 69 based on Foata normal form. 1/502 useless extension candidates. Maximal degree in co-relation 2853. Up to 454 conditions per place. [2024-06-28 04:22:40,052 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 98 selfloop transitions, 24 changer transitions 0/124 dead transitions. [2024-06-28 04:22:40,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 124 transitions, 1522 flow [2024-06-28 04:22:40,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 04:22:40,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3879310344827586 [2024-06-28 04:22:40,053 INFO L175 Difference]: Start difference. First operand has 106 places, 111 transitions, 1203 flow. Second operand 8 states and 90 transitions. [2024-06-28 04:22:40,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 124 transitions, 1522 flow [2024-06-28 04:22:40,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 124 transitions, 1459 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:40,066 INFO L231 Difference]: Finished difference. Result has 110 places, 115 transitions, 1261 flow [2024-06-28 04:22:40,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1261, PETRI_PLACES=110, PETRI_TRANSITIONS=115} [2024-06-28 04:22:40,066 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 82 predicate places. [2024-06-28 04:22:40,066 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 115 transitions, 1261 flow [2024-06-28 04:22:40,067 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 04:22:40,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:40,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:40,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:22:40,067 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 04:22:40,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:40,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1715005596, now seen corresponding path program 1 times [2024-06-28 04:22:40,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:40,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637722514] [2024-06-28 04:22:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:40,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:40,616 INFO 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 04:22:40,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:40,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637722514] [2024-06-28 04:22:40,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637722514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:40,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:40,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:40,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110067361] [2024-06-28 04:22:40,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:40,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:40,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:40,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:40,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:40,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:40,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 115 transitions, 1261 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 04:22:40,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:40,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:40,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:40,928 INFO L124 PetriNetUnfolderBase]: 278/498 cut-off events. [2024-06-28 04:22:40,929 INFO L125 PetriNetUnfolderBase]: For 4310/4310 co-relation queries the response was YES. [2024-06-28 04:22:40,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2886 conditions, 498 events. 278/498 cut-off events. For 4310/4310 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2030 event pairs, 59 based on Foata normal form. 2/499 useless extension candidates. Maximal degree in co-relation 2833. Up to 406 conditions per place. [2024-06-28 04:22:40,933 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 99 selfloop transitions, 30 changer transitions 0/131 dead transitions. [2024-06-28 04:22:40,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 131 transitions, 1619 flow [2024-06-28 04:22:40,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:22:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:22:40,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-28 04:22:40,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2024-06-28 04:22:40,935 INFO L175 Difference]: Start difference. First operand has 110 places, 115 transitions, 1261 flow. Second operand 6 states and 83 transitions. [2024-06-28 04:22:40,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 131 transitions, 1619 flow [2024-06-28 04:22:40,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 131 transitions, 1577 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:40,947 INFO L231 Difference]: Finished difference. Result has 113 places, 119 transitions, 1354 flow [2024-06-28 04:22:40,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1354, PETRI_PLACES=113, PETRI_TRANSITIONS=119} [2024-06-28 04:22:40,948 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 85 predicate places. [2024-06-28 04:22:40,948 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 119 transitions, 1354 flow [2024-06-28 04:22:40,948 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 04:22:40,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:40,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:40,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:22:40,949 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 04:22:40,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:40,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1714738469, now seen corresponding path program 1 times [2024-06-28 04:22:40,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:40,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638490082] [2024-06-28 04:22:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:40,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:41,652 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 04:22:41,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:41,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638490082] [2024-06-28 04:22:41,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638490082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:41,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:41,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:41,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243820052] [2024-06-28 04:22:41,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:41,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:41,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:41,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:41,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:41,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:41,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 119 transitions, 1354 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 04:22:41,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:41,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:41,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:41,907 INFO L124 PetriNetUnfolderBase]: 275/493 cut-off events. [2024-06-28 04:22:41,907 INFO L125 PetriNetUnfolderBase]: For 4701/4701 co-relation queries the response was YES. [2024-06-28 04:22:41,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2977 conditions, 493 events. 275/493 cut-off events. For 4701/4701 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2010 event pairs, 67 based on Foata normal form. 1/493 useless extension candidates. Maximal degree in co-relation 2922. Up to 424 conditions per place. [2024-06-28 04:22:41,911 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 101 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2024-06-28 04:22:41,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 126 transitions, 1622 flow [2024-06-28 04:22:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:22:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:22:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-06-28 04:22:41,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46206896551724136 [2024-06-28 04:22:41,912 INFO L175 Difference]: Start difference. First operand has 113 places, 119 transitions, 1354 flow. Second operand 5 states and 67 transitions. [2024-06-28 04:22:41,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 126 transitions, 1622 flow [2024-06-28 04:22:41,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 126 transitions, 1592 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 04:22:41,924 INFO L231 Difference]: Finished difference. Result has 115 places, 119 transitions, 1392 flow [2024-06-28 04:22:41,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1392, PETRI_PLACES=115, PETRI_TRANSITIONS=119} [2024-06-28 04:22:41,925 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 87 predicate places. [2024-06-28 04:22:41,925 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 119 transitions, 1392 flow [2024-06-28 04:22:41,925 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 04:22:41,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:41,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:41,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:22:41,925 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 04:22:41,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1722362981, now seen corresponding path program 8 times [2024-06-28 04:22:41,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:41,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142454707] [2024-06-28 04:22:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:41,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:42,508 INFO 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 04:22:42,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:42,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142454707] [2024-06-28 04:22:42,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142454707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:42,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:42,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:42,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778794096] [2024-06-28 04:22:42,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:42,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:42,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:42,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:42,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:42,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 119 transitions, 1392 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 04:22:42,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:42,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:42,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:42,771 INFO L124 PetriNetUnfolderBase]: 273/490 cut-off events. [2024-06-28 04:22:42,771 INFO L125 PetriNetUnfolderBase]: For 4371/4371 co-relation queries the response was YES. [2024-06-28 04:22:42,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 490 events. 273/490 cut-off events. For 4371/4371 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1989 event pairs, 54 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 2941. Up to 417 conditions per place. [2024-06-28 04:22:42,775 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 99 selfloop transitions, 30 changer transitions 0/131 dead transitions. [2024-06-28 04:22:42,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 131 transitions, 1682 flow [2024-06-28 04:22:42,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-28 04:22:42,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43842364532019706 [2024-06-28 04:22:42,776 INFO L175 Difference]: Start difference. First operand has 115 places, 119 transitions, 1392 flow. Second operand 7 states and 89 transitions. [2024-06-28 04:22:42,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 131 transitions, 1682 flow [2024-06-28 04:22:42,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 131 transitions, 1620 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:42,791 INFO L231 Difference]: Finished difference. Result has 117 places, 119 transitions, 1406 flow [2024-06-28 04:22:42,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1406, PETRI_PLACES=117, PETRI_TRANSITIONS=119} [2024-06-28 04:22:42,792 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 89 predicate places. [2024-06-28 04:22:42,792 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 119 transitions, 1406 flow [2024-06-28 04:22:42,792 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 04:22:42,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:42,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:42,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:22:42,792 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 04:22:42,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1486130521, now seen corresponding path program 1 times [2024-06-28 04:22:42,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:42,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403908412] [2024-06-28 04:22:42,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:42,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:43,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:43,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403908412] [2024-06-28 04:22:43,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403908412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:43,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:43,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:43,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052646662] [2024-06-28 04:22:43,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:43,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:43,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:43,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:43,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:43,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:43,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 1406 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 04:22:43,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:43,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:43,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:43,477 INFO L124 PetriNetUnfolderBase]: 282/509 cut-off events. [2024-06-28 04:22:43,477 INFO L125 PetriNetUnfolderBase]: For 4770/4770 co-relation queries the response was YES. [2024-06-28 04:22:43,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 509 events. 282/509 cut-off events. For 4770/4770 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2132 event pairs, 36 based on Foata normal form. 2/510 useless extension candidates. Maximal degree in co-relation 3033. Up to 315 conditions per place. [2024-06-28 04:22:43,482 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 88 selfloop transitions, 48 changer transitions 0/138 dead transitions. [2024-06-28 04:22:43,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 138 transitions, 1766 flow [2024-06-28 04:22:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:43,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 04:22:43,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40229885057471265 [2024-06-28 04:22:43,483 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 1406 flow. Second operand 9 states and 105 transitions. [2024-06-28 04:22:43,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 138 transitions, 1766 flow [2024-06-28 04:22:43,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 138 transitions, 1669 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:43,497 INFO L231 Difference]: Finished difference. Result has 120 places, 121 transitions, 1425 flow [2024-06-28 04:22:43,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1425, PETRI_PLACES=120, PETRI_TRANSITIONS=121} [2024-06-28 04:22:43,497 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 92 predicate places. [2024-06-28 04:22:43,497 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 121 transitions, 1425 flow [2024-06-28 04:22:43,497 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 04:22:43,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:43,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:43,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:22:43,498 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 04:22:43,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash -400255615, now seen corresponding path program 2 times [2024-06-28 04:22:43,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:43,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640319376] [2024-06-28 04:22:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:43,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:43,972 INFO 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 04:22:43,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:43,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640319376] [2024-06-28 04:22:43,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640319376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:43,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:43,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:43,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460522624] [2024-06-28 04:22:43,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:43,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:43,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:43,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:44,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:44,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 121 transitions, 1425 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 04:22:44,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:44,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:44,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:44,273 INFO L124 PetriNetUnfolderBase]: 298/541 cut-off events. [2024-06-28 04:22:44,274 INFO L125 PetriNetUnfolderBase]: For 5612/5612 co-relation queries the response was YES. [2024-06-28 04:22:44,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3279 conditions, 541 events. 298/541 cut-off events. For 5612/5612 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2345 event pairs, 60 based on Foata normal form. 2/542 useless extension candidates. Maximal degree in co-relation 3222. Up to 386 conditions per place. [2024-06-28 04:22:44,278 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 90 selfloop transitions, 49 changer transitions 0/141 dead transitions. [2024-06-28 04:22:44,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 141 transitions, 1809 flow [2024-06-28 04:22:44,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:44,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 04:22:44,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421455938697318 [2024-06-28 04:22:44,280 INFO L175 Difference]: Start difference. First operand has 120 places, 121 transitions, 1425 flow. Second operand 9 states and 110 transitions. [2024-06-28 04:22:44,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 141 transitions, 1809 flow [2024-06-28 04:22:44,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 141 transitions, 1696 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 04:22:44,295 INFO L231 Difference]: Finished difference. Result has 124 places, 124 transitions, 1451 flow [2024-06-28 04:22:44,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1451, PETRI_PLACES=124, PETRI_TRANSITIONS=124} [2024-06-28 04:22:44,295 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 96 predicate places. [2024-06-28 04:22:44,296 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 124 transitions, 1451 flow [2024-06-28 04:22:44,296 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 04:22:44,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:44,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:44,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:22:44,296 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 04:22:44,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash -372489535, now seen corresponding path program 3 times [2024-06-28 04:22:44,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:44,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76608169] [2024-06-28 04:22:44,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:44,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:44,778 INFO 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 04:22:44,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:44,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76608169] [2024-06-28 04:22:44,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76608169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:44,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:44,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:44,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672829647] [2024-06-28 04:22:44,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:44,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:44,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:44,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:44,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:44,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 124 transitions, 1451 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 04:22:44,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:44,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:44,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:45,145 INFO L124 PetriNetUnfolderBase]: 295/536 cut-off events. [2024-06-28 04:22:45,146 INFO L125 PetriNetUnfolderBase]: For 5550/5550 co-relation queries the response was YES. [2024-06-28 04:22:45,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3231 conditions, 536 events. 295/536 cut-off events. For 5550/5550 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2314 event pairs, 57 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 3173. Up to 405 conditions per place. [2024-06-28 04:22:45,150 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 86 selfloop transitions, 50 changer transitions 0/138 dead transitions. [2024-06-28 04:22:45,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 138 transitions, 1759 flow [2024-06-28 04:22:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 04:22:45,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099616858237548 [2024-06-28 04:22:45,153 INFO L175 Difference]: Start difference. First operand has 124 places, 124 transitions, 1451 flow. Second operand 9 states and 107 transitions. [2024-06-28 04:22:45,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 138 transitions, 1759 flow [2024-06-28 04:22:45,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 138 transitions, 1700 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:45,168 INFO L231 Difference]: Finished difference. Result has 128 places, 124 transitions, 1498 flow [2024-06-28 04:22:45,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1498, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2024-06-28 04:22:45,169 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 100 predicate places. [2024-06-28 04:22:45,169 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 1498 flow [2024-06-28 04:22:45,169 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 04:22:45,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:45,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:45,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:22:45,170 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 04:22:45,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:45,170 INFO L85 PathProgramCache]: Analyzing trace with hash -400195041, now seen corresponding path program 1 times [2024-06-28 04:22:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:45,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276137520] [2024-06-28 04:22:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:45,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:45,914 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 04:22:45,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:45,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276137520] [2024-06-28 04:22:45,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276137520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:45,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:45,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:45,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217183638] [2024-06-28 04:22:45,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:45,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:45,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:45,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:45,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:45,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 1498 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 04:22:45,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:45,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:45,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:46,319 INFO L124 PetriNetUnfolderBase]: 301/546 cut-off events. [2024-06-28 04:22:46,319 INFO L125 PetriNetUnfolderBase]: For 5998/5998 co-relation queries the response was YES. [2024-06-28 04:22:46,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3385 conditions, 546 events. 301/546 cut-off events. For 5998/5998 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2363 event pairs, 51 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 3325. Up to 263 conditions per place. [2024-06-28 04:22:46,329 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 74 selfloop transitions, 73 changer transitions 0/149 dead transitions. [2024-06-28 04:22:46,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 149 transitions, 1940 flow [2024-06-28 04:22:46,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:22:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:22:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 04:22:46,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4379310344827586 [2024-06-28 04:22:46,333 INFO L175 Difference]: Start difference. First operand has 128 places, 124 transitions, 1498 flow. Second operand 10 states and 127 transitions. [2024-06-28 04:22:46,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 149 transitions, 1940 flow [2024-06-28 04:22:46,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 149 transitions, 1844 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:46,352 INFO L231 Difference]: Finished difference. Result has 131 places, 128 transitions, 1605 flow [2024-06-28 04:22:46,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1605, PETRI_PLACES=131, PETRI_TRANSITIONS=128} [2024-06-28 04:22:46,352 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 103 predicate places. [2024-06-28 04:22:46,353 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 128 transitions, 1605 flow [2024-06-28 04:22:46,353 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 04:22:46,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:46,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:46,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:22:46,353 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 04:22:46,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:46,354 INFO L85 PathProgramCache]: Analyzing trace with hash 671781121, now seen corresponding path program 2 times [2024-06-28 04:22:46,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:46,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650196305] [2024-06-28 04:22:46,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:46,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:47,081 INFO 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 04:22:47,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:47,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650196305] [2024-06-28 04:22:47,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650196305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:47,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:47,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:47,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047660387] [2024-06-28 04:22:47,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:47,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:47,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:47,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:47,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:47,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:47,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 128 transitions, 1605 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 04:22:47,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:47,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:47,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:47,586 INFO L124 PetriNetUnfolderBase]: 307/556 cut-off events. [2024-06-28 04:22:47,586 INFO L125 PetriNetUnfolderBase]: For 6713/6713 co-relation queries the response was YES. [2024-06-28 04:22:47,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3569 conditions, 556 events. 307/556 cut-off events. For 6713/6713 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2422 event pairs, 61 based on Foata normal form. 2/557 useless extension candidates. Maximal degree in co-relation 3508. Up to 393 conditions per place. [2024-06-28 04:22:47,591 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 99 selfloop transitions, 51 changer transitions 0/152 dead transitions. [2024-06-28 04:22:47,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 152 transitions, 1997 flow [2024-06-28 04:22:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:22:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:22:47,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 04:22:47,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40229885057471265 [2024-06-28 04:22:47,595 INFO L175 Difference]: Start difference. First operand has 131 places, 128 transitions, 1605 flow. Second operand 12 states and 140 transitions. [2024-06-28 04:22:47,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 152 transitions, 1997 flow [2024-06-28 04:22:47,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 152 transitions, 1858 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 04:22:47,629 INFO L231 Difference]: Finished difference. Result has 137 places, 130 transitions, 1606 flow [2024-06-28 04:22:47,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1606, PETRI_PLACES=137, PETRI_TRANSITIONS=130} [2024-06-28 04:22:47,630 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 109 predicate places. [2024-06-28 04:22:47,630 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 130 transitions, 1606 flow [2024-06-28 04:22:47,630 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 04:22:47,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:47,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:47,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:22:47,649 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 04:22:47,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:47,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2002126883, now seen corresponding path program 4 times [2024-06-28 04:22:47,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:47,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160047109] [2024-06-28 04:22:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:47,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:48,349 INFO 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 04:22:48,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:48,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160047109] [2024-06-28 04:22:48,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160047109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:48,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:48,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18164758] [2024-06-28 04:22:48,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:48,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:48,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:48,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:48,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 130 transitions, 1606 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 04:22:48,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:48,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:48,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:48,806 INFO L124 PetriNetUnfolderBase]: 359/662 cut-off events. [2024-06-28 04:22:48,807 INFO L125 PetriNetUnfolderBase]: For 10290/10290 co-relation queries the response was YES. [2024-06-28 04:22:48,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4178 conditions, 662 events. 