./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:58:23,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:58:23,609 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:58:23,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:58:23,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:58:23,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:58:23,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:58:23,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:58:23,650 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:58:23,653 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:58:23,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:58:23,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:58:23,654 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:58:23,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:58:23,655 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:58:23,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:58:23,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:58:23,655 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:58:23,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:58:23,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:58:23,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:58:23,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:58:23,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:58:23,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:58:23,657 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:58:23,657 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:58:23,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:58:23,657 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:58:23,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:58:23,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:58:23,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:58:23,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:58:23,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:58:23,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:58:23,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:58:23,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:58:23,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:58:23,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:58:23,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:58:23,659 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:58:23,659 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:58:23,660 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:58:23,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:58:23,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:58:23,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:58:23,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:58:23,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:58:23,923 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:58:23,924 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:58:23,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 19:58:24,847 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:58:25,091 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:58:25,092 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 19:58:25,106 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2979dedd/4991d0eb4c1a4d17b8cff70ef7747cfa/FLAGc359681c3 [2024-06-27 19:58:25,117 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2979dedd/4991d0eb4c1a4d17b8cff70ef7747cfa [2024-06-27 19:58:25,119 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:58:25,119 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:58:25,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml [2024-06-27 19:58:25,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:58:25,249 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:58:25,250 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:58:25,250 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:58:25,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:58:25,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:58:25" (1/2) ... [2024-06-27 19:58:25,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9703f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:25, skipping insertion in model container [2024-06-27 19:58:25,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:58:25" (1/2) ... [2024-06-27 19:58:25,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11127000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:25, skipping insertion in model container [2024-06-27 19:58:25,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:58:25" (2/2) ... [2024-06-27 19:58:25,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9703f06 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25, skipping insertion in model container [2024-06-27 19:58:25,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:58:25" (2/2) ... [2024-06-27 19:58:25,258 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:58:25,309 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:58:25,310 INFO L97 edCorrectnessWitness]: Location invariant before [L815-L815] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-27 19:58:25,311 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-27 19:58:25,311 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:58:25,311 INFO L106 edCorrectnessWitness]: ghost_update [L813-L813] multithreaded = 1; [2024-06-27 19:58:25,356 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:58:25,624 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:58:25,631 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:58:25,710 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:58:25,746 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:58:25,746 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25 WrapperNode [2024-06-27 19:58:25,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:58:25,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:58:25,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:58:25,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:58:25,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25" (1/1) ... [2024-06-27 19:58:25,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25" (1/1) ... [2024-06-27 19:58:25,783 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 114 [2024-06-27 19:58:25,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:58:25,784 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:58:25,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:58:25,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:58:25,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25" (1/1) ... [2024-06-27 19:58:25,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25" (1/1) ... [2024-06-27 19:58:25,795 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25" (1/1) ... [2024-06-27 19:58:25,808 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]. [2024-06-27 19:58:25,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25" (1/1) ... [2024-06-27 19:58:25,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25" (1/1) ... [2024-06-27 19:58:25,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25" (1/1) ... [2024-06-27 19:58:25,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25" (1/1) ... [2024-06-27 19:58:25,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25" (1/1) ... [2024-06-27 19:58:25,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25" (1/1) ... [2024-06-27 19:58:25,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:58:25,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:58:25,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:58:25,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:58:25,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25" (1/1) ... [2024-06-27 19:58:25,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:58:25,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:58:25,845 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) [2024-06-27 19:58:25,880 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 [2024-06-27 19:58:25,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:58:25,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:58:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:58:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:58:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:58:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:58:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:58:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:58:25,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:58:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:58:25,932 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 19:58:26,086 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:58:26,088 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:58:26,338 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:58:26,339 