359/662 cut-off events. For 10290/10290 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3038 event pairs, 81 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 4116. Up to 413 conditions per place. [2024-06-28 04:22:48,812 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 111 selfloop transitions, 46 changer transitions 0/159 dead transitions. [2024-06-28 04:22:48,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 159 transitions, 2074 flow [2024-06-28 04:22:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:22:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:22:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 04:22:48,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2024-06-28 04:22:48,814 INFO L175 Difference]: Start difference. First operand has 137 places, 130 transitions, 1606 flow. Second operand 10 states and 130 transitions. [2024-06-28 04:22:48,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 159 transitions, 2074 flow [2024-06-28 04:22:48,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 159 transitions, 1958 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 04:22:48,837 INFO L231 Difference]: Finished difference. Result has 138 places, 133 transitions, 1620 flow [2024-06-28 04:22:48,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1620, PETRI_PLACES=138, PETRI_TRANSITIONS=133} [2024-06-28 04:22:48,838 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 110 predicate places. [2024-06-28 04:22:48,838 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 133 transitions, 1620 flow [2024-06-28 04:22:48,838 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 04:22:48,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:48,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:48,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 04:22:48,838 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 04:22:48,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:48,839 INFO L85 PathProgramCache]: Analyzing trace with hash 653076499, now seen corresponding path program 5 times [2024-06-28 04:22:48,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:48,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917479704] [2024-06-28 04:22:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:48,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:49,543 INFO 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 04:22:49,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:49,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917479704] [2024-06-28 04:22:49,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917479704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:49,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:49,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:49,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665566396] [2024-06-28 04:22:49,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:49,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:49,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:49,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:49,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:49,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:49,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 133 transitions, 1620 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 04:22:49,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:49,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:49,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:49,997 INFO L124 PetriNetUnfolderBase]: 383/714 cut-off events. [2024-06-28 04:22:49,998 INFO L125 PetriNetUnfolderBase]: For 14182/14182 co-relation queries the response was YES. [2024-06-28 04:22:50,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4335 conditions, 714 events. 383/714 cut-off events. For 14182/14182 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3380 event pairs, 85 based on Foata normal form. 14/727 useless extension candidates. Maximal degree in co-relation 4273. Up to 524 conditions per place. [2024-06-28 04:22:50,020 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 104 selfloop transitions, 42 changer transitions 12/160 dead transitions. [2024-06-28 04:22:50,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 160 transitions, 2038 flow [2024-06-28 04:22:50,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:22:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:22:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 04:22:50,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438871473354232 [2024-06-28 04:22:50,022 INFO L175 Difference]: Start difference. First operand has 138 places, 133 transitions, 1620 flow. Second operand 11 states and 140 transitions. [2024-06-28 04:22:50,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 160 transitions, 2038 flow [2024-06-28 04:22:50,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 160 transitions, 1971 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 04:22:50,045 INFO L231 Difference]: Finished difference. Result has 143 places, 129 transitions, 1595 flow [2024-06-28 04:22:50,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1555, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1595, PETRI_PLACES=143, PETRI_TRANSITIONS=129} [2024-06-28 04:22:50,046 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 115 predicate places. [2024-06-28 04:22:50,046 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 129 transitions, 1595 flow [2024-06-28 04:22:50,046 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 04:22:50,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:50,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:50,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 04:22:50,046 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 04:22:50,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:50,047 INFO L85 PathProgramCache]: Analyzing trace with hash 763012457, now seen corresponding path program 3 times [2024-06-28 04:22:50,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:50,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906951949] [2024-06-28 04:22:50,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:50,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:50,758 INFO 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 04:22:50,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:50,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906951949] [2024-06-28 04:22:50,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906951949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:50,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:50,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:50,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189746820] [2024-06-28 04:22:50,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:50,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:50,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:50,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:50,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:50,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:50,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 129 transitions, 1595 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 04:22:50,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:50,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:50,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:51,263 INFO L124 PetriNetUnfolderBase]: 365/674 cut-off events. [2024-06-28 04:22:51,263 INFO L125 PetriNetUnfolderBase]: For 12426/12426 co-relation queries the response was YES. [2024-06-28 04:22:51,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4359 conditions, 674 events. 365/674 cut-off events. For 12426/12426 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3128 event pairs, 84 based on Foata normal form. 2/675 useless extension candidates. Maximal degree in co-relation 4295. Up to 478 conditions per place. [2024-06-28 04:22:51,268 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 100 selfloop transitions, 51 changer transitions 0/153 dead transitions. [2024-06-28 04:22:51,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 2061 flow [2024-06-28 04:22:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:22:51,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:22:51,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 04:22:51,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413793103448276 [2024-06-28 04:22:51,270 INFO L175 Difference]: Start difference. First operand has 143 places, 129 transitions, 1595 flow. Second operand 10 states and 128 transitions. [2024-06-28 04:22:51,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 2061 flow [2024-06-28 04:22:51,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 153 transitions, 1980 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 04:22:51,298 INFO L231 Difference]: Finished difference. Result has 144 places, 133 transitions, 1681 flow [2024-06-28 04:22:51,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1681, PETRI_PLACES=144, PETRI_TRANSITIONS=133} [2024-06-28 04:22:51,299 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 116 predicate places. [2024-06-28 04:22:51,299 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 133 transitions, 1681 flow [2024-06-28 04:22:51,299 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 04:22:51,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:51,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:51,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 04:22:51,300 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 04:22:51,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:51,300 INFO L85 PathProgramCache]: Analyzing trace with hash 655873133, now seen corresponding path program 4 times [2024-06-28 04:22:51,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:51,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062817925] [2024-06-28 04:22:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:51,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:52,075 INFO 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 04:22:52,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:52,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062817925] [2024-06-28 04:22:52,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062817925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:52,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:52,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:52,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983030449] [2024-06-28 04:22:52,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:52,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:52,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:52,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:52,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:52,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:52,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 1681 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 04:22:52,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:52,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:52,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:52,635 INFO L124 PetriNetUnfolderBase]: 371/684 cut-off events. [2024-06-28 04:22:52,636 INFO L125 PetriNetUnfolderBase]: For 13655/13655 co-relation queries the response was YES. [2024-06-28 04:22:52,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 684 events. 371/684 cut-off events. For 13655/13655 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3194 event pairs, 82 based on Foata normal form. 2/685 useless extension candidates. Maximal degree in co-relation 4443. Up to 543 conditions per place. [2024-06-28 04:22:52,641 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 112 selfloop transitions, 38 changer transitions 0/152 dead transitions. [2024-06-28 04:22:52,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 152 transitions, 2063 flow [2024-06-28 04:22:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:22:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:22:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 04:22:52,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-06-28 04:22:52,643 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 1681 flow. Second operand 10 states and 120 transitions. [2024-06-28 04:22:52,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 152 transitions, 2063 flow [2024-06-28 04:22:52,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 152 transitions, 2010 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:52,673 INFO L231 Difference]: Finished difference. Result has 149 places, 135 transitions, 1745 flow [2024-06-28 04:22:52,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1745, PETRI_PLACES=149, PETRI_TRANSITIONS=135} [2024-06-28 04:22:52,674 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 121 predicate places. [2024-06-28 04:22:52,674 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 135 transitions, 1745 flow [2024-06-28 04:22:52,674 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 04:22:52,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:52,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:52,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 04:22:52,675 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 04:22:52,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1626655531, now seen corresponding path program 1 times [2024-06-28 04:22:52,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:52,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107234130] [2024-06-28 04:22:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:52,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:53,651 INFO 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 04:22:53,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:53,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107234130] [2024-06-28 04:22:53,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107234130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:53,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:53,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:53,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349543410] [2024-06-28 04:22:53,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:53,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:53,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:53,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:53,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:53,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:53,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 135 transitions, 1745 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 04:22:53,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:53,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:53,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:54,045 INFO L124 PetriNetUnfolderBase]: 375/690 cut-off events. [2024-06-28 04:22:54,045 INFO L125 PetriNetUnfolderBase]: For 14739/14739 co-relation queries the response was YES. [2024-06-28 04:22:54,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4622 conditions, 690 events. 375/690 cut-off events. For 14739/14739 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3213 event pairs, 98 based on Foata normal form. 2/691 useless extension candidates. Maximal degree in co-relation 4556. Up to 621 conditions per place. [2024-06-28 04:22:54,049 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 124 selfloop transitions, 24 changer transitions 0/150 dead transitions. [2024-06-28 04:22:54,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 150 transitions, 2085 flow [2024-06-28 04:22:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 04:22:54,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39846743295019155 [2024-06-28 04:22:54,051 INFO L175 Difference]: Start difference. First operand has 149 places, 135 transitions, 1745 flow. Second operand 9 states and 104 transitions. [2024-06-28 04:22:54,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 150 transitions, 2085 flow [2024-06-28 04:22:54,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 150 transitions, 2006 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:54,081 INFO L231 Difference]: Finished difference. Result has 151 places, 136 transitions, 1726 flow [2024-06-28 04:22:54,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1726, PETRI_PLACES=151, PETRI_TRANSITIONS=136} [2024-06-28 04:22:54,082 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 123 predicate places. [2024-06-28 04:22:54,082 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 136 transitions, 1726 flow [2024-06-28 04:22:54,082 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 04:22:54,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:54,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:54,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 04:22:54,083 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 04:22:54,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:54,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2120275137, now seen corresponding path program 5 times [2024-06-28 04:22:54,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:54,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368941305] [2024-06-28 04:22:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:54,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:54,833 INFO 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 04:22:54,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:54,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368941305] [2024-06-28 04:22:54,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368941305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:54,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:54,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:54,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388742567] [2024-06-28 04:22:54,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:54,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:54,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:54,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:54,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:54,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:54,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 136 transitions, 1726 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 04:22:54,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:54,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:54,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:55,260 INFO L124 PetriNetUnfolderBase]: 371/684 cut-off events. [2024-06-28 04:22:55,261 INFO L125 PetriNetUnfolderBase]: For 14834/14834 co-relation queries the response was YES. [2024-06-28 04:22:55,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4520 conditions, 684 events. 371/684 cut-off events. For 14834/14834 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3179 event pairs, 92 based on Foata normal form. 2/685 useless extension candidates. Maximal degree in co-relation 4453. Up to 600 conditions per place. [2024-06-28 04:22:55,265 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 123 selfloop transitions, 28 changer transitions 0/153 dead transitions. [2024-06-28 04:22:55,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 153 transitions, 2078 flow [2024-06-28 04:22:55,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:22:55,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:22:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 04:22:55,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2024-06-28 04:22:55,267 INFO L175 Difference]: Start difference. First operand has 151 places, 136 transitions, 1726 flow. Second operand 10 states and 118 transitions. [2024-06-28 04:22:55,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 153 transitions, 2078 flow [2024-06-28 04:22:55,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 153 transitions, 1997 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:55,298 INFO L231 Difference]: Finished difference. Result has 154 places, 136 transitions, 1706 flow [2024-06-28 04:22:55,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1706, PETRI_PLACES=154, PETRI_TRANSITIONS=136} [2024-06-28 04:22:55,298 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 126 predicate places. [2024-06-28 04:22:55,299 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 136 transitions, 1706 flow [2024-06-28 04:22:55,299 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 04:22:55,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:55,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:55,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 04:22:55,299 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 04:22:55,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2120275013, now seen corresponding path program 6 times [2024-06-28 04:22:55,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:55,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676818474] [2024-06-28 04:22:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:55,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:55,980 INFO 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 04:22:55,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:55,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676818474] [2024-06-28 04:22:55,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676818474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:55,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:55,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:55,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445037193] [2024-06-28 04:22:55,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:55,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:55,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:55,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:55,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:56,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:56,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 136 transitions, 1706 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 04:22:56,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:56,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:56,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:56,422 INFO L124 PetriNetUnfolderBase]: 352/651 cut-off events. [2024-06-28 04:22:56,423 INFO L125 PetriNetUnfolderBase]: For 14685/14685 co-relation queries the response was YES. [2024-06-28 04:22:56,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4028 conditions, 651 events. 352/651 cut-off events. For 14685/14685 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3016 event pairs, 79 based on Foata normal form. 14/664 useless extension candidates. Maximal degree in co-relation 3961. Up to 527 conditions per place. [2024-06-28 04:22:56,427 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 122 selfloop transitions, 20 changer transitions 13/157 dead transitions. [2024-06-28 04:22:56,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 157 transitions, 2092 flow [2024-06-28 04:22:56,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:22:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:22:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 04:22:56,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-06-28 04:22:56,433 INFO L175 Difference]: Start difference. First operand has 154 places, 136 transitions, 1706 flow. Second operand 10 states and 120 transitions. [2024-06-28 04:22:56,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 157 transitions, 2092 flow [2024-06-28 04:22:56,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 157 transitions, 2024 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 04:22:56,464 INFO L231 Difference]: Finished difference. Result has 156 places, 130 transitions, 1601 flow [2024-06-28 04:22:56,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1601, PETRI_PLACES=156, PETRI_TRANSITIONS=130} [2024-06-28 04:22:56,466 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 128 predicate places. [2024-06-28 04:22:56,466 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 130 transitions, 1601 flow [2024-06-28 04:22:56,466 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 04:22:56,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:56,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:56,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:22:56,467 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 04:22:56,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash -781836995, now seen corresponding path program 7 times [2024-06-28 04:22:56,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:56,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575489463] [2024-06-28 04:22:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:56,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:57,096 INFO 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 04:22:57,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:57,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575489463] [2024-06-28 04:22:57,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575489463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:57,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:57,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:57,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354020627] [2024-06-28 04:22:57,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:57,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:57,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:57,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:57,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:57,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:57,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 130 transitions, 1601 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 04:22:57,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:57,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:57,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:57,415 INFO L124 PetriNetUnfolderBase]: 318/589 cut-off events. [2024-06-28 04:22:57,415 INFO L125 PetriNetUnfolderBase]: For 10347/10347 co-relation queries the response was YES. [2024-06-28 04:22:57,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3717 conditions, 589 events. 318/589 cut-off events. For 10347/10347 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2691 event pairs, 33 based on Foata normal form. 2/590 useless extension candidates. Maximal degree in co-relation 3649. Up to 349 conditions per place. [2024-06-28 04:22:57,420 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 83 selfloop transitions, 63 changer transitions 0/148 dead transitions. [2024-06-28 04:22:57,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 148 transitions, 2000 flow [2024-06-28 04:22:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:57,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 04:22:57,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099616858237548 [2024-06-28 04:22:57,441 INFO L175 Difference]: Start difference. First operand has 156 places, 130 transitions, 1601 flow. Second operand 9 states and 107 transitions. [2024-06-28 04:22:57,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 148 transitions, 2000 flow [2024-06-28 04:22:57,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 148 transitions, 1913 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 04:22:57,469 INFO L231 Difference]: Finished difference. Result has 154 places, 131 transitions, 1659 flow [2024-06-28 04:22:57,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1659, PETRI_PLACES=154, PETRI_TRANSITIONS=131} [2024-06-28 04:22:57,470 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 126 predicate places. [2024-06-28 04:22:57,470 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 131 transitions, 1659 flow [2024-06-28 04:22:57,470 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 04:22:57,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:57,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:57,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:22:57,471 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 04:22:57,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:57,471 INFO L85 PathProgramCache]: Analyzing trace with hash -788906397, now seen corresponding path program 8 times [2024-06-28 04:22:57,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:57,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068827516] [2024-06-28 04:22:57,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:57,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:58,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:58,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068827516] [2024-06-28 04:22:58,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068827516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:58,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:58,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:58,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777623530] [2024-06-28 04:22:58,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:58,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:58,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:58,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:58,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:58,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:58,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 131 transitions, 1659 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 04:22:58,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:58,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:58,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:58,389 INFO L124 PetriNetUnfolderBase]: 330/613 cut-off events. [2024-06-28 04:22:58,389 INFO L125 PetriNetUnfolderBase]: For 10585/10585 co-relation queries the response was YES. [2024-06-28 04:22:58,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3872 conditions, 613 events. 330/613 cut-off events. For 10585/10585 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2843 event pairs, 57 based on Foata normal form. 2/614 useless extension candidates. Maximal degree in co-relation 3806. Up to 472 conditions per place. [2024-06-28 04:22:58,393 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 89 selfloop transitions, 58 changer transitions 0/149 dead transitions. [2024-06-28 04:22:58,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 149 transitions, 2020 flow [2024-06-28 04:22:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 04:22:58,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099616858237548 [2024-06-28 04:22:58,395 INFO L175 Difference]: Start difference. First operand has 154 places, 131 transitions, 1659 flow. Second operand 9 states and 107 transitions. [2024-06-28 04:22:58,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 149 transitions, 2020 flow [2024-06-28 04:22:58,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 149 transitions, 1909 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 04:22:58,423 INFO L231 Difference]: Finished difference. Result has 154 places, 134 transitions, 1708 flow [2024-06-28 04:22:58,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1708, PETRI_PLACES=154, PETRI_TRANSITIONS=134} [2024-06-28 04:22:58,423 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 126 predicate places. [2024-06-28 04:22:58,424 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 134 transitions, 1708 flow [2024-06-28 04:22:58,424 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 04:22:58,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:58,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:58,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:22:58,424 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 04:22:58,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:58,425 INFO L85 PathProgramCache]: Analyzing trace with hash -788906273, now seen corresponding path program 6 times [2024-06-28 04:22:58,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:58,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814880056] [2024-06-28 04:22:58,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:58,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:59,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:59,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814880056] [2024-06-28 04:22:59,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814880056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:59,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:59,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068027442] [2024-06-28 04:22:59,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:59,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:59,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:59,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:22:59,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 134 transitions, 1708 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 04:22:59,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:59,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:22:59,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:59,426 INFO L124 PetriNetUnfolderBase]: 342/633 cut-off events. [2024-06-28 04:22:59,427 INFO L125 PetriNetUnfolderBase]: For 9727/9727 co-relation queries the response was YES. [2024-06-28 04:22:59,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3954 conditions, 633 events. 