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:58:26,436 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:58:26,437 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:58:26,437 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:58:26 BoogieIcfgContainer [2024-06-27 19:58:26,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:58:26,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:58:26,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:58:26,441 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:58:26,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:58:25" (1/4) ... [2024-06-27 19:58:26,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4585cef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:58:26, skipping insertion in model container [2024-06-27 19:58:26,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:58:25" (2/4) ... [2024-06-27 19:58:26,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4585cef4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:58:26, skipping insertion in model container [2024-06-27 19:58:26,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:25" (3/4) ... [2024-06-27 19:58:26,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4585cef4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:58:26, skipping insertion in model container [2024-06-27 19:58:26,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:58:26" (4/4) ... [2024-06-27 19:58:26,444 INFO L112 eAbstractionObserver]: Analyzing ICFG mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 19:58:26,456 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:58:26,456 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 19:58:26,456 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:58:26,491 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:58:26,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 19:58:26,559 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-27 19:58:26,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:58:26,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 19:58:26,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 19:58:26,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-27 19:58:26,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:58:26,581 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;@5e4a6454, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:58:26,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 19:58:26,584 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:58:26,585 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:58:26,585 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:58:26,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:26,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:58:26,586 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)] === [2024-06-27 19:58:26,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:26,590 INFO L85 PathProgramCache]: Analyzing trace with hash 330355608, now seen corresponding path program 1 times [2024-06-27 19:58:26,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:26,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043883083] [2024-06-27 19:58:26,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:26,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:27,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:27,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043883083] [2024-06-27 19:58:27,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043883083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:27,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:27,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:58:27,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630782891] [2024-06-27 19:58:27,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:27,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:58:27,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:27,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:58:27,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:58:27,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-27 19:58:27,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:27,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:27,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-27 19:58:27,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:27,405 INFO L124 PetriNetUnfolderBase]: 131/256 cut-off events. [2024-06-27 19:58:27,405 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 19:58:27,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 256 events. 131/256 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 939 event pairs, 75 based on Foata normal form. 1/251 useless extension candidates. Maximal degree in co-relation 501. Up to 235 conditions per place. [2024-06-27 19:58:27,410 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 20 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-27 19:58:27,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 111 flow [2024-06-27 19:58:27,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:58:27,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:58:27,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-27 19:58:27,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-27 19:58:27,421 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 55 transitions. [2024-06-27 19:58:27,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 111 flow [2024-06-27 19:58:27,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:58:27,425 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-27 19:58:27,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-27 19:58:27,429 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-27 19:58:27,429 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-27 19:58:27,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:27,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:27,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:27,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:58:27,433 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)] === [2024-06-27 19:58:27,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:27,433 INFO L85 PathProgramCache]: Analyzing trace with hash -355808329, now seen corresponding path program 1 times [2024-06-27 19:58:27,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:27,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103512416] [2024-06-27 19:58:27,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:27,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:27,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:27,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103512416] [2024-06-27 19:58:27,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103512416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:27,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:27,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:58:27,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666711129] [2024-06-27 19:58:27,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:27,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:58:27,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:27,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:58:27,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:58:27,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-27 19:58:27,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:27,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:27,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-27 19:58:27,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:28,054 INFO L124 PetriNetUnfolderBase]: 128/256 cut-off events. [2024-06-27 19:58:28,055 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-06-27 19:58:28,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 256 events. 