342/633 cut-off events. For 9727/9727 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2967 event pairs, 53 based on Foata normal form. 2/634 useless extension candidates. Maximal degree in co-relation 3890. Up to 358 conditions per place. [2024-06-28 04:22:59,431 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 74 selfloop transitions, 81 changer transitions 0/157 dead transitions. [2024-06-28 04:22:59,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 157 transitions, 2170 flow [2024-06-28 04:22:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:59,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 04:22:59,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2024-06-28 04:22:59,432 INFO L175 Difference]: Start difference. First operand has 154 places, 134 transitions, 1708 flow. Second operand 9 states and 117 transitions. [2024-06-28 04:22:59,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 157 transitions, 2170 flow [2024-06-28 04:22:59,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 157 transitions, 2061 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:59,458 INFO L231 Difference]: Finished difference. Result has 156 places, 138 transitions, 1819 flow [2024-06-28 04:22:59,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1599, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1819, PETRI_PLACES=156, PETRI_TRANSITIONS=138} [2024-06-28 04:22:59,459 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 128 predicate places. [2024-06-28 04:22:59,459 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 138 transitions, 1819 flow [2024-06-28 04:22:59,459 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 04:22:59,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:59,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:59,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:22:59,459 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 04:22:59,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:59,460 INFO L85 PathProgramCache]: Analyzing trace with hash -778979911, now seen corresponding path program 7 times [2024-06-28 04:22:59,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:59,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733978305] [2024-06-28 04:22:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:59,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:00,209 INFO 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 04:23:00,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:00,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733978305] [2024-06-28 04:23:00,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733978305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:00,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:00,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:00,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729712071] [2024-06-28 04:23:00,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:00,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:00,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:00,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:00,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:00,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:00,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 138 transitions, 1819 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 04:23:00,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:00,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:00,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:00,528 INFO L124 PetriNetUnfolderBase]: 358/659 cut-off events. [2024-06-28 04:23:00,528 INFO L125 PetriNetUnfolderBase]: For 11377/11377 co-relation queries the response was YES. [2024-06-28 04:23:00,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 659 events. 358/659 cut-off events. For 11377/11377 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3111 event pairs, 62 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4250. Up to 468 conditions per place. [2024-06-28 04:23:00,533 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 98 selfloop transitions, 60 changer transitions 0/160 dead transitions. [2024-06-28 04:23:00,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 160 transitions, 2315 flow [2024-06-28 04:23:00,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:00,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 04:23:00,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44061302681992337 [2024-06-28 04:23:00,562 INFO L175 Difference]: Start difference. First operand has 156 places, 138 transitions, 1819 flow. Second operand 9 states and 115 transitions. [2024-06-28 04:23:00,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 160 transitions, 2315 flow [2024-06-28 04:23:00,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 160 transitions, 2169 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 04:23:00,593 INFO L231 Difference]: Finished difference. Result has 157 places, 142 transitions, 1884 flow [2024-06-28 04:23:00,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1884, PETRI_PLACES=157, PETRI_TRANSITIONS=142} [2024-06-28 04:23:00,593 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 129 predicate places. [2024-06-28 04:23:00,593 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 142 transitions, 1884 flow [2024-06-28 04:23:00,593 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 04:23:00,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:00,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:00,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:23:00,594 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 04:23:00,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:00,594 INFO L85 PathProgramCache]: Analyzing trace with hash -778975261, now seen corresponding path program 8 times [2024-06-28 04:23:00,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:00,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75012166] [2024-06-28 04:23:00,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:00,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:01,329 INFO 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 04:23:01,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:01,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75012166] [2024-06-28 04:23:01,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75012166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:01,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:01,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:01,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517833047] [2024-06-28 04:23:01,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:01,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:01,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:01,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:01,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:01,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:01,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 142 transitions, 1884 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 04:23:01,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:01,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:01,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:01,637 INFO L124 PetriNetUnfolderBase]: 354/653 cut-off events. [2024-06-28 04:23:01,637 INFO L125 PetriNetUnfolderBase]: For 10112/10112 co-relation queries the response was YES. [2024-06-28 04:23:01,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4174 conditions, 653 events. 354/653 cut-off events. For 10112/10112 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3078 event pairs, 62 based on Foata normal form. 2/654 useless extension candidates. Maximal degree in co-relation 4110. Up to 517 conditions per place. [2024-06-28 04:23:01,642 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 114 selfloop transitions, 42 changer transitions 0/158 dead transitions. [2024-06-28 04:23:01,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 158 transitions, 2242 flow [2024-06-28 04:23:01,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 04:23:01,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41762452107279696 [2024-06-28 04:23:01,666 INFO L175 Difference]: Start difference. First operand has 157 places, 142 transitions, 1884 flow. Second operand 9 states and 109 transitions. [2024-06-28 04:23:01,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 158 transitions, 2242 flow [2024-06-28 04:23:01,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 158 transitions, 2149 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:01,694 INFO L231 Difference]: Finished difference. Result has 160 places, 142 transitions, 1883 flow [2024-06-28 04:23:01,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1883, PETRI_PLACES=160, PETRI_TRANSITIONS=142} [2024-06-28 04:23:01,695 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 132 predicate places. [2024-06-28 04:23:01,695 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 142 transitions, 1883 flow [2024-06-28 04:23:01,695 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 04:23:01,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:01,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:01,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:23:01,695 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 04:23:01,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:01,696 INFO L85 PathProgramCache]: Analyzing trace with hash -778980035, now seen corresponding path program 9 times [2024-06-28 04:23:01,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:01,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955276917] [2024-06-28 04:23:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:01,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:02,358 INFO 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 04:23:02,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:02,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955276917] [2024-06-28 04:23:02,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955276917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:02,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:02,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:02,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927864737] [2024-06-28 04:23:02,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:02,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:02,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:02,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:02,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:02,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:02,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 142 transitions, 1883 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 04:23:02,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:02,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:02,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:02,695 INFO L124 PetriNetUnfolderBase]: 378/705 cut-off events. [2024-06-28 04:23:02,695 INFO L125 PetriNetUnfolderBase]: For 14122/14122 co-relation queries the response was YES. [2024-06-28 04:23:02,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 705 events. 378/705 cut-off events. For 14122/14122 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3416 event pairs, 66 based on Foata normal form. 14/718 useless extension candidates. Maximal degree in co-relation 4299. Up to 482 conditions per place. [2024-06-28 04:23:02,700 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 105 selfloop transitions, 41 changer transitions 17/165 dead transitions. [2024-06-28 04:23:02,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 165 transitions, 2299 flow [2024-06-28 04:23:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 04:23:02,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 04:23:02,702 INFO L175 Difference]: Start difference. First operand has 160 places, 142 transitions, 1883 flow. Second operand 9 states and 116 transitions. [2024-06-28 04:23:02,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 165 transitions, 2299 flow [2024-06-28 04:23:02,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 165 transitions, 2190 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 04:23:02,729 INFO L231 Difference]: Finished difference. Result has 161 places, 133 transitions, 1758 flow [2024-06-28 04:23:02,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1758, PETRI_PLACES=161, PETRI_TRANSITIONS=133} [2024-06-28 04:23:02,730 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 133 predicate places. [2024-06-28 04:23:02,730 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 133 transitions, 1758 flow [2024-06-28 04:23:02,730 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 04:23:02,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:02,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:02,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:23:02,730 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 04:23:02,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:02,731 INFO L85 PathProgramCache]: Analyzing trace with hash -663504167, now seen corresponding path program 2 times [2024-06-28 04:23:02,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:02,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072623510] [2024-06-28 04:23:02,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:02,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:03,475 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 04:23:03,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:03,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072623510] [2024-06-28 04:23:03,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072623510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:03,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:03,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:03,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849001825] [2024-06-28 04:23:03,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:03,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:03,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:03,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:03,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:03,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:03,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 133 transitions, 1758 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 04:23:03,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:03,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:03,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:03,716 INFO L124 PetriNetUnfolderBase]: 334/625 cut-off events. [2024-06-28 04:23:03,717 INFO L125 PetriNetUnfolderBase]: For 10290/10290 co-relation queries the response was YES. [2024-06-28 04:23:03,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 625 events. 334/625 cut-off events. For 10290/10290 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2958 event pairs, 69 based on Foata normal form. 2/626 useless extension candidates. Maximal degree in co-relation 3935. Up to 550 conditions per place. [2024-06-28 04:23:03,720 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 119 selfloop transitions, 25 changer transitions 0/146 dead transitions. [2024-06-28 04:23:03,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 146 transitions, 2086 flow [2024-06-28 04:23:03,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:03,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 04:23:03,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4051724137931034 [2024-06-28 04:23:03,722 INFO L175 Difference]: Start difference. First operand has 161 places, 133 transitions, 1758 flow. Second operand 8 states and 94 transitions. [2024-06-28 04:23:03,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 146 transitions, 2086 flow [2024-06-28 04:23:03,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 146 transitions, 1974 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 04:23:03,745 INFO L231 Difference]: Finished difference. Result has 156 places, 134 transitions, 1712 flow [2024-06-28 04:23:03,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1646, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1712, PETRI_PLACES=156, PETRI_TRANSITIONS=134} [2024-06-28 04:23:03,746 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 128 predicate places. [2024-06-28 04:23:03,746 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 134 transitions, 1712 flow [2024-06-28 04:23:03,746 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 04:23:03,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:03,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:03,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 04:23:03,746 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 04:23:03,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:03,747 INFO L85 PathProgramCache]: Analyzing trace with hash -670640963, now seen corresponding path program 9 times [2024-06-28 04:23:03,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:03,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30628398] [2024-06-28 04:23:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:03,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:04,516 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 04:23:04,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:04,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30628398] [2024-06-28 04:23:04,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30628398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:04,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:04,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:04,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817763488] [2024-06-28 04:23:04,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:04,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:04,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:04,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:04,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 134 transitions, 1712 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 04:23:04,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:04,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:04,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:05,003 INFO L124 PetriNetUnfolderBase]: 346/645 cut-off events. [2024-06-28 04:23:05,003 INFO L125 PetriNetUnfolderBase]: For 10445/10445 co-relation queries the response was YES. [2024-06-28 04:23:05,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4076 conditions, 645 events. 346/645 cut-off events. For 10445/10445 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3049 event pairs, 71 based on Foata normal form. 2/646 useless extension candidates. Maximal degree in co-relation 4010. Up to 563 conditions per place. [2024-06-28 04:23:05,007 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 124 selfloop transitions, 29 changer transitions 0/155 dead transitions. [2024-06-28 04:23:05,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 155 transitions, 2131 flow [2024-06-28 04:23:05,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:05,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 04:23:05,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38557993730407525 [2024-06-28 04:23:05,008 INFO L175 Difference]: Start difference. First operand has 156 places, 134 transitions, 1712 flow. Second operand 11 states and 123 transitions. [2024-06-28 04:23:05,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 155 transitions, 2131 flow [2024-06-28 04:23:05,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 155 transitions, 2086 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:05,035 INFO L231 Difference]: Finished difference. Result has 162 places, 138 transitions, 1799 flow [2024-06-28 04:23:05,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1799, PETRI_PLACES=162, PETRI_TRANSITIONS=138} [2024-06-28 04:23:05,035 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 134 predicate places. [2024-06-28 04:23:05,036 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 138 transitions, 1799 flow [2024-06-28 04:23:05,036 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 04:23:05,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:05,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:05,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 04:23:05,036 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 04:23:05,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:05,037 INFO L85 PathProgramCache]: Analyzing trace with hash -663684091, now seen corresponding path program 10 times [2024-06-28 04:23:05,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:05,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72407574] [2024-06-28 04:23:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:05,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:05,816 INFO 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 04:23:05,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:05,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72407574] [2024-06-28 04:23:05,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72407574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:05,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:05,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:05,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805793251] [2024-06-28 04:23:05,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:05,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:05,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:05,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:05,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:05,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:05,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 138 transitions, 1799 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 04:23:05,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:05,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:05,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:06,140 INFO L124 PetriNetUnfolderBase]: 352/655 cut-off events. [2024-06-28 04:23:06,140 INFO L125 PetriNetUnfolderBase]: For 10749/10749 co-relation queries the response was YES. [2024-06-28 04:23:06,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4171 conditions, 655 events. 352/655 cut-off events. For 10749/10749 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3116 event pairs, 72 based on Foata normal form. 2/656 useless extension candidates. Maximal degree in co-relation 4104. Up to 564 conditions per place. [2024-06-28 04:23:06,144 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 123 selfloop transitions, 30 changer transitions 0/155 dead transitions. [2024-06-28 04:23:06,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 155 transitions, 2191 flow [2024-06-28 04:23:06,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 04:23:06,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-06-28 04:23:06,145 INFO L175 Difference]: Start difference. First operand has 162 places, 138 transitions, 1799 flow. Second operand 9 states and 108 transitions. [2024-06-28 04:23:06,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 155 transitions, 2191 flow [2024-06-28 04:23:06,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 155 transitions, 2076 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:06,171 INFO L231 Difference]: Finished difference. Result has 162 places, 140 transitions, 1795 flow [2024-06-28 04:23:06,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1795, PETRI_PLACES=162, PETRI_TRANSITIONS=140} [2024-06-28 04:23:06,172 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 134 predicate places. [2024-06-28 04:23:06,172 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 140 transitions, 1795 flow [2024-06-28 04:23:06,172 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 04:23:06,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:06,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:06,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 04:23:06,173 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 04:23:06,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:06,173 INFO L85 PathProgramCache]: Analyzing trace with hash -670818593, now seen corresponding path program 11 times [2024-06-28 04:23:06,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:06,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099431689] [2024-06-28 04:23:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:06,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:06,846 INFO 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 04:23:06,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:06,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099431689] [2024-06-28 04:23:06,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099431689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:06,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:06,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:06,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490289817] [2024-06-28 04:23:06,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:06,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:06,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:06,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:06,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:06,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:06,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 140 transitions, 1795 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 04:23:06,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:06,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:06,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:07,242 INFO L124 PetriNetUnfolderBase]: 358/665 cut-off events. [2024-06-28 04:23:07,242 INFO L125 PetriNetUnfolderBase]: For 11263/11263 co-relation queries the response was YES. [2024-06-28 04:23:07,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4224 conditions, 665 events. 358/665 cut-off events. For 11263/11263 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3175 event pairs, 70 based on Foata normal form. 2/666 useless extension candidates. Maximal degree in co-relation 4156. Up to 542 conditions per place. [2024-06-28 04:23:07,246 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 113 selfloop transitions, 43 changer transitions 0/158 dead transitions. [2024-06-28 04:23:07,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 158 transitions, 2199 flow [2024-06-28 04:23:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 04:23:07,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2024-06-28 04:23:07,248 INFO L175 Difference]: Start difference. First operand has 162 places, 140 transitions, 1795 flow. Second operand 10 states and 118 transitions. [2024-06-28 04:23:07,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 158 transitions, 2199 flow [2024-06-28 04:23:07,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 158 transitions, 2110 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:07,279 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 1850 flow [2024-06-28 04:23:07,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1850, PETRI_PLACES=165, PETRI_TRANSITIONS=142} [2024-06-28 04:23:07,279 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 137 predicate places. [2024-06-28 04:23:07,279 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 1850 flow [2024-06-28 04:23:07,280 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 04:23:07,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:07,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:07,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 04:23:07,280 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 04:23:07,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:07,280 INFO L85 PathProgramCache]: Analyzing trace with hash -663688865, now seen corresponding path program 10 times [2024-06-28 04:23:07,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:07,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553090820] [2024-06-28 04:23:07,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:07,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:07,996 INFO 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 04:23:07,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:07,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553090820] [2024-06-28 04:23:07,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553090820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:07,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:07,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:07,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016616660] [2024-06-28 04:23:07,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:08,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:08,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:08,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:08,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:08,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:08,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 142 transitions, 1850 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 04:23:08,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:08,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:08,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:08,389 INFO L124 PetriNetUnfolderBase]: 382/717 cut-off events. [2024-06-28 04:23:08,390 INFO L125 PetriNetUnfolderBase]: For 17257/17257 co-relation queries the response was YES. [2024-06-28 04:23:08,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4416 conditions, 717 events. 382/717 cut-off events. For 17257/17257 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3496 event pairs, 74 based on Foata normal form. 14/730 useless extension candidates. Maximal degree in co-relation 4347. Up to 549 conditions per place. [2024-06-28 04:23:08,394 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 119 selfloop transitions, 25 changer transitions 17/163 dead transitions. [2024-06-28 04:23:08,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 163 transitions, 2258 flow [2024-06-28 04:23:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:08,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:08,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 04:23:08,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42911877394636017 [2024-06-28 04:23:08,397 INFO L175 Difference]: Start difference. First operand has 165 places, 142 transitions, 1850 flow. Second operand 9 states and 112 transitions. [2024-06-28 04:23:08,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 163 transitions, 2258 flow [2024-06-28 04:23:08,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 163 transitions, 2141 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:08,428 INFO L231 Difference]: Finished difference. Result has 165 places, 133 transitions, 1710 flow [2024-06-28 04:23:08,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1733, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1710, PETRI_PLACES=165, PETRI_TRANSITIONS=133} [2024-06-28 04:23:08,428 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 137 predicate places. [2024-06-28 04:23:08,429 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 133 transitions, 1710 flow [2024-06-28 04:23:08,429 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 04:23:08,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:08,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:08,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 04:23:08,429 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 04:23:08,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:08,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1853466067, now seen corresponding path program 12 times [2024-06-28 04:23:08,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:08,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222554641] [2024-06-28 04:23:08,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:08,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:09,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:09,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222554641] [2024-06-28 04:23:09,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222554641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:09,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:09,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:09,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352610391] [2024-06-28 04:23:09,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:09,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:09,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:09,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:09,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:09,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:09,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 133 transitions, 1710 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 04:23:09,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:09,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:09,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:09,496 INFO L124 PetriNetUnfolderBase]: 344/648 cut-off events. [2024-06-28 04:23:09,496 INFO L125 PetriNetUnfolderBase]: For 11941/11941 co-relation queries the response was YES. [2024-06-28 04:23:09,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4119 conditions, 648 events. 344/648 cut-off events. For 11941/11941 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3108 event pairs, 62 based on Foata normal form. 2/649 useless extension candidates. Maximal degree in co-relation 4050. Up to 570 conditions per place. [2024-06-28 04:23:09,500 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 122 selfloop transitions, 25 changer transitions 0/149 dead transitions. [2024-06-28 04:23:09,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 149 transitions, 2111 flow [2024-06-28 04:23:09,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:09,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:09,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 04:23:09,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40948275862068967 [2024-06-28 04:23:09,501 INFO L175 Difference]: Start difference. First operand has 165 places, 133 transitions, 1710 flow. Second operand 8 states and 95 transitions. [2024-06-28 04:23:09,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 149 transitions, 2111 flow [2024-06-28 04:23:09,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 149 transitions, 2035 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 04:23:09,527 INFO L231 Difference]: Finished difference. Result has 159 places, 137 transitions, 1766 flow [2024-06-28 04:23:09,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1766, PETRI_PLACES=159, PETRI_TRANSITIONS=137} [2024-06-28 04:23:09,527 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 131 predicate places. [2024-06-28 04:23:09,527 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 137 transitions, 1766 flow [2024-06-28 04:23:09,527 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 04:23:09,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:09,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:09,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 04:23:09,528 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 04:23:09,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:09,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1853459123, now seen corresponding path program 3 times [2024-06-28 04:23:09,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:09,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147248789] [2024-06-28 04:23:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:09,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:10,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147248789] [2024-06-28 04:23:10,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147248789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:10,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:10,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:10,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275568046] [2024-06-28 04:23:10,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:10,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:10,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:10,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:10,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:10,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:10,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 137 transitions, 1766 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 04:23:10,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:10,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:10,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:10,401 INFO L124 PetriNetUnfolderBase]: 348/655 cut-off events. [2024-06-28 04:23:10,401 INFO L125 PetriNetUnfolderBase]: For 10672/10672 co-relation queries the response was YES. [2024-06-28 04:23:10,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4084 conditions, 655 events. 348/655 cut-off events. For 10672/10672 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3171 event pairs, 70 based on Foata normal form. 2/656 useless extension candidates. Maximal degree in co-relation 4017. Up to 583 conditions per place. [2024-06-28 04:23:10,405 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 125 selfloop transitions, 21 changer transitions 0/148 dead transitions. [2024-06-28 04:23:10,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 148 transitions, 2092 flow [2024-06-28 04:23:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-28 04:23:10,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039408866995074 [2024-06-28 04:23:10,410 INFO L175 Difference]: Start difference. First operand has 159 places, 137 transitions, 1766 flow. Second operand 7 states and 82 transitions. [2024-06-28 04:23:10,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 148 transitions, 2092 flow [2024-06-28 04:23:10,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 148 transitions, 1991 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:10,436 INFO L231 Difference]: Finished difference. Result has 160 places, 138 transitions, 1725 flow [2024-06-28 04:23:10,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1725, PETRI_PLACES=160, PETRI_TRANSITIONS=138} [2024-06-28 04:23:10,439 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 132 predicate places. [2024-06-28 04:23:10,439 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 138 transitions, 1725 flow [2024-06-28 04:23:10,439 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 04:23:10,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:10,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:10,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 04:23:10,440 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 04:23:10,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:10,440 INFO L85 PathProgramCache]: Analyzing trace with hash 239523039, now seen corresponding path program 13 times [2024-06-28 04:23:10,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:10,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697567636] [2024-06-28 04:23:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:10,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:11,093 INFO 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 04:23:11,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:11,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697567636] [2024-06-28 04:23:11,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697567636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:11,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:11,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:11,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719109231] [2024-06-28 04:23:11,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:11,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:11,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:11,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:11,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:11,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:11,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 138 transitions, 1725 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 04:23:11,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:11,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:11,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:11,507 INFO L124 PetriNetUnfolderBase]: 354/665 cut-off events. [2024-06-28 04:23:11,508 INFO L125 PetriNetUnfolderBase]: For 11020/11020 co-relation queries the response was YES. [2024-06-28 04:23:11,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4103 conditions, 665 events. 354/665 cut-off events. For 11020/11020 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3212 event pairs, 48 based on Foata normal form. 2/666 useless extension candidates. Maximal degree in co-relation 4037. Up to 518 conditions per place. [2024-06-28 04:23:11,512 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 108 selfloop transitions, 48 changer transitions 0/158 dead transitions. [2024-06-28 04:23:11,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 158 transitions, 2193 flow [2024-06-28 04:23:11,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:11,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:11,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-28 04:23:11,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46551724137931033 [2024-06-28 04:23:11,513 INFO L175 Difference]: Start difference. First operand has 160 places, 138 transitions, 1725 flow. Second operand 8 states and 108 transitions. [2024-06-28 04:23:11,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 158 transitions, 2193 flow [2024-06-28 04:23:11,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 158 transitions, 2154 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 04:23:11,541 INFO L231 Difference]: Finished difference. Result has 164 places, 140 transitions, 1835 flow [2024-06-28 04:23:11,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1835, PETRI_PLACES=164, PETRI_TRANSITIONS=140} [2024-06-28 04:23:11,542 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 136 predicate places. [2024-06-28 04:23:11,542 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 140 transitions, 1835 flow [2024-06-28 04:23:11,542 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 04:23:11,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:11,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:11,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 04:23:11,543 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 04:23:11,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:11,543 INFO L85 PathProgramCache]: Analyzing trace with hash 246194363, now seen corresponding path program 4 times [2024-06-28 04:23:11,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:11,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260765642] [2024-06-28 04:23:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:11,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:12,285 INFO 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 04:23:12,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:12,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260765642] [2024-06-28 04:23:12,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260765642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:12,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:12,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:12,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874620787] [2024-06-28 04:23:12,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:12,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:12,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:12,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:12,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:12,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:12,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 140 transitions, 1835 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 04:23:12,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:12,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:12,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:12,561 INFO L124 PetriNetUnfolderBase]: 358/673 cut-off events. [2024-06-28 04:23:12,561 INFO L125 PetriNetUnfolderBase]: For 11425/11425 co-relation queries the response was YES. [2024-06-28 04:23:12,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4212 conditions, 673 events. 358/673 cut-off events. For 11425/11425 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3270 event pairs, 78 based on Foata normal form. 2/674 useless extension candidates. Maximal degree in co-relation 4145. Up to 578 conditions per place. [2024-06-28 04:23:12,566 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 123 selfloop transitions, 25 changer transitions 0/150 dead transitions. [2024-06-28 04:23:12,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 150 transitions, 2163 flow [2024-06-28 04:23:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:23:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:23:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-28 04:23:12,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2024-06-28 04:23:12,567 INFO L175 Difference]: Start difference. First operand has 164 places, 140 transitions, 1835 flow. Second operand 6 states and 76 transitions. [2024-06-28 04:23:12,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 150 transitions, 2163 flow [2024-06-28 04:23:12,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 150 transitions, 1981 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:12,597 INFO L231 Difference]: Finished difference. Result has 163 places, 141 transitions, 1724 flow [2024-06-28 04:23:12,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1724, PETRI_PLACES=163, PETRI_TRANSITIONS=141} [2024-06-28 04:23:12,597 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 135 predicate places. [2024-06-28 04:23:12,597 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 141 transitions, 1724 flow [2024-06-28 04:23:12,598 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 04:23:12,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:12,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:12,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 04:23:12,598 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 04:23:12,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:12,598 INFO L85 PathProgramCache]: Analyzing trace with hash 239522915, now seen corresponding path program 11 times [2024-06-28 04:23:12,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:12,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14649433] [2024-06-28 04:23:12,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:12,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:13,211 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 04:23:13,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:13,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14649433] [2024-06-28 04:23:13,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14649433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:13,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:13,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:13,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475313525] [2024-06-28 04:23:13,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:13,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:13,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:13,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:13,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:13,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 141 transitions, 1724 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 04:23:13,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:13,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:13,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:13,555 INFO L124 PetriNetUnfolderBase]: 355/668 cut-off events. [2024-06-28 04:23:13,555 INFO L125 PetriNetUnfolderBase]: For 10487/10487 co-relation queries the response was YES. [2024-06-28 04:23:13,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3966 conditions, 668 events. 355/668 cut-off events. For 10487/10487 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3256 event pairs, 38 based on Foata normal form. 2/669 useless extension candidates. Maximal degree in co-relation 3899. Up to 541 conditions per place. [2024-06-28 04:23:13,559 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 118 selfloop transitions, 35 changer transitions 0/155 dead transitions. [2024-06-28 04:23:13,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 155 transitions, 2066 flow [2024-06-28 04:23:13,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:13,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:13,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 04:23:13,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224137931034483 [2024-06-28 04:23:13,561 INFO L175 Difference]: Start difference. First operand has 163 places, 141 transitions, 1724 flow. Second operand 8 states and 98 transitions. [2024-06-28 04:23:13,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 155 transitions, 2066 flow [2024-06-28 04:23:13,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 155 transitions, 2017 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 04:23:13,589 INFO L231 Difference]: Finished difference. Result has 167 places, 141 transitions, 1757 flow [2024-06-28 04:23:13,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1757, PETRI_PLACES=167, PETRI_TRANSITIONS=141} [2024-06-28 04:23:13,590 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 139 predicate places. [2024-06-28 04:23:13,590 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 141 transitions, 1757 flow [2024-06-28 04:23:13,590 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 04:23:13,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:13,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:13,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 04:23:13,590 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 04:23:13,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:13,591 INFO L85 PathProgramCache]: Analyzing trace with hash 239527689, now seen corresponding path program 14 times [2024-06-28 04:23:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:13,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130101854] [2024-06-28 04:23:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:13,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:14,417 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 04:23:14,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:14,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130101854] [2024-06-28 04:23:14,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130101854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:14,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:14,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:14,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561935475] [2024-06-28 04:23:14,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:14,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:14,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:14,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:14,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:14,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:14,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 141 transitions, 1757 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 04:23:14,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:14,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:14,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:14,806 INFO L124 PetriNetUnfolderBase]: 361/680 cut-off events. [2024-06-28 04:23:14,806 INFO L125 PetriNetUnfolderBase]: For 10777/10777 co-relation queries the response was YES. [2024-06-28 04:23:14,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4090 conditions, 680 events. 361/680 cut-off events. For 10777/10777 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3336 event pairs, 60 based on Foata normal form. 2/681 useless extension candidates. Maximal degree in co-relation 4022. Up to 601 conditions per place. [2024-06-28 04:23:14,811 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 129 selfloop transitions, 27 changer transitions 0/158 dead transitions. [2024-06-28 04:23:14,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 158 transitions, 2155 flow [2024-06-28 04:23:14,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:14,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-28 04:23:14,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-06-28 04:23:14,832 INFO L175 Difference]: Start difference. First operand has 167 places, 141 transitions, 1757 flow. Second operand 8 states and 100 transitions. [2024-06-28 04:23:14,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 158 transitions, 2155 flow [2024-06-28 04:23:14,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 158 transitions, 2052 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 04:23:14,861 INFO L231 Difference]: Finished difference. Result has 167 places, 143 transitions, 1759 flow [2024-06-28 04:23:14,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1654, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1759, PETRI_PLACES=167, PETRI_TRANSITIONS=143} [2024-06-28 04:23:14,862 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 139 predicate places. [2024-06-28 04:23:14,862 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 143 transitions, 1759 flow [2024-06-28 04:23:14,862 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 04:23:14,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:14,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:14,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 04:23:14,862 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 04:23:14,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:14,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1616987093, now seen corresponding path program 5 times [2024-06-28 04:23:14,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:14,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025955344] [2024-06-28 04:23:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:14,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:15,544 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 04:23:15,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:15,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025955344] [2024-06-28 04:23:15,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025955344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:15,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:15,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:15,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78826967] [2024-06-28 04:23:15,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:15,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:15,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:15,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:15,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:15,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 143 transitions, 1759 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 04:23:15,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:15,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:15,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:15,835 INFO L124 PetriNetUnfolderBase]: 358/673 cut-off events. [2024-06-28 04:23:15,836 INFO L125 PetriNetUnfolderBase]: For 9815/9815 co-relation queries the response was YES. [2024-06-28 04:23:15,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3957 conditions, 673 events. 358/673 cut-off events. For 9815/9815 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3284 event pairs, 110 based on Foata normal form. 2/674 useless extension candidates. Maximal degree in co-relation 3889. Up to 637 conditions per place. [2024-06-28 04:23:15,840 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 138 selfloop transitions, 10 changer transitions 0/150 dead transitions. [2024-06-28 04:23:15,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 150 transitions, 2071 flow [2024-06-28 04:23:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:23:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:23:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-28 04:23:15,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39655172413793105 [2024-06-28 04:23:15,841 INFO L175 Difference]: Start difference. First operand has 167 places, 143 transitions, 1759 flow. Second operand 6 states and 69 transitions. [2024-06-28 04:23:15,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 150 transitions, 2071 flow [2024-06-28 04:23:15,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 150 transitions, 1991 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:15,868 INFO L231 Difference]: Finished difference. Result has 168 places, 143 transitions, 1703 flow [2024-06-28 04:23:15,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1703, PETRI_PLACES=168, PETRI_TRANSITIONS=143} [2024-06-28 04:23:15,869 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 140 predicate places. [2024-06-28 04:23:15,869 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 143 transitions, 1703 flow [2024-06-28 04:23:15,869 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 04:23:15,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:15,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:15,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 04:23:15,870 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 04:23:15,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash 245956779, now seen corresponding path program 15 times [2024-06-28 04:23:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:15,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544348534] [2024-06-28 04:23:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:15,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:16,620 INFO 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 04:23:16,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:16,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544348534] [2024-06-28 04:23:16,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544348534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:16,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:16,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:16,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910850448] [2024-06-28 04:23:16,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:16,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:16,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:16,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:16,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:16,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:16,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 143 transitions, 1703 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 04:23:16,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:16,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:16,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:16,983 INFO L124 PetriNetUnfolderBase]: 354/667 cut-off events. [2024-06-28 04:23:16,983 INFO L125 PetriNetUnfolderBase]: For 8950/8950 co-relation queries the response was YES. [2024-06-28 04:23:16,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3782 conditions, 667 events. 354/667 cut-off events. For 8950/8950 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3259 event pairs, 54 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 3713. Up to 561 conditions per place. [2024-06-28 04:23:17,002 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 116 selfloop transitions, 40 changer transitions 0/158 dead transitions. [2024-06-28 04:23:17,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 158 transitions, 2059 flow [2024-06-28 04:23:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:17,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-28 04:23:17,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47783251231527096 [2024-06-28 04:23:17,003 INFO L175 Difference]: Start difference. First operand has 168 places, 143 transitions, 1703 flow. Second operand 7 states and 97 transitions. [2024-06-28 04:23:17,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 158 transitions, 2059 flow [2024-06-28 04:23:17,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 158 transitions, 1984 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:17,029 INFO L231 Difference]: Finished difference. Result has 169 places, 143 transitions, 1727 flow [2024-06-28 04:23:17,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1727, PETRI_PLACES=169, PETRI_TRANSITIONS=143} [2024-06-28 04:23:17,030 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 141 predicate places. [2024-06-28 04:23:17,030 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 143 transitions, 1727 flow [2024-06-28 04:23:17,030 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 04:23:17,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:17,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:17,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 04:23:17,031 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 04:23:17,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1174595267, now seen corresponding path program 1 times [2024-06-28 04:23:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:17,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829879174] [2024-06-28 04:23:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:17,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:17,729 INFO 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 04:23:17,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:17,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829879174] [2024-06-28 04:23:17,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829879174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:17,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:17,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:17,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919602626] [2024-06-28 04:23:17,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:17,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:17,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:17,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:17,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:17,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:17,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 143 transitions, 1727 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 04:23:17,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:17,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:17,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:18,233 INFO L124 PetriNetUnfolderBase]: 381/728 cut-off events. [2024-06-28 04:23:18,233 INFO L125 PetriNetUnfolderBase]: For 15307/15307 co-relation queries the response was YES. [2024-06-28 04:23:18,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4184 conditions, 728 events. 