128/256 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 925 event pairs, 57 based on Foata normal form. 2/256 useless extension candidates. Maximal degree in co-relation 567. Up to 221 conditions per place. [2024-06-27 19:58:28,059 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 24 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-27 19:58:28,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 153 flow [2024-06-27 19:58:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:58:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:58:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-06-27 19:58:28,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-06-27 19:58:28,062 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 71 transitions. [2024-06-27 19:58:28,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 153 flow [2024-06-27 19:58:28,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:58:28,066 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-27 19:58:28,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-27 19:58:28,067 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-27 19:58:28,067 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-27 19:58:28,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:28,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:28,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:28,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:58:28,068 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)] === [2024-06-27 19:58:28,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:28,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1665613782, now seen corresponding path program 1 times [2024-06-27 19:58:28,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:28,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179266030] [2024-06-27 19:58:28,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:28,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:28,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:28,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179266030] [2024-06-27 19:58:28,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179266030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:28,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:28,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:58:28,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890641284] [2024-06-27 19:58:28,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:28,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:58:28,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:28,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:58:28,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:58:28,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 19:58:28,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:28,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:28,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 19:58:28,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:28,962 INFO L124 PetriNetUnfolderBase]: 153/295 cut-off events. [2024-06-27 19:58:28,962 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2024-06-27 19:58:28,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744 conditions, 295 events. 153/295 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1060 event pairs, 43 based on Foata normal form. 2/295 useless extension candidates. Maximal degree in co-relation 730. Up to 246 conditions per place. [2024-06-27 19:58:28,964 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 33 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2024-06-27 19:58:28,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 234 flow [2024-06-27 19:58:28,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:58:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:58:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-27 19:58:28,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-27 19:58:28,965 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 6 states and 98 transitions. [2024-06-27 19:58:28,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 234 flow [2024-06-27 19:58:28,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 222 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 19:58:28,967 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 132 flow [2024-06-27 19:58:28,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-27 19:58:28,968 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-27 19:58:28,968 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 132 flow [2024-06-27 19:58:28,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:28,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:28,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:28,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:58:28,969 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)] === [2024-06-27 19:58:28,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:28,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1811575236, now seen corresponding path program 1 times [2024-06-27 19:58:28,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:28,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372765966] [2024-06-27 19:58:28,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:28,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:29,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:29,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372765966] [2024-06-27 19:58:29,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372765966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:29,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:29,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:58:29,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759918353] [2024-06-27 19:58:29,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:29,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:58:29,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:29,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:58:29,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:58:29,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 19:58:29,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 132 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:29,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:29,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 19:58:29,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:29,835 INFO L124 PetriNetUnfolderBase]: 149/285 cut-off events. [2024-06-27 19:58:29,835 INFO L125 PetriNetUnfolderBase]: For 300/300 co-relation queries the response was YES. [2024-06-27 19:58:29,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 285 events. 149/285 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1000 event pairs, 24 based on Foata normal form. 4/287 useless extension candidates. Maximal degree in co-relation 791. Up to 220 conditions per place. [2024-06-27 19:58:29,837 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 33 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-06-27 19:58:29,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 254 flow [2024-06-27 19:58:29,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:58:29,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:58:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-27 19:58:29,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-27 19:58:29,839 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 132 flow. Second operand 7 states and 108 transitions. [2024-06-27 19:58:29,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 254 flow [2024-06-27 19:58:29,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 237 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 19:58:29,842 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 131 flow [2024-06-27 19:58:29,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2024-06-27 19:58:29,844 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2024-06-27 19:58:29,844 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 131 flow [2024-06-27 19:58:29,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:29,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:29,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:29,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:58:29,845 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:29,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:29,845 INFO L85 PathProgramCache]: Analyzing trace with hash -524096948, now seen corresponding path program 1 times [2024-06-27 19:58:29,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:29,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761261603] [2024-06-27 19:58:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:29,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:30,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:30,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761261603] [2024-06-27 19:58:30,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761261603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:30,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:30,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:58:30,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955537259] [2024-06-27 19:58:30,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:30,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:58:30,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:30,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:58:30,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:58:30,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:30,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:30,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:30,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:30,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:30,420 INFO L124 PetriNetUnfolderBase]: 174/315 cut-off events. [2024-06-27 19:58:30,420 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-06-27 19:58:30,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 315 events. 