381/728 cut-off events. For 15307/15307 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3593 event pairs, 55 based on Foata normal form. 8/735 useless extension candidates. Maximal degree in co-relation 4115. Up to 304 conditions per place. [2024-06-28 04:23:18,238 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 81 selfloop transitions, 76 changer transitions 14/173 dead transitions. [2024-06-28 04:23:18,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 173 transitions, 2227 flow [2024-06-28 04:23:18,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:18,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:18,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 04:23:18,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43260188087774293 [2024-06-28 04:23:18,239 INFO L175 Difference]: Start difference. First operand has 169 places, 143 transitions, 1727 flow. Second operand 11 states and 138 transitions. [2024-06-28 04:23:18,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 173 transitions, 2227 flow [2024-06-28 04:23:18,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 173 transitions, 2110 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:18,270 INFO L231 Difference]: Finished difference. Result has 173 places, 140 transitions, 1746 flow [2024-06-28 04:23:18,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1746, PETRI_PLACES=173, PETRI_TRANSITIONS=140} [2024-06-28 04:23:18,270 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 145 predicate places. [2024-06-28 04:23:18,271 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 140 transitions, 1746 flow [2024-06-28 04:23:18,271 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 04:23:18,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:18,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:18,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 04:23:18,271 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 04:23:18,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash 476978985, now seen corresponding path program 2 times [2024-06-28 04:23:18,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:18,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489016255] [2024-06-28 04:23:18,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:18,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:19,005 INFO 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 04:23:19,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:19,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489016255] [2024-06-28 04:23:19,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489016255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:19,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:19,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:19,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528997512] [2024-06-28 04:23:19,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:19,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:19,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:19,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:19,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:19,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:19,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 140 transitions, 1746 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 04:23:19,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:19,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:19,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:19,431 INFO L124 PetriNetUnfolderBase]: 412/791 cut-off events. [2024-06-28 04:23:19,431 INFO L125 PetriNetUnfolderBase]: For 20515/20515 co-relation queries the response was YES. [2024-06-28 04:23:19,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4756 conditions, 791 events. 412/791 cut-off events. For 20515/20515 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4015 event pairs, 66 based on Foata normal form. 8/798 useless extension candidates. Maximal degree in co-relation 4687. Up to 439 conditions per place. [2024-06-28 04:23:19,435 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 96 selfloop transitions, 66 changer transitions 12/176 dead transitions. [2024-06-28 04:23:19,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 176 transitions, 2301 flow [2024-06-28 04:23:19,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:19,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 04:23:19,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2024-06-28 04:23:19,436 INFO L175 Difference]: Start difference. First operand has 173 places, 140 transitions, 1746 flow. Second operand 11 states and 143 transitions. [2024-06-28 04:23:19,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 176 transitions, 2301 flow [2024-06-28 04:23:19,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 176 transitions, 2155 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:19,477 INFO L231 Difference]: Finished difference. Result has 172 places, 139 transitions, 1728 flow [2024-06-28 04:23:19,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1728, PETRI_PLACES=172, PETRI_TRANSITIONS=139} [2024-06-28 04:23:19,478 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 144 predicate places. [2024-06-28 04:23:19,478 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 139 transitions, 1728 flow [2024-06-28 04:23:19,478 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 04:23:19,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:19,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:19,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 04:23:19,478 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 04:23:19,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:19,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1337731185, now seen corresponding path program 3 times [2024-06-28 04:23:19,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:19,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490010823] [2024-06-28 04:23:19,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:19,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:20,076 INFO 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 04:23:20,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:20,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490010823] [2024-06-28 04:23:20,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490010823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:20,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:20,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:20,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336180238] [2024-06-28 04:23:20,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:20,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:20,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:20,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:20,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:20,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:20,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 139 transitions, 1728 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 04:23:20,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:20,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:20,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:20,459 INFO L124 PetriNetUnfolderBase]: 413/800 cut-off events. [2024-06-28 04:23:20,460 INFO L125 PetriNetUnfolderBase]: For 25282/25282 co-relation queries the response was YES. [2024-06-28 04:23:20,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4740 conditions, 800 events. 413/800 cut-off events. For 25282/25282 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4097 event pairs, 81 based on Foata normal form. 20/819 useless extension candidates. Maximal degree in co-relation 4670. Up to 450 conditions per place. [2024-06-28 04:23:20,464 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 79 selfloop transitions, 62 changer transitions 18/161 dead transitions. [2024-06-28 04:23:20,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 161 transitions, 2122 flow [2024-06-28 04:23:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:20,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 04:23:20,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-06-28 04:23:20,465 INFO L175 Difference]: Start difference. First operand has 172 places, 139 transitions, 1728 flow. Second operand 10 states and 125 transitions. [2024-06-28 04:23:20,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 161 transitions, 2122 flow [2024-06-28 04:23:20,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 161 transitions, 2030 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:20,499 INFO L231 Difference]: Finished difference. Result has 171 places, 130 transitions, 1667 flow [2024-06-28 04:23:20,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1667, PETRI_PLACES=171, PETRI_TRANSITIONS=130} [2024-06-28 04:23:20,499 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 143 predicate places. [2024-06-28 04:23:20,500 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 130 transitions, 1667 flow [2024-06-28 04:23:20,500 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 04:23:20,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:20,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:20,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 04:23:20,501 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 04:23:20,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:20,501 INFO L85 PathProgramCache]: Analyzing trace with hash 478852935, now seen corresponding path program 4 times [2024-06-28 04:23:20,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:20,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723077788] [2024-06-28 04:23:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:20,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:21,187 INFO 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 04:23:21,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:21,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723077788] [2024-06-28 04:23:21,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723077788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:21,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:21,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:21,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887548473] [2024-06-28 04:23:21,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:21,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:21,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:21,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:21,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:21,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:21,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 130 transitions, 1667 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 04:23:21,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:21,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:21,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:21,604 INFO L124 PetriNetUnfolderBase]: 347/674 cut-off events. [2024-06-28 04:23:21,605 INFO L125 PetriNetUnfolderBase]: For 15332/15332 co-relation queries the response was YES. [2024-06-28 04:23:21,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4035 conditions, 674 events. 347/674 cut-off events. For 15332/15332 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3315 event pairs, 50 based on Foata normal form. 8/681 useless extension candidates. Maximal degree in co-relation 3967. Up to 427 conditions per place. [2024-06-28 04:23:21,609 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 80 selfloop transitions, 58 changer transitions 16/156 dead transitions. [2024-06-28 04:23:21,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 156 transitions, 2062 flow [2024-06-28 04:23:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 04:23:21,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106583072100313 [2024-06-28 04:23:21,610 INFO L175 Difference]: Start difference. First operand has 171 places, 130 transitions, 1667 flow. Second operand 11 states and 131 transitions. [2024-06-28 04:23:21,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 156 transitions, 2062 flow [2024-06-28 04:23:21,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 156 transitions, 1970 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:21,649 INFO L231 Difference]: Finished difference. Result has 172 places, 127 transitions, 1658 flow [2024-06-28 04:23:21,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1658, PETRI_PLACES=172, PETRI_TRANSITIONS=127} [2024-06-28 04:23:21,649 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 144 predicate places. [2024-06-28 04:23:21,650 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 127 transitions, 1658 flow [2024-06-28 04:23:21,650 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 04:23:21,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:21,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:21,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 04:23:21,650 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 04:23:21,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:21,651 INFO L85 PathProgramCache]: Analyzing trace with hash -651498361, now seen corresponding path program 5 times [2024-06-28 04:23:21,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:21,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675822584] [2024-06-28 04:23:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:21,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:22,237 INFO 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 04:23:22,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:22,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675822584] [2024-06-28 04:23:22,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675822584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:22,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:22,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:22,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009692681] [2024-06-28 04:23:22,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:22,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:22,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:22,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:22,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:22,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:22,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 127 transitions, 1658 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 04:23:22,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:22,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:22,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:22,637 INFO L124 PetriNetUnfolderBase]: 362/703 cut-off events. [2024-06-28 04:23:22,637 INFO L125 PetriNetUnfolderBase]: For 19473/19473 co-relation queries the response was YES. [2024-06-28 04:23:22,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4355 conditions, 703 events. 362/703 cut-off events. For 19473/19473 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3450 event pairs, 68 based on Foata normal form. 8/710 useless extension candidates. Maximal degree in co-relation 4286. Up to 452 conditions per place. [2024-06-28 04:23:22,641 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 103 selfloop transitions, 39 changer transitions 12/156 dead transitions. [2024-06-28 04:23:22,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 156 transitions, 2128 flow [2024-06-28 04:23:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:22,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 04:23:22,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263322884012539 [2024-06-28 04:23:22,645 INFO L175 Difference]: Start difference. First operand has 172 places, 127 transitions, 1658 flow. Second operand 11 states and 136 transitions. [2024-06-28 04:23:22,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 156 transitions, 2128 flow [2024-06-28 04:23:22,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 156 transitions, 1917 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 04:23:22,679 INFO L231 Difference]: Finished difference. Result has 165 places, 124 transitions, 1496 flow [2024-06-28 04:23:22,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1496, PETRI_PLACES=165, PETRI_TRANSITIONS=124} [2024-06-28 04:23:22,680 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 137 predicate places. [2024-06-28 04:23:22,680 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 124 transitions, 1496 flow [2024-06-28 04:23:22,680 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 04:23:22,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:22,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:22,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 04:23:22,681 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 04:23:22,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:22,681 INFO L85 PathProgramCache]: Analyzing trace with hash -649624411, now seen corresponding path program 6 times [2024-06-28 04:23:22,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:22,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321904026] [2024-06-28 04:23:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:22,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:23,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:23,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321904026] [2024-06-28 04:23:23,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321904026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:23,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:23,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:23,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127542986] [2024-06-28 04:23:23,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:23,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:23,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:23,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:23,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:23,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:23,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 124 transitions, 1496 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 04:23:23,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:23,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:23,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:23,859 INFO L124 PetriNetUnfolderBase]: 350/681 cut-off events. [2024-06-28 04:23:23,859 INFO L125 PetriNetUnfolderBase]: For 17748/17748 co-relation queries the response was YES. [2024-06-28 04:23:23,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4094 conditions, 681 events. 350/681 cut-off events. For 17748/17748 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3316 event pairs, 68 based on Foata normal form. 8/688 useless extension candidates. Maximal degree in co-relation 4027. Up to 508 conditions per place. [2024-06-28 04:23:23,864 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 94 selfloop transitions, 37 changer transitions 14/147 dead transitions. [2024-06-28 04:23:23,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 147 transitions, 1858 flow [2024-06-28 04:23:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 04:23:23,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4043887147335423 [2024-06-28 04:23:23,865 INFO L175 Difference]: Start difference. First operand has 165 places, 124 transitions, 1496 flow. Second operand 11 states and 129 transitions. [2024-06-28 04:23:23,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 147 transitions, 1858 flow [2024-06-28 04:23:23,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 147 transitions, 1788 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:23,895 INFO L231 Difference]: Finished difference. Result has 164 places, 120 transitions, 1445 flow [2024-06-28 04:23:23,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1445, PETRI_PLACES=164, PETRI_TRANSITIONS=120} [2024-06-28 04:23:23,896 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 136 predicate places. [2024-06-28 04:23:23,896 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 120 transitions, 1445 flow [2024-06-28 04:23:23,896 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 04:23:23,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:23,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:23,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 04:23:23,896 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 04:23:23,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:23,897 INFO L85 PathProgramCache]: Analyzing trace with hash 292374053, now seen corresponding path program 7 times [2024-06-28 04:23:23,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:23,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780547859] [2024-06-28 04:23:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:23,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:24,601 INFO 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 04:23:24,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:24,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780547859] [2024-06-28 04:23:24,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780547859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:24,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:24,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:24,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675164232] [2024-06-28 04:23:24,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:24,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:24,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:24,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:24,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:24,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:24,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 120 transitions, 1445 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 04:23:24,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:24,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:24,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:25,088 INFO L124 PetriNetUnfolderBase]: 319/617 cut-off events. [2024-06-28 04:23:25,088 INFO L125 PetriNetUnfolderBase]: For 13916/13916 co-relation queries the response was YES. [2024-06-28 04:23:25,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 617 events. 319/617 cut-off events. For 13916/13916 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2903 event pairs, 51 based on Foata normal form. 8/624 useless extension candidates. Maximal degree in co-relation 3538. Up to 477 conditions per place. [2024-06-28 04:23:25,092 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 96 selfloop transitions, 26 changer transitions 18/142 dead transitions. [2024-06-28 04:23:25,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 142 transitions, 1793 flow [2024-06-28 04:23:25,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:25,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 04:23:25,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3887147335423197 [2024-06-28 04:23:25,093 INFO L175 Difference]: Start difference. First operand has 164 places, 120 transitions, 1445 flow. Second operand 11 states and 124 transitions. [2024-06-28 04:23:25,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 142 transitions, 1793 flow [2024-06-28 04:23:25,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 142 transitions, 1658 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 04:23:25,120 INFO L231 Difference]: Finished difference. Result has 159 places, 115 transitions, 1309 flow [2024-06-28 04:23:25,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1309, PETRI_PLACES=159, PETRI_TRANSITIONS=115} [2024-06-28 04:23:25,120 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 131 predicate places. [2024-06-28 04:23:25,120 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 115 transitions, 1309 flow [2024-06-28 04:23:25,121 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 04:23:25,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:25,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:25,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 04:23:25,121 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 04:23:25,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:25,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1936392391, now seen corresponding path program 8 times [2024-06-28 04:23:25,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:25,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134624671] [2024-06-28 04:23:25,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:25,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:25,853 INFO 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 04:23:25,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:25,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134624671] [2024-06-28 04:23:25,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134624671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:25,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:25,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:25,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90936903] [2024-06-28 04:23:25,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:25,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:25,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:25,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:25,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 115 transitions, 1309 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 04:23:25,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:25,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:25,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:26,302 INFO L124 PetriNetUnfolderBase]: 340/656 cut-off events. [2024-06-28 04:23:26,302 INFO L125 PetriNetUnfolderBase]: For 17244/17244 co-relation queries the response was YES. [2024-06-28 04:23:26,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3891 conditions, 656 events. 340/656 cut-off events. For 17244/17244 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3125 event pairs, 68 based on Foata normal form. 8/663 useless extension candidates. Maximal degree in co-relation 3828. Up to 350 conditions per place. [2024-06-28 04:23:26,306 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 93 selfloop transitions, 38 changer transitions 12/145 dead transitions. [2024-06-28 04:23:26,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 145 transitions, 1763 flow [2024-06-28 04:23:26,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 04:23:26,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43573667711598746 [2024-06-28 04:23:26,307 INFO L175 Difference]: Start difference. First operand has 159 places, 115 transitions, 1309 flow. Second operand 11 states and 139 transitions. [2024-06-28 04:23:26,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 145 transitions, 1763 flow [2024-06-28 04:23:26,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 145 transitions, 1606 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-28 04:23:26,335 INFO L231 Difference]: Finished difference. Result has 147 places, 112 transitions, 1199 flow [2024-06-28 04:23:26,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1199, PETRI_PLACES=147, PETRI_TRANSITIONS=112} [2024-06-28 04:23:26,336 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 119 predicate places. [2024-06-28 04:23:26,336 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 112 transitions, 1199 flow [2024-06-28 04:23:26,336 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 04:23:26,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:26,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:26,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 04:23:26,337 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 04:23:26,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:26,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1229463849, now seen corresponding path program 9 times [2024-06-28 04:23:26,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:26,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985197532] [2024-06-28 04:23:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:26,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:27,011 INFO 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 04:23:27,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:27,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985197532] [2024-06-28 04:23:27,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985197532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:27,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:27,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:27,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294886020] [2024-06-28 04:23:27,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:27,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:27,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:27,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:27,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:27,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:27,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 112 transitions, 1199 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 04:23:27,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:27,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:27,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:27,458 INFO L124 PetriNetUnfolderBase]: 357/693 cut-off events. [2024-06-28 04:23:27,458 INFO L125 PetriNetUnfolderBase]: For 20306/20306 co-relation queries the response was YES. [2024-06-28 04:23:27,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4108 conditions, 693 events. 357/693 cut-off events. For 20306/20306 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3379 event pairs, 75 based on Foata normal form. 8/700 useless extension candidates. Maximal degree in co-relation 4049. Up to 441 conditions per place. [2024-06-28 04:23:27,462 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 93 selfloop transitions, 38 changer transitions 8/141 dead transitions. [2024-06-28 04:23:27,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 141 transitions, 1641 flow [2024-06-28 04:23:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 04:23:27,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43573667711598746 [2024-06-28 04:23:27,463 INFO L175 Difference]: Start difference. First operand has 147 places, 112 transitions, 1199 flow. Second operand 11 states and 139 transitions. [2024-06-28 04:23:27,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 141 transitions, 1641 flow [2024-06-28 04:23:27,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 141 transitions, 1552 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 04:23:27,489 INFO L231 Difference]: Finished difference. Result has 145 places, 110 transitions, 1167 flow [2024-06-28 04:23:27,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1167, PETRI_PLACES=145, PETRI_TRANSITIONS=110} [2024-06-28 04:23:27,490 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 117 predicate places. [2024-06-28 04:23:27,491 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 110 transitions, 1167 flow [2024-06-28 04:23:27,491 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 04:23:27,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:27,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:27,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 04:23:27,491 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 04:23:27,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:27,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1051313619, now seen corresponding path program 10 times [2024-06-28 04:23:27,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:27,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221146881] [2024-06-28 04:23:27,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:27,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:28,298 INFO 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 04:23:28,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:28,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221146881] [2024-06-28 04:23:28,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221146881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:28,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:28,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:28,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175277724] [2024-06-28 04:23:28,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:28,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:28,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:28,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:28,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:28,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:28,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 110 transitions, 1167 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 04:23:28,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:28,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:28,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:28,756 INFO L124 PetriNetUnfolderBase]: 326/632 cut-off events. [2024-06-28 04:23:28,757 INFO L125 PetriNetUnfolderBase]: For 16915/16915 co-relation queries the response was YES. [2024-06-28 04:23:28,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3615 conditions, 632 events. 326/632 cut-off events. For 16915/16915 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2981 event pairs, 72 based on Foata normal form. 10/641 useless extension candidates. Maximal degree in co-relation 3557. Up to 441 conditions per place. [2024-06-28 04:23:28,759 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 82 selfloop transitions, 34 changer transitions 16/134 dead transitions. [2024-06-28 04:23:28,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 134 transitions, 1515 flow [2024-06-28 04:23:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 04:23:28,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169278996865204 [2024-06-28 04:23:28,761 INFO L175 Difference]: Start difference. First operand has 145 places, 110 transitions, 1167 flow. Second operand 11 states and 133 transitions. [2024-06-28 04:23:28,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 134 transitions, 1515 flow [2024-06-28 04:23:28,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 134 transitions, 1433 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 04:23:28,782 INFO L231 Difference]: Finished difference. Result has 145 places, 105 transitions, 1094 flow [2024-06-28 04:23:28,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1094, PETRI_PLACES=145, PETRI_TRANSITIONS=105} [2024-06-28 04:23:28,783 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 117 predicate places. [2024-06-28 04:23:28,783 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 105 transitions, 1094 flow [2024-06-28 04:23:28,783 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 04:23:28,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:28,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:28,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 04:23:28,783 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 04:23:28,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:28,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2024958151, now seen corresponding path program 11 times [2024-06-28 04:23:28,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:28,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556153426] [2024-06-28 04:23:28,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:28,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:29,488 INFO 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 04:23:29,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:29,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556153426] [2024-06-28 04:23:29,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556153426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:29,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:29,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:29,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970181951] [2024-06-28 04:23:29,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:29,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:29,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:29,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:29,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:29,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:29,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 105 transitions, 1094 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 04:23:29,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:29,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:29,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:29,872 INFO L124 PetriNetUnfolderBase]: 340/663 cut-off events. [2024-06-28 04:23:29,872 INFO L125 PetriNetUnfolderBase]: For 18978/18978 co-relation queries the response was YES. [2024-06-28 04:23:29,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3872 conditions, 663 events. 340/663 cut-off events. For 18978/18978 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3190 event pairs, 83 based on Foata normal form. 8/670 useless extension candidates. Maximal degree in co-relation 3815. Up to 434 conditions per place. [2024-06-28 04:23:29,876 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 91 selfloop transitions, 31 changer transitions 8/132 dead transitions. [2024-06-28 04:23:29,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 132 transitions, 1508 flow [2024-06-28 04:23:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:29,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:29,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 04:23:29,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200626959247649 [2024-06-28 04:23:29,881 INFO L175 Difference]: Start difference. First operand has 145 places, 105 transitions, 1094 flow. Second operand 11 states and 134 transitions. [2024-06-28 04:23:29,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 132 transitions, 1508 flow [2024-06-28 04:23:29,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 132 transitions, 1399 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-28 04:23:29,904 INFO L231 Difference]: Finished difference. Result has 139 places, 103 transitions, 1033 flow [2024-06-28 04:23:29,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1033, PETRI_PLACES=139, PETRI_TRANSITIONS=103} [2024-06-28 04:23:29,904 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 111 predicate places. [2024-06-28 04:23:29,904 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 103 transitions, 1033 flow [2024-06-28 04:23:29,905 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 04:23:29,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:29,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:29,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 04:23:29,905 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 04:23:29,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2024961871, now seen corresponding path program 12 times [2024-06-28 04:23:29,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:29,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408219175] [2024-06-28 04:23:29,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:29,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:30,774 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 04:23:30,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:30,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408219175] [2024-06-28 04:23:30,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408219175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:30,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:30,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:30,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269077986] [2024-06-28 04:23:30,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:30,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:30,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:30,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:30,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:30,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:30,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 103 transitions, 1033 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 04:23:30,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:30,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:30,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:31,274 INFO L124 PetriNetUnfolderBase]: 309/602 cut-off events. [2024-06-28 04:23:31,274 INFO L125 PetriNetUnfolderBase]: For 14769/14769 co-relation queries the response was YES. [2024-06-28 04:23:31,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3321 conditions, 602 events. 309/602 cut-off events. For 14769/14769 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2820 event pairs, 70 based on Foata normal form. 10/611 useless extension candidates. Maximal degree in co-relation 3266. Up to 459 conditions per place. [2024-06-28 04:23:31,277 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 85 selfloop transitions, 20 changer transitions 18/125 dead transitions. [2024-06-28 04:23:31,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 125 transitions, 1355 flow [2024-06-28 04:23:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:31,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 04:23:31,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949843260188088 [2024-06-28 04:23:31,278 INFO L175 Difference]: Start difference. First operand has 139 places, 103 transitions, 1033 flow. Second operand 11 states and 126 transitions. [2024-06-28 04:23:31,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 125 transitions, 1355 flow [2024-06-28 04:23:31,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 125 transitions, 1291 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:31,295 INFO L231 Difference]: Finished difference. Result has 139 places, 97 transitions, 944 flow [2024-06-28 04:23:31,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=944, PETRI_PLACES=139, PETRI_TRANSITIONS=97} [2024-06-28 04:23:31,296 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 111 predicate places. [2024-06-28 04:23:31,296 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 97 transitions, 944 flow [2024-06-28 04:23:31,296 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 04:23:31,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:31,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:31,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 04:23:31,296 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 04:23:31,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:31,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2054445075, now seen corresponding path program 1 times [2024-06-28 04:23:31,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:31,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127600955] [2024-06-28 04:23:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:31,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:32,152 INFO 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 04:23:32,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:32,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127600955] [2024-06-28 04:23:32,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127600955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:32,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:32,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:32,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737988644] [2024-06-28 04:23:32,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:32,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:32,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:32,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:32,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:32,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:32,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 97 transitions, 944 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 04:23:32,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:32,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:32,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:32,509 INFO L124 PetriNetUnfolderBase]: 285/551 cut-off events. [2024-06-28 04:23:32,509 INFO L125 PetriNetUnfolderBase]: For 11732/11732 co-relation queries the response was YES. [2024-06-28 04:23:32,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 551 events. 285/551 cut-off events. For 11732/11732 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2498 event pairs, 60 based on Foata normal form. 2/552 useless extension candidates. Maximal degree in co-relation 3019. Up to 475 conditions per place. [2024-06-28 04:23:32,512 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 89 selfloop transitions, 23 changer transitions 1/115 dead transitions. [2024-06-28 04:23:32,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 115 transitions, 1220 flow [2024-06-28 04:23:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:32,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 04:23:32,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36990595611285265 [2024-06-28 04:23:32,513 INFO L175 Difference]: Start difference. First operand has 139 places, 97 transitions, 944 flow. Second operand 11 states and 118 transitions. [2024-06-28 04:23:32,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 115 transitions, 1220 flow [2024-06-28 04:23:32,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 115 transitions, 1164 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:32,535 INFO L231 Difference]: Finished difference. Result has 133 places, 98 transitions, 946 flow [2024-06-28 04:23:32,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=946, PETRI_PLACES=133, PETRI_TRANSITIONS=98} [2024-06-28 04:23:32,537 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 105 predicate places. [2024-06-28 04:23:32,537 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 98 transitions, 946 flow [2024-06-28 04:23:32,537 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 04:23:32,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:32,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:32,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 04:23:32,538 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 04:23:32,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:32,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1304017125, now seen corresponding path program 13 times [2024-06-28 04:23:32,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:32,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242427312] [2024-06-28 04:23:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:32,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:33,263 INFO 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 04:23:33,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:33,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242427312] [2024-06-28 04:23:33,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242427312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:33,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:33,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:33,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556834576] [2024-06-28 04:23:33,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:33,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:33,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:33,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:33,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:33,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:33,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 98 transitions, 946 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 04:23:33,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:33,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:33,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:33,620 INFO L124 PetriNetUnfolderBase]: 297/579 cut-off events. [2024-06-28 04:23:33,620 INFO L125 PetriNetUnfolderBase]: For 13822/13822 co-relation queries the response was YES. [2024-06-28 04:23:33,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3157 conditions, 579 events. 297/579 cut-off events. For 13822/13822 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2677 event pairs, 59 based on Foata normal form. 8/586 useless extension candidates. Maximal degree in co-relation 3103. Up to 399 conditions per place. [2024-06-28 04:23:33,623 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 89 selfloop transitions, 25 changer transitions 8/124 dead transitions. [2024-06-28 04:23:33,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 124 transitions, 1338 flow [2024-06-28 04:23:33,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 04:23:33,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40752351097178685 [2024-06-28 04:23:33,623 INFO L175 Difference]: Start difference. First operand has 133 places, 98 transitions, 946 flow. Second operand 11 states and 130 transitions. [2024-06-28 04:23:33,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 124 transitions, 1338 flow [2024-06-28 04:23:33,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 124 transitions, 1290 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:33,642 INFO L231 Difference]: Finished difference. Result has 135 places, 96 transitions, 930 flow [2024-06-28 04:23:33,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=930, PETRI_PLACES=135, PETRI_TRANSITIONS=96} [2024-06-28 04:23:33,642 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 107 predicate places. [2024-06-28 04:23:33,642 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 96 transitions, 930 flow [2024-06-28 04:23:33,642 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 04:23:33,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:33,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:33,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 04:23:33,643 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 04:23:33,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:33,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1304020845, now seen corresponding path program 14 times [2024-06-28 04:23:33,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:33,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898589693] [2024-06-28 04:23:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:33,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:34,348 INFO 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 04:23:34,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:34,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898589693] [2024-06-28 04:23:34,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898589693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:34,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:34,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:34,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295817818] [2024-06-28 04:23:34,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:34,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:34,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:34,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:34,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:34,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:34,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 96 transitions, 930 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 04:23:34,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:34,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:34,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:34,677 INFO L124 PetriNetUnfolderBase]: 266/518 cut-off events. [2024-06-28 04:23:34,677 INFO L125 PetriNetUnfolderBase]: For 11761/11761 co-relation queries the response was YES. [2024-06-28 04:23:34,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 518 events. 266/518 cut-off events. For 11761/11761 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2315 event pairs, 48 based on Foata normal form. 10/527 useless extension candidates. Maximal degree in co-relation 2659. Up to 414 conditions per place. [2024-06-28 04:23:34,680 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 84 selfloop transitions, 15 changer transitions 16/117 dead transitions. [2024-06-28 04:23:34,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 117 transitions, 1232 flow [2024-06-28 04:23:34,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:34,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 04:23:34,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824451410658307 [2024-06-28 04:23:34,681 INFO L175 Difference]: Start difference. First operand has 135 places, 96 transitions, 930 flow. Second operand 11 states and 122 transitions. [2024-06-28 04:23:34,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 117 transitions, 1232 flow [2024-06-28 04:23:34,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 117 transitions, 1165 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 04:23:34,698 INFO L231 Difference]: Finished difference. Result has 134 places, 91 transitions, 847 flow [2024-06-28 04:23:34,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=847, PETRI_PLACES=134, PETRI_TRANSITIONS=91} [2024-06-28 04:23:34,698 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 106 predicate places. [2024-06-28 04:23:34,698 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 91 transitions, 847 flow [2024-06-28 04:23:34,699 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 04:23:34,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:34,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:34,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 04:23:34,699 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 04:23:34,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1311832681, now seen corresponding path program 15 times [2024-06-28 04:23:34,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:34,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705865383] [2024-06-28 04:23:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:34,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:35,262 INFO 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 04:23:35,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:35,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705865383] [2024-06-28 04:23:35,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705865383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:35,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:35,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:35,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118896687] [2024-06-28 04:23:35,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:35,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:35,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:35,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:35,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:35,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:35,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 91 transitions, 847 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 04:23:35,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:35,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:35,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:35,529 INFO L124 PetriNetUnfolderBase]: 252/492 cut-off events. [2024-06-28 04:23:35,529 INFO L125 PetriNetUnfolderBase]: For 10862/10862 co-relation queries the response was YES. [2024-06-28 04:23:35,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 492 events. 252/492 cut-off events. For 10862/10862 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2161 event pairs, 45 based on Foata normal form. 8/499 useless extension candidates. Maximal degree in co-relation 2484. Up to 157 conditions per place. [2024-06-28 04:23:35,531 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 55 selfloop transitions, 47 changer transitions 14/118 dead transitions. [2024-06-28 04:23:35,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 118 transitions, 1221 flow [2024-06-28 04:23:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:35,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:35,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 04:23:35,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-06-28 04:23:35,536 INFO L175 Difference]: Start difference. First operand has 134 places, 91 transitions, 847 flow. Second operand 10 states and 125 transitions. [2024-06-28 04:23:35,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 118 transitions, 1221 flow [2024-06-28 04:23:35,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 118 transitions, 1151 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:35,549 INFO L231 Difference]: Finished difference. Result has 126 places, 88 transitions, 851 flow [2024-06-28 04:23:35,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=851, PETRI_PLACES=126, PETRI_TRANSITIONS=88} [2024-06-28 04:23:35,549 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 98 predicate places. [2024-06-28 04:23:35,550 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 88 transitions, 851 flow [2024-06-28 04:23:35,550 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 04:23:35,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:35,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:35,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 04:23:35,550 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 04:23:35,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:35,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1534732043, now seen corresponding path program 16 times [2024-06-28 04:23:35,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:35,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043558156] [2024-06-28 04:23:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:35,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:36,226 INFO 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 04:23:36,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:36,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043558156] [2024-06-28 04:23:36,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043558156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:36,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:36,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:36,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676613863] [2024-06-28 04:23:36,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:36,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:36,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:36,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:36,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:36,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:36,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 88 transitions, 851 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 04:23:36,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:36,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:36,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:36,634 INFO L124 PetriNetUnfolderBase]: 267/523 cut-off events. [2024-06-28 04:23:36,635 INFO L125 PetriNetUnfolderBase]: For 14836/14836 co-relation queries the response was YES. [2024-06-28 04:23:36,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2914 conditions, 523 events. 267/523 cut-off events. For 14836/14836 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2350 event pairs, 58 based on Foata normal form. 8/530 useless extension candidates. Maximal degree in co-relation 2861. Up to 246 conditions per place. [2024-06-28 04:23:36,637 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 57 selfloop transitions, 47 changer transitions 9/115 dead transitions. [2024-06-28 04:23:36,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 115 transitions, 1231 flow [2024-06-28 04:23:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:36,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 04:23:36,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4379310344827586 [2024-06-28 04:23:36,638 INFO L175 Difference]: Start difference. First operand has 126 places, 88 transitions, 851 flow. Second operand 10 states and 127 transitions. [2024-06-28 04:23:36,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 115 transitions, 1231 flow [2024-06-28 04:23:36,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 115 transitions, 1133 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:36,653 INFO L231 Difference]: Finished difference. Result has 123 places, 86 transitions, 839 flow [2024-06-28 04:23:36,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=839, PETRI_PLACES=123, PETRI_TRANSITIONS=86} [2024-06-28 04:23:36,654 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 95 predicate places. [2024-06-28 04:23:36,654 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 86 transitions, 839 flow [2024-06-28 04:23:36,654 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 04:23:36,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:36,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:36,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 04:23:36,654 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 04:23:36,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:36,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1534735763, now seen corresponding path program 17 times [2024-06-28 04:23:36,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:36,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843821804] [2024-06-28 04:23:36,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:36,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:37,410 INFO 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 04:23:37,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:37,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843821804] [2024-06-28 04:23:37,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843821804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:37,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:37,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:37,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374453878] [2024-06-28 04:23:37,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:37,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:37,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:37,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:37,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:37,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:37,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 86 transitions, 839 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 04:23:37,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:37,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:37,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:37,714 INFO L124 PetriNetUnfolderBase]: 236/462 cut-off events. [2024-06-28 04:23:37,714 INFO L125 PetriNetUnfolderBase]: For 10972/10972 co-relation queries the response was YES. [2024-06-28 04:23:37,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2459 conditions, 462 events. 236/462 cut-off events. For 10972/10972 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2005 event pairs, 49 based on Foata normal form. 10/471 useless extension candidates. Maximal degree in co-relation 2408. Up to 246 conditions per place. [2024-06-28 04:23:37,716 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 46 selfloop transitions, 43 changer transitions 17/108 dead transitions. [2024-06-28 04:23:37,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 108 transitions, 1127 flow [2024-06-28 04:23:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:37,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 04:23:37,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-06-28 04:23:37,717 INFO L175 Difference]: Start difference. First operand has 123 places, 86 transitions, 839 flow. Second operand 10 states and 121 transitions. [2024-06-28 04:23:37,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 108 transitions, 1127 flow [2024-06-28 04:23:37,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 108 transitions, 1031 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:37,729 INFO L231 Difference]: Finished difference. Result has 122 places, 81 transitions, 787 flow [2024-06-28 04:23:37,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=787, PETRI_PLACES=122, PETRI_TRANSITIONS=81} [2024-06-28 04:23:37,729 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 94 predicate places. [2024-06-28 04:23:37,729 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 81 transitions, 787 flow [2024-06-28 04:23:37,730 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 04:23:37,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:37,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:37,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 04:23:37,730 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 04:23:37,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:37,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1578035393, now seen corresponding path program 18 times [2024-06-28 04:23:37,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:37,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092585953] [2024-06-28 04:23:37,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:37,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:38,349 INFO 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 04:23:38,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:38,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092585953] [2024-06-28 04:23:38,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092585953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:38,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:38,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:38,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593393693] [2024-06-28 04:23:38,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:38,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:38,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:38,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:38,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:38,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:38,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 81 transitions, 787 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 04:23:38,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:38,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:38,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:38,651 INFO L124 PetriNetUnfolderBase]: 249/490 cut-off events. [2024-06-28 04:23:38,652 INFO L125 PetriNetUnfolderBase]: For 12885/12885 co-relation queries the response was YES. [2024-06-28 04:23:38,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2720 conditions, 490 events. 