174/315 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1051 event pairs, 47 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 938. Up to 304 conditions per place. [2024-06-27 19:58:30,422 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 28 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-27 19:58:30,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 217 flow [2024-06-27 19:58:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:58:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:58:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-06-27 19:58:30,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-27 19:58:30,425 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 131 flow. Second operand 5 states and 59 transitions. [2024-06-27 19:58:30,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 217 flow [2024-06-27 19:58:30,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 193 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:58:30,430 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 134 flow [2024-06-27 19:58:30,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-27 19:58:30,435 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2024-06-27 19:58:30,435 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 134 flow [2024-06-27 19:58:30,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:30,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:30,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:30,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:58:30,437 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)] === [2024-06-27 19:58:30,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:30,437 INFO L85 PathProgramCache]: Analyzing trace with hash 932865172, now seen corresponding path program 1 times [2024-06-27 19:58:30,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:30,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479261528] [2024-06-27 19:58:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:30,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:30,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:30,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479261528] [2024-06-27 19:58:30,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479261528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:30,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:30,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:58:30,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54710959] [2024-06-27 19:58:30,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:30,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:58:30,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:30,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:58:30,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:58:30,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:30,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:30,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:30,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:30,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:31,096 INFO L124 PetriNetUnfolderBase]: 168/306 cut-off events. [2024-06-27 19:58:31,096 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2024-06-27 19:58:31,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 306 events. 168/306 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1005 event pairs, 44 based on Foata normal form. 3/307 useless extension candidates. Maximal degree in co-relation 940. Up to 286 conditions per place. [2024-06-27 19:58:31,098 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-06-27 19:58:31,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 238 flow [2024-06-27 19:58:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:58:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:58:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-27 19:58:31,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:58:31,099 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 134 flow. Second operand 6 states and 70 transitions. [2024-06-27 19:58:31,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 238 flow [2024-06-27 19:58:31,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 227 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 19:58:31,101 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 156 flow [2024-06-27 19:58:31,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-27 19:58:31,101 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-27 19:58:31,102 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 156 flow [2024-06-27 19:58:31,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:31,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:31,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:31,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:58:31,102 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)] === [2024-06-27 19:58:31,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:31,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1449334393, now seen corresponding path program 1 times [2024-06-27 19:58:31,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:31,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907504757] [2024-06-27 19:58:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:31,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:31,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:31,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907504757] [2024-06-27 19:58:31,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907504757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:31,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:31,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:58:31,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108813241] [2024-06-27 19:58:31,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:31,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:58:31,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:31,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:58:31,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:58:31,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:31,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:31,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:31,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:31,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:31,681 INFO L124 PetriNetUnfolderBase]: 171/311 cut-off events. [2024-06-27 19:58:31,681 INFO L125 PetriNetUnfolderBase]: For 754/754 co-relation queries the response was YES. [2024-06-27 19:58:31,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 311 events. 171/311 cut-off events. For 754/754 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1034 event pairs, 44 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 1023. Up to 284 conditions per place. [2024-06-27 19:58:31,683 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 34 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2024-06-27 19:58:31,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 298 flow [2024-06-27 19:58:31,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:58:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:58:31,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-27 19:58:31,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-27 19:58:31,684 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 156 flow. Second operand 6 states and 74 transitions. [2024-06-27 19:58:31,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 298 flow [2024-06-27 19:58:31,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 281 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:58:31,686 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 186 flow [2024-06-27 19:58:31,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-27 19:58:31,687 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-27 19:58:31,687 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 186 flow [2024-06-27 19:58:31,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:31,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:31,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:31,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:58:31,688 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)] === [2024-06-27 19:58:31,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash -372880819, now seen corresponding path program 2 times [2024-06-27 19:58:31,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:31,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918740080] [2024-06-27 19:58:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:31,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:32,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:32,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918740080] [2024-06-27 19:58:32,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918740080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:32,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:32,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:58:32,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130982675] [2024-06-27 19:58:32,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:32,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:58:32,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:32,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:58:32,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:58:32,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:32,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:32,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:32,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:32,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:32,203 INFO L124 PetriNetUnfolderBase]: 169/308 cut-off events. [2024-06-27 19:58:32,203 INFO L125 PetriNetUnfolderBase]: For 947/947 co-relation queries the response was YES. [2024-06-27 19:58:32,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 308 events. 