249/490 cut-off events. For 12885/12885 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2165 event pairs, 58 based on Foata normal form. 8/497 useless extension candidates. Maximal degree in co-relation 2670. Up to 272 conditions per place. [2024-06-28 04:23:38,654 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 64 selfloop transitions, 31 changer transitions 8/105 dead transitions. [2024-06-28 04:23:38,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 105 transitions, 1133 flow [2024-06-28 04:23:38,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 04:23:38,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-06-28 04:23:38,655 INFO L175 Difference]: Start difference. First operand has 122 places, 81 transitions, 787 flow. Second operand 10 states and 121 transitions. [2024-06-28 04:23:38,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 105 transitions, 1133 flow [2024-06-28 04:23:38,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 105 transitions, 1031 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:38,666 INFO L231 Difference]: Finished difference. Result has 116 places, 79 transitions, 741 flow [2024-06-28 04:23:38,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=741, PETRI_PLACES=116, PETRI_TRANSITIONS=79} [2024-06-28 04:23:38,667 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 88 predicate places. [2024-06-28 04:23:38,667 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 79 transitions, 741 flow [2024-06-28 04:23:38,667 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 04:23:38,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:38,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:38,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 04:23:38,668 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 04:23:38,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:38,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1400402161, now seen corresponding path program 19 times [2024-06-28 04:23:38,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:38,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109236347] [2024-06-28 04:23:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:38,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:39,374 INFO 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 04:23:39,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:39,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109236347] [2024-06-28 04:23:39,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109236347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:39,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:39,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:39,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121021154] [2024-06-28 04:23:39,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:39,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:39,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:39,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:39,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:39,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 79 transitions, 741 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 04:23:39,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:39,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:39,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:39,676 INFO L124 PetriNetUnfolderBase]: 218/429 cut-off events. [2024-06-28 04:23:39,676 INFO L125 PetriNetUnfolderBase]: For 8818/8818 co-relation queries the response was YES. [2024-06-28 04:23:39,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 429 events. 218/429 cut-off events. For 8818/8818 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1810 event pairs, 49 based on Foata normal form. 10/438 useless extension candidates. Maximal degree in co-relation 2154. Up to 272 conditions per place. [2024-06-28 04:23:39,678 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 52 selfloop transitions, 26 changer transitions 18/98 dead transitions. [2024-06-28 04:23:39,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 98 transitions, 999 flow [2024-06-28 04:23:39,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:39,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 04:23:39,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39655172413793105 [2024-06-28 04:23:39,679 INFO L175 Difference]: Start difference. First operand has 116 places, 79 transitions, 741 flow. Second operand 10 states and 115 transitions. [2024-06-28 04:23:39,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 98 transitions, 999 flow [2024-06-28 04:23:39,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 98 transitions, 929 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 04:23:39,688 INFO L231 Difference]: Finished difference. Result has 114 places, 73 transitions, 673 flow [2024-06-28 04:23:39,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=673, PETRI_PLACES=114, PETRI_TRANSITIONS=73} [2024-06-28 04:23:39,689 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 86 predicate places. [2024-06-28 04:23:39,689 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 73 transitions, 673 flow [2024-06-28 04:23:39,689 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 04:23:39,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:39,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:39,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 04:23:39,689 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 04:23:39,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:39,690 INFO L85 PathProgramCache]: Analyzing trace with hash 685182867, now seen corresponding path program 2 times [2024-06-28 04:23:39,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:39,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782274398] [2024-06-28 04:23:39,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:39,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:40,463 INFO 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 04:23:40,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:40,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782274398] [2024-06-28 04:23:40,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782274398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:40,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:40,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:40,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601669323] [2024-06-28 04:23:40,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:40,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:40,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:40,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:40,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:40,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:40,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 73 transitions, 673 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 04:23:40,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:40,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:40,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:40,767 INFO L124 PetriNetUnfolderBase]: 193/375 cut-off events. [2024-06-28 04:23:40,768 INFO L125 PetriNetUnfolderBase]: For 5681/5681 co-relation queries the response was YES. [2024-06-28 04:23:40,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 375 events. 193/375 cut-off events. For 5681/5681 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1503 event pairs, 36 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1885. Up to 294 conditions per place. [2024-06-28 04:23:40,769 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 64 selfloop transitions, 21 changer transitions 0/87 dead transitions. [2024-06-28 04:23:40,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 87 transitions, 883 flow [2024-06-28 04:23:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 04:23:40,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-28 04:23:40,771 INFO L175 Difference]: Start difference. First operand has 114 places, 73 transitions, 673 flow. Second operand 10 states and 105 transitions. [2024-06-28 04:23:40,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 87 transitions, 883 flow [2024-06-28 04:23:40,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 87 transitions, 816 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 04:23:40,778 INFO L231 Difference]: Finished difference. Result has 105 places, 74 transitions, 664 flow [2024-06-28 04:23:40,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=664, PETRI_PLACES=105, PETRI_TRANSITIONS=74} [2024-06-28 04:23:40,779 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 77 predicate places. [2024-06-28 04:23:40,779 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 74 transitions, 664 flow [2024-06-28 04:23:40,779 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 04:23:40,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:40,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:40,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 04:23:40,780 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 04:23:40,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:40,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1561749877, now seen corresponding path program 20 times [2024-06-28 04:23:40,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:40,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141211186] [2024-06-28 04:23:40,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:40,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:41,564 INFO 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 04:23:41,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:41,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141211186] [2024-06-28 04:23:41,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141211186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:41,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:41,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:41,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747385665] [2024-06-28 04:23:41,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:41,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:41,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:41,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:41,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:41,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:41,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 74 transitions, 664 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 04:23:41,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:41,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:41,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:41,962 INFO L124 PetriNetUnfolderBase]: 234/462 cut-off events. [2024-06-28 04:23:41,963 INFO L125 PetriNetUnfolderBase]: For 7246/7246 co-relation queries the response was YES. [2024-06-28 04:23:41,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2308 conditions, 462 events. 234/462 cut-off events. For 7246/7246 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2007 event pairs, 51 based on Foata normal form. 8/469 useless extension candidates. Maximal degree in co-relation 2265. Up to 282 conditions per place. [2024-06-28 04:23:41,965 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 64 selfloop transitions, 23 changer transitions 7/96 dead transitions. [2024-06-28 04:23:41,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 96 transitions, 970 flow [2024-06-28 04:23:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:41,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 04:23:41,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2024-06-28 04:23:41,966 INFO L175 Difference]: Start difference. First operand has 105 places, 74 transitions, 664 flow. Second operand 10 states and 118 transitions. [2024-06-28 04:23:41,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 96 transitions, 970 flow [2024-06-28 04:23:41,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 96 transitions, 922 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 04:23:41,973 INFO L231 Difference]: Finished difference. Result has 107 places, 72 transitions, 652 flow [2024-06-28 04:23:41,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=652, PETRI_PLACES=107, PETRI_TRANSITIONS=72} [2024-06-28 04:23:41,974 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 79 predicate places. [2024-06-28 04:23:41,974 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 72 transitions, 652 flow [2024-06-28 04:23:41,974 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 04:23:41,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:41,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:41,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 04:23:41,974 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 04:23:41,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:41,975 INFO L85 PathProgramCache]: Analyzing trace with hash 900486547, now seen corresponding path program 21 times [2024-06-28 04:23:41,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:41,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236355921] [2024-06-28 04:23:41,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:41,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:42,743 INFO 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 04:23:42,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:42,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236355921] [2024-06-28 04:23:42,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236355921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:42,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:42,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:42,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001411365] [2024-06-28 04:23:42,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:42,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:42,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:42,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:42,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:42,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:42,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 72 transitions, 652 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 04:23:42,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:42,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:42,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:43,108 INFO L124 PetriNetUnfolderBase]: 203/401 cut-off events. [2024-06-28 04:23:43,109 INFO L125 PetriNetUnfolderBase]: For 5837/5837 co-relation queries the response was YES. [2024-06-28 04:23:43,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1935 conditions, 401 events. 203/401 cut-off events. For 5837/5837 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1651 event pairs, 42 based on Foata normal form. 10/410 useless extension candidates. Maximal degree in co-relation 1891. Up to 282 conditions per place. [2024-06-28 04:23:43,110 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 53 selfloop transitions, 20 changer transitions 15/90 dead transitions. [2024-06-28 04:23:43,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 90 transitions, 888 flow [2024-06-28 04:23:43,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:43,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 04:23:43,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761755485893417 [2024-06-28 04:23:43,111 INFO L175 Difference]: Start difference. First operand has 107 places, 72 transitions, 652 flow. Second operand 11 states and 120 transitions. [2024-06-28 04:23:43,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 90 transitions, 888 flow [2024-06-28 04:23:43,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 90 transitions, 840 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:43,118 INFO L231 Difference]: Finished difference. Result has 107 places, 67 transitions, 605 flow [2024-06-28 04:23:43,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=605, PETRI_PLACES=107, PETRI_TRANSITIONS=67} [2024-06-28 04:23:43,119 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 79 predicate places. [2024-06-28 04:23:43,119 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 67 transitions, 605 flow [2024-06-28 04:23:43,119 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 04:23:43,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:43,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:43,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 04:23:43,119 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 04:23:43,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:43,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1413008645, now seen corresponding path program 3 times [2024-06-28 04:23:43,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:43,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947179544] [2024-06-28 04:23:43,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:43,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:43,729 INFO 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 04:23:43,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:43,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947179544] [2024-06-28 04:23:43,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947179544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:43,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:43,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:43,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551692489] [2024-06-28 04:23:43,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:43,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:43,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:43,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:43,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:43,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:43,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 67 transitions, 605 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 04:23:43,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:43,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:43,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:43,991 INFO L124 PetriNetUnfolderBase]: 181/355 cut-off events. [2024-06-28 04:23:43,992 INFO L125 PetriNetUnfolderBase]: For 4007/4007 co-relation queries the response was YES. [2024-06-28 04:23:43,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 355 events. 181/355 cut-off events. For 4007/4007 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1378 event pairs, 50 based on Foata normal form. 2/356 useless extension candidates. Maximal degree in co-relation 1707. Up to 315 conditions per place. [2024-06-28 04:23:43,993 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 63 selfloop transitions, 14 changer transitions 0/79 dead transitions. [2024-06-28 04:23:43,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 79 transitions, 791 flow [2024-06-28 04:23:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:43,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:43,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 04:23:43,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-28 04:23:43,994 INFO L175 Difference]: Start difference. First operand has 107 places, 67 transitions, 605 flow. Second operand 10 states and 101 transitions. [2024-06-28 04:23:43,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 79 transitions, 791 flow [2024-06-28 04:23:43,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 79 transitions, 743 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 04:23:44,000 INFO L231 Difference]: Finished difference. Result has 99 places, 68 transitions, 599 flow [2024-06-28 04:23:44,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=599, PETRI_PLACES=99, PETRI_TRANSITIONS=68} [2024-06-28 04:23:44,000 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 71 predicate places. [2024-06-28 04:23:44,001 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 68 transitions, 599 flow [2024-06-28 04:23:44,001 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 04:23:44,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:44,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:44,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 04:23:44,001 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 04:23:44,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:44,002 INFO L85 PathProgramCache]: Analyzing trace with hash -207136523, now seen corresponding path program 4 times [2024-06-28 04:23:44,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:44,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804199671] [2024-06-28 04:23:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:44,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:44,594 INFO 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 04:23:44,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:44,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804199671] [2024-06-28 04:23:44,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804199671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:44,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:44,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:44,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942163949] [2024-06-28 04:23:44,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:44,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:44,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:44,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:44,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:44,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 68 transitions, 599 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 04:23:44,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:44,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:44,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:44,838 INFO L124 PetriNetUnfolderBase]: 185/363 cut-off events. [2024-06-28 04:23:44,839 INFO L125 PetriNetUnfolderBase]: For 2968/2968 co-relation queries the response was YES. [2024-06-28 04:23:44,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1724 conditions, 363 events. 185/363 cut-off events. For 2968/2968 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1434 event pairs, 40 based on Foata normal form. 2/364 useless extension candidates. Maximal degree in co-relation 1684. Up to 279 conditions per place. [2024-06-28 04:23:44,841 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 51 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2024-06-28 04:23:44,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 78 transitions, 785 flow [2024-06-28 04:23:44,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:44,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-28 04:23:44,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088669950738916 [2024-06-28 04:23:44,842 INFO L175 Difference]: Start difference. First operand has 99 places, 68 transitions, 599 flow. Second operand 7 states and 83 transitions. [2024-06-28 04:23:44,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 78 transitions, 785 flow [2024-06-28 04:23:44,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 78 transitions, 753 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 04:23:44,847 INFO L231 Difference]: Finished difference. Result has 98 places, 69 transitions, 635 flow [2024-06-28 04:23:44,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=635, PETRI_PLACES=98, PETRI_TRANSITIONS=69} [2024-06-28 04:23:44,848 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 70 predicate places. [2024-06-28 04:23:44,848 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 69 transitions, 635 flow [2024-06-28 04:23:44,848 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 04:23:44,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:44,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:44,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 04:23:44,848 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 04:23:44,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:44,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1403811875, now seen corresponding path program 5 times [2024-06-28 04:23:44,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:44,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725796286] [2024-06-28 04:23:44,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:44,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:45,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:45,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725796286] [2024-06-28 04:23:45,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725796286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:45,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:45,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:45,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733610949] [2024-06-28 04:23:45,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:45,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:45,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:45,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:45,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:45,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:45,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 69 transitions, 635 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 04:23:45,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:45,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:45,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:45,931 INFO L124 PetriNetUnfolderBase]: 182/358 cut-off events. [2024-06-28 04:23:45,931 INFO L125 PetriNetUnfolderBase]: For 3163/3163 co-relation queries the response was YES. [2024-06-28 04:23:45,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1722 conditions, 358 events. 182/358 cut-off events. For 3163/3163 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1427 event pairs, 45 based on Foata normal form. 2/359 useless extension candidates. Maximal degree in co-relation 1681. Up to 248 conditions per place. [2024-06-28 04:23:45,933 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 52 selfloop transitions, 24 changer transitions 0/78 dead transitions. [2024-06-28 04:23:45,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 78 transitions, 809 flow [2024-06-28 04:23:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:45,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-28 04:23:45,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088669950738916 [2024-06-28 04:23:45,934 INFO L175 Difference]: Start difference. First operand has 98 places, 69 transitions, 635 flow. Second operand 7 states and 83 transitions. [2024-06-28 04:23:45,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 78 transitions, 809 flow [2024-06-28 04:23:45,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 78 transitions, 755 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:45,939 INFO L231 Difference]: Finished difference. Result has 100 places, 69 transitions, 634 flow [2024-06-28 04:23:45,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=634, PETRI_PLACES=100, PETRI_TRANSITIONS=69} [2024-06-28 04:23:45,939 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 72 predicate places. [2024-06-28 04:23:45,939 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 69 transitions, 634 flow [2024-06-28 04:23:45,939 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 04:23:45,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:45,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:45,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 04:23:45,940 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 04:23:45,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:45,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1719111791, now seen corresponding path program 22 times [2024-06-28 04:23:45,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:45,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940536326] [2024-06-28 04:23:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:45,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:46,773 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 04:23:46,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:46,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940536326] [2024-06-28 04:23:46,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940536326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:46,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:46,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:46,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907744299] [2024-06-28 04:23:46,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:46,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:46,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:46,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:46,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:46,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:46,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 69 transitions, 634 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 04:23:46,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:46,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:46,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:47,187 INFO L124 PetriNetUnfolderBase]: 202/402 cut-off events. [2024-06-28 04:23:47,187 INFO L125 PetriNetUnfolderBase]: For 4612/4612 co-relation queries the response was YES. [2024-06-28 04:23:47,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 402 events. 202/402 cut-off events. For 4612/4612 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1692 event pairs, 49 based on Foata normal form. 10/411 useless extension candidates. Maximal degree in co-relation 1819. Up to 280 conditions per place. [2024-06-28 04:23:47,189 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 55 selfloop transitions, 23 changer transitions 9/89 dead transitions. [2024-06-28 04:23:47,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 89 transitions, 880 flow [2024-06-28 04:23:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 04:23:47,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:23:47,190 INFO L175 Difference]: Start difference. First operand has 100 places, 69 transitions, 634 flow. Second operand 10 states and 116 transitions. [2024-06-28 04:23:47,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 89 transitions, 880 flow [2024-06-28 04:23:47,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 89 transitions, 808 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:47,196 INFO L231 Difference]: Finished difference. Result has 104 places, 67 transitions, 598 flow [2024-06-28 04:23:47,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=598, PETRI_PLACES=104, PETRI_TRANSITIONS=67} [2024-06-28 04:23:47,196 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 76 predicate places. [2024-06-28 04:23:47,196 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 67 transitions, 598 flow [2024-06-28 04:23:47,196 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 04:23:47,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:47,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:47,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 04:23:47,197 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 04:23:47,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:47,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1628234571, now seen corresponding path program 23 times [2024-06-28 04:23:47,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:47,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183971107] [2024-06-28 04:23:47,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:47,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:48,158 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 04:23:48,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:48,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183971107] [2024-06-28 04:23:48,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183971107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:48,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:48,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:48,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41915571] [2024-06-28 04:23:48,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:48,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:48,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:48,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:48,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:48,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:48,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 67 transitions, 598 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 04:23:48,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:48,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:48,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:48,559 INFO L124 PetriNetUnfolderBase]: 202/410 cut-off events. [2024-06-28 04:23:48,559 INFO L125 PetriNetUnfolderBase]: For 5861/5861 co-relation queries the response was YES. [2024-06-28 04:23:48,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 410 events. 202/410 cut-off events. For 5861/5861 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1758 event pairs, 47 based on Foata normal form. 16/425 useless extension candidates. Maximal degree in co-relation 1783. Up to 281 conditions per place. [2024-06-28 04:23:48,560 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 52 selfloop transitions, 14 changer transitions 16/84 dead transitions. [2024-06-28 04:23:48,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 84 transitions, 822 flow [2024-06-28 04:23:48,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 04:23:48,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40229885057471265 [2024-06-28 04:23:48,562 INFO L175 Difference]: Start difference. First operand has 104 places, 67 transitions, 598 flow. Second operand 9 states and 105 transitions. [2024-06-28 04:23:48,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 84 transitions, 822 flow [2024-06-28 04:23:48,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 84 transitions, 770 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 04:23:48,567 INFO L231 Difference]: Finished difference. Result has 103 places, 61 transitions, 532 flow [2024-06-28 04:23:48,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=532, PETRI_PLACES=103, PETRI_TRANSITIONS=61} [2024-06-28 04:23:48,567 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 75 predicate places. [2024-06-28 04:23:48,567 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 61 transitions, 532 flow [2024-06-28 04:23:48,567 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 04:23:48,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:48,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:48,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 04:23:48,568 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 04:23:48,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:48,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1147096163, now seen corresponding path program 24 times [2024-06-28 04:23:48,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:48,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766900186] [2024-06-28 04:23:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:48,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:49,510 INFO 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 04:23:49,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766900186] [2024-06-28 04:23:49,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766900186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:49,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:49,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:49,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541019400] [2024-06-28 04:23:49,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:49,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:49,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:49,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:49,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:49,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:49,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 61 transitions, 532 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 04:23:49,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:49,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:49,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:49,797 INFO L124 PetriNetUnfolderBase]: 177/367 cut-off events. [2024-06-28 04:23:49,797 INFO L125 PetriNetUnfolderBase]: For 4946/4946 co-relation queries the response was YES. [2024-06-28 04:23:49,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 367 events. 177/367 cut-off events. For 4946/4946 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1540 event pairs, 42 based on Foata normal form. 16/382 useless extension candidates. Maximal degree in co-relation 1535. Up to 194 conditions per place. [2024-06-28 04:23:49,798 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 39 selfloop transitions, 17 changer transitions 18/76 dead transitions. [2024-06-28 04:23:49,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 76 transitions, 732 flow [2024-06-28 04:23:49,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:49,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 04:23:49,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41810344827586204 [2024-06-28 04:23:49,804 INFO L175 Difference]: Start difference. First operand has 103 places, 61 transitions, 532 flow. Second operand 8 states and 97 transitions. [2024-06-28 04:23:49,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 76 transitions, 732 flow [2024-06-28 04:23:49,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 76 transitions, 691 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 04:23:49,809 INFO L231 Difference]: Finished difference. Result has 96 places, 49 transitions, 435 flow [2024-06-28 04:23:49,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=435, PETRI_PLACES=96, PETRI_TRANSITIONS=49} [2024-06-28 04:23:49,810 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 68 predicate places. [2024-06-28 04:23:49,810 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 49 transitions, 435 flow [2024-06-28 04:23:49,810 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 04:23:49,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:49,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:49,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 04:23:49,810 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 04:23:49,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:49,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1628382441, now seen corresponding path program 25 times [2024-06-28 04:23:49,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:49,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28577224] [2024-06-28 04:23:49,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:49,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:50,509 INFO 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 04:23:50,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:50,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28577224] [2024-06-28 04:23:50,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28577224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:50,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:50,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:50,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126733237] [2024-06-28 04:23:50,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:50,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:50,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:50,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:50,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:50,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:50,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 49 transitions, 435 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 04:23:50,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:50,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:50,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:50,854 INFO L124 PetriNetUnfolderBase]: 105/235 cut-off events. [2024-06-28 04:23:50,854 INFO L125 PetriNetUnfolderBase]: For 2227/2227 co-relation queries the response was YES. [2024-06-28 04:23:50,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 235 events. 105/235 cut-off events. For 2227/2227 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 872 event pairs, 26 based on Foata normal form. 8/242 useless extension candidates. Maximal degree in co-relation 945. Up to 144 conditions per place. [2024-06-28 04:23:50,856 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 34 selfloop transitions, 13 changer transitions 13/62 dead transitions. [2024-06-28 04:23:50,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 62 transitions, 587 flow [2024-06-28 04:23:50,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:50,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 04:23:50,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 04:23:50,857 INFO L175 Difference]: Start difference. First operand has 96 places, 49 transitions, 435 flow. Second operand 9 states and 99 transitions. [2024-06-28 04:23:50,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 62 transitions, 587 flow [2024-06-28 04:23:50,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 62 transitions, 515 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-06-28 04:23:50,860 INFO L231 Difference]: Finished difference. Result has 87 places, 44 transitions, 352 flow [2024-06-28 04:23:50,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=352, PETRI_PLACES=87, PETRI_TRANSITIONS=44} [2024-06-28 04:23:50,861 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 59 predicate places. [2024-06-28 04:23:50,861 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 44 transitions, 352 flow [2024-06-28 04:23:50,861 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 04:23:50,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:50,861 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 04:23:50,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 04:23:50,861 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 04:23:50,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:50,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1947315230, now seen corresponding path program 1 times [2024-06-28 04:23:50,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:50,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194515112] [2024-06-28 04:23:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:50,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:51,930 INFO 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 04:23:51,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:51,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194515112] [2024-06-28 04:23:51,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194515112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:51,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:51,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:23:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378826592] [2024-06-28 04:23:51,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:51,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:23:51,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:51,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:23:51,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:23:52,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:52,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 44 transitions, 352 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 04:23:52,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:52,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:52,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:52,283 INFO L124 PetriNetUnfolderBase]: 93/211 cut-off events. [2024-06-28 04:23:52,284 INFO L125 PetriNetUnfolderBase]: For 1575/1575 co-relation queries the response was YES. [2024-06-28 04:23:52,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 211 events. 93/211 cut-off events. For 1575/1575 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 742 event pairs, 22 based on Foata normal form. 6/216 useless extension candidates. Maximal degree in co-relation 801. Up to 123 conditions per place. [2024-06-28 04:23:52,285 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 32 selfloop transitions, 7 changer transitions 21/62 dead transitions. [2024-06-28 04:23:52,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 62 transitions, 520 flow [2024-06-28 04:23:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:23:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:23:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 04:23:52,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3542319749216301 [2024-06-28 04:23:52,286 INFO L175 Difference]: Start difference. First operand has 87 places, 44 transitions, 352 flow. Second operand 11 states and 113 transitions. [2024-06-28 04:23:52,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 62 transitions, 520 flow [2024-06-28 04:23:52,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 62 transitions, 471 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 04:23:52,288 INFO L231 Difference]: Finished difference. Result has 79 places, 37 transitions, 254 flow [2024-06-28 04:23:52,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=254, PETRI_PLACES=79, PETRI_TRANSITIONS=37} [2024-06-28 04:23:52,289 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 51 predicate places. [2024-06-28 04:23:52,289 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 37 transitions, 254 flow [2024-06-28 04:23:52,289 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 04:23:52,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:52,289 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 04:23:52,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 04:23:52,289 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 04:23:52,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:52,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1972313416, now seen corresponding path program 2 times [2024-06-28 04:23:52,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:52,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991762629] [2024-06-28 04:23:52,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:52,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:53,353 INFO 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 04:23:53,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:53,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991762629] [2024-06-28 04:23:53,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991762629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:53,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:53,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:23:53,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211974194] [2024-06-28 04:23:53,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:53,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:23:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:53,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:23:53,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:23:53,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:53,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 37 transitions, 254 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 04:23:53,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:53,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:53,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:53,649 INFO L124 PetriNetUnfolderBase]: 79/177 cut-off events. [2024-06-28 04:23:53,650 INFO L125 PetriNetUnfolderBase]: For 850/850 co-relation queries the response was YES. [2024-06-28 04:23:53,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 177 events. 79/177 cut-off events. For 850/850 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 570 event pairs, 21 based on Foata normal form. 6/182 useless extension candidates. Maximal degree in co-relation 605. Up to 96 conditions per place. [2024-06-28 04:23:53,650 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 24 selfloop transitions, 7 changer transitions 18/51 dead transitions. [2024-06-28 04:23:53,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 51 transitions, 386 flow [2024-06-28 04:23:53,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:53,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 04:23:53,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35172413793103446 [2024-06-28 04:23:53,651 INFO L175 Difference]: Start difference. First operand has 79 places, 37 transitions, 254 flow. Second operand 10 states and 102 transitions. [2024-06-28 04:23:53,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 51 transitions, 386 flow [2024-06-28 04:23:53,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 51 transitions, 340 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 04:23:53,653 INFO L231 Difference]: Finished difference. Result has 65 places, 31 transitions, 183 flow [2024-06-28 04:23:53,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=183, PETRI_PLACES=65, PETRI_TRANSITIONS=31} [2024-06-28 04:23:53,654 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 37 predicate places. [2024-06-28 04:23:53,654 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 31 transitions, 183 flow [2024-06-28 04:23:53,654 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 04:23:53,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:53,654 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 04:23:53,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 04:23:53,654 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 04:23:53,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:53,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1110882372, now seen corresponding path program 3 times [2024-06-28 04:23:53,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:53,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203798916] [2024-06-28 04:23:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:53,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:54,529 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 04:23:54,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:54,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203798916] [2024-06-28 04:23:54,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203798916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:54,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:54,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:54,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673019831] [2024-06-28 04:23:54,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:54,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:54,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:54,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:54,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:54,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:54,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 31 transitions, 183 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 04:23:54,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:54,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:54,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:54,834 INFO L124 PetriNetUnfolderBase]: 64/145 cut-off events. [2024-06-28 04:23:54,834 INFO L125 PetriNetUnfolderBase]: For 712/712 co-relation queries the response was YES. [2024-06-28 04:23:54,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 145 events. 64/145 cut-off events. For 712/712 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 411 event pairs, 18 based on Foata normal form. 6/150 useless extension candidates. Maximal degree in co-relation 459. Up to 82 conditions per place. [2024-06-28 04:23:54,834 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 21 selfloop transitions, 5 changer transitions 14/42 dead transitions. [2024-06-28 04:23:54,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 42 transitions, 287 flow [2024-06-28 04:23:54,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:54,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 04:23:54,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-28 04:23:54,835 INFO L175 Difference]: Start difference. First operand has 65 places, 31 transitions, 183 flow. Second operand 8 states and 84 transitions. [2024-06-28 04:23:54,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 42 transitions, 287 flow [2024-06-28 04:23:54,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 42 transitions, 264 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 04:23:54,837 INFO L231 Difference]: Finished difference. Result has 55 places, 27 transitions, 154 flow [2024-06-28 04:23:54,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=154, PETRI_PLACES=55, PETRI_TRANSITIONS=27} [2024-06-28 04:23:54,837 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 27 predicate places. [2024-06-28 04:23:54,837 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 27 transitions, 154 flow [2024-06-28 04:23:54,837 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 04:23:54,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:54,838 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 04:23:54,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 04:23:54,838 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 04:23:54,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:54,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1237241900, now seen corresponding path program 4 times [2024-06-28 04:23:54,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:54,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266507002] [2024-06-28 04:23:54,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:54,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:55,844 INFO 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 04:23:55,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:55,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266507002] [2024-06-28 04:23:55,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266507002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:55,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:55,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:23:55,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074563311] [2024-06-28 04:23:55,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:55,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:23:55,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:55,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:23:55,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:23:55,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:55,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 27 transitions, 154 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 04:23:55,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:55,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:55,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:56,104 INFO L124 PetriNetUnfolderBase]: 54/127 cut-off events. [2024-06-28 04:23:56,104 INFO L125 PetriNetUnfolderBase]: For 575/575 co-relation queries the response was YES. [2024-06-28 04:23:56,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 127 events. 54/127 cut-off events. For 575/575 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 338 event pairs, 16 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 398. Up to 69 conditions per place. [2024-06-28 04:23:56,105 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 19 selfloop transitions, 3 changer transitions 16/40 dead transitions. [2024-06-28 04:23:56,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 40 transitions, 261 flow [2024-06-28 04:23:56,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:56,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-28 04:23:56,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 04:23:56,106 INFO L175 Difference]: Start difference. First operand has 55 places, 27 transitions, 154 flow. Second operand 9 states and 90 transitions. [2024-06-28 04:23:56,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 40 transitions, 261 flow [2024-06-28 04:23:56,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 40 transitions, 243 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:56,107 INFO L231 Difference]: Finished difference. Result has 51 places, 23 transitions, 115 flow [2024-06-28 04:23:56,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=115, PETRI_PLACES=51, PETRI_TRANSITIONS=23} [2024-06-28 04:23:56,107 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 23 predicate places. [2024-06-28 04:23:56,108 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 23 transitions, 115 flow [2024-06-28 04:23:56,108 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 04:23:56,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:56,108 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 04:23:56,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 04:23:56,109 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 04:23:56,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:56,109 INFO L85 PathProgramCache]: Analyzing trace with hash 568496172, now seen corresponding path program 5 times [2024-06-28 04:23:56,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:56,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142675799] [2024-06-28 04:23:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:56,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:56,822 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 04:23:56,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:56,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142675799] [2024-06-28 04:23:56,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142675799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:56,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:56,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:56,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593832698] [2024-06-28 04:23:56,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:56,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:56,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:56,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:56,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:56,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 04:23:56,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 23 transitions, 115 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 04:23:56,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:56,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 04:23:56,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:57,001 INFO L124 PetriNetUnfolderBase]: 26/67 cut-off events. [2024-06-28 04:23:57,001 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-06-28 04:23:57,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 67 events. 26/67 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 3 based on Foata normal form. 6/72 useless extension candidates. Maximal degree in co-relation 195. Up to 24 conditions per place. [2024-06-28 04:23:57,001 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-06-28 04:23:57,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 28 transitions, 165 flow [2024-06-28 04:23:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:57,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 73 transitions. [2024-06-28 04:23:57,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3146551724137931 [2024-06-28 04:23:57,017 INFO L175 Difference]: Start difference. First operand has 51 places, 23 transitions, 115 flow. Second operand 8 states and 73 transitions. [2024-06-28 04:23:57,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 28 transitions, 165 flow [2024-06-28 04:23:57,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 135 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 04:23:57,018 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-06-28 04:23:57,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-06-28 04:23:57,019 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 10 predicate places. [2024-06-28 04:23:57,019 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-06-28 04:23:57,019 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 04:23:57,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 04:23:57,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 04:23:57,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 04:23:57,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 04:23:57,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 04:23:57,023 INFO L445 BasicCegarLoop]: Path program histogram: [25, 15, 11, 8, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:57,026 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 04:23:57,026 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 04:23:57,029 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 04:23:57,029 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 04:23:57,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 04:23:57 BasicIcfg [2024-06-28 04:23:57,030 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 04:23:57,030 INFO L158 Benchmark]: Toolchain (without parser) took 92555.86ms. Allocated memory was 148.9MB in the beginning and 723.5MB in the end (delta: 574.6MB). Free memory was 113.1MB in the beginning and 461.7MB in the end (delta: -348.6MB). Peak memory consumption was 227.1MB. Max. memory is 16.1GB. [2024-06-28 04:23:57,030 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 148.9MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 04:23:57,030 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 148.9MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 04:23:57,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 593.71ms. Allocated memory is still 148.9MB. Free memory was 112.6MB in the beginning and 79.7MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-28 04:23:57,031 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.68ms. Allocated memory is still 148.9MB. Free memory was 79.7MB in the beginning and 77.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 04:23:57,031 INFO L158 Benchmark]: Boogie Preprocessor took 53.18ms. Allocated memory is still 148.9MB. Free memory was 77.4MB in the beginning and 73.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 04:23:57,031 INFO L158 Benchmark]: RCFGBuilder took 589.65ms. Allocated memory is still 148.9MB. Free memory was 73.9MB in the beginning and 96.7MB in the end (delta: -22.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-06-28 04:23:57,031 INFO L158 Benchmark]: TraceAbstraction took 91261.49ms. Allocated memory was 148.9MB in the beginning and 723.5MB in the end (delta: 574.6MB). Free memory was 96.0MB in the beginning and 461.7MB in the end (delta: -365.6MB). Peak memory consumption was 209.4MB. Max. memory is 16.1GB. [2024-06-28 04:23:57,032 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 0.10ms. Allocated memory is still 148.9MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 148.9MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 593.71ms. Allocated memory is still 148.9MB. Free memory was 112.6MB in the beginning and 79.7MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.68ms. Allocated memory is still 148.9MB. Free memory was 79.7MB in the beginning and 77.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.18ms. Allocated memory is still 148.9MB. Free memory was 77.4MB in the beginning and 73.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 589.65ms. Allocated memory is still 148.9MB. Free memory was 73.9MB in the beginning and 96.7MB in the end (delta: -22.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 91261.49ms. Allocated memory was 148.9MB in the beginning and 723.5MB in the end (delta: 574.6MB). Free memory was 96.0MB in the beginning and 461.7MB in the end (delta: -365.6MB). Peak memory consumption was 209.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 810]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 811]: 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, 46 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: 91.2s, OverallIterations: 86, TraceHistogramMax: 1, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 31.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5266 SdHoareTripleChecker+Valid, 18.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4499 mSDsluCounter, 2670 SdHoareTripleChecker+Invalid, 15.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2399 mSDsCounter, 1363 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31251 IncrementalHoareTripleChecker+Invalid, 32614 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1363 mSolverCounterUnsat, 271 mSDtfsCounter, 31251 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 880 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 874 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 22.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1884occurred in iteration=36, InterpolantAutomatonStates: 768, 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 58.4s InterpolantComputationTime, 1274 NumberOfCodeBlocks, 1274 NumberOfCodeBlocksAsserted, 86 NumberOfCheckSat, 1188 ConstructedInterpolants, 0 QuantifiedInterpolants, 51125 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 86 InterpolantComputations, 86 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 04:23:57,058 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