169/308 cut-off events. For 947/947 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1030 event pairs, 43 based on Foata normal form. 1/307 useless extension candidates. Maximal degree in co-relation 1066. Up to 294 conditions per place. [2024-06-27 19:58:32,205 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-27 19:58:32,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 282 flow [2024-06-27 19:58:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:58:32,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:58:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-27 19:58:32,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-27 19:58:32,206 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 186 flow. Second operand 6 states and 68 transitions. [2024-06-27 19:58:32,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 282 flow [2024-06-27 19:58:32,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 268 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 19:58:32,208 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 193 flow [2024-06-27 19:58:32,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-06-27 19:58:32,209 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2024-06-27 19:58:32,209 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 193 flow [2024-06-27 19:58:32,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:32,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:32,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:32,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:58:32,210 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)] === [2024-06-27 19:58:32,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:32,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1979812003, now seen corresponding path program 1 times [2024-06-27 19:58:32,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:32,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798924343] [2024-06-27 19:58:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:32,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:32,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:32,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798924343] [2024-06-27 19:58:32,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798924343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:32,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:32,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:58:32,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414665690] [2024-06-27 19:58:32,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:32,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:58:32,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:32,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:58:32,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:58:32,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:32,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 193 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) [2024-06-27 19:58:32,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:32,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:32,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:32,922 INFO L124 PetriNetUnfolderBase]: 172/313 cut-off events. [2024-06-27 19:58:32,923 INFO L125 PetriNetUnfolderBase]: For 1171/1171 co-relation queries the response was YES. [2024-06-27 19:58:32,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 313 events. 172/313 cut-off events. For 1171/1171 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1041 event pairs, 42 based on Foata normal form. 1/312 useless extension candidates. Maximal degree in co-relation 1111. Up to 284 conditions per place. [2024-06-27 19:58:32,925 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 40 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2024-06-27 19:58:32,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 335 flow [2024-06-27 19:58:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:58:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:58:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-27 19:58:32,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-27 19:58:32,926 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 193 flow. Second operand 7 states and 83 transitions. [2024-06-27 19:58:32,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 335 flow [2024-06-27 19:58:32,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 311 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:32,929 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 208 flow [2024-06-27 19:58:32,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-27 19:58:32,929 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-06-27 19:58:32,929 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 208 flow [2024-06-27 19:58:32,929 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) [2024-06-27 19:58:32,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:32,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:32,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:58:32,930 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)] === [2024-06-27 19:58:32,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:32,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1342067115, now seen corresponding path program 1 times [2024-06-27 19:58:32,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:32,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87945638] [2024-06-27 19:58:32,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:32,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:33,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:33,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87945638] [2024-06-27 19:58:33,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87945638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:33,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:33,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:58:33,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020335113] [2024-06-27 19:58:33,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:33,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:58:33,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:33,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:58:33,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:58:33,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:33,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 208 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) [2024-06-27 19:58:33,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:33,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:33,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:33,550 INFO L124 PetriNetUnfolderBase]: 191/344 cut-off events. [2024-06-27 19:58:33,550 INFO L125 PetriNetUnfolderBase]: For 1615/1615 co-relation queries the response was YES. [2024-06-27 19:58:33,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 344 events. 191/344 cut-off events. For 1615/1615 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1179 event pairs, 46 based on Foata normal form. 3/345 useless extension candidates. Maximal degree in co-relation 1269. Up to 290 conditions per place. [2024-06-27 19:58:33,552 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 43 selfloop transitions, 15 changer transitions 0/60 dead transitions. [2024-06-27 19:58:33,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 398 flow [2024-06-27 19:58:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:58:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:58:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 19:58:33,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-27 19:58:33,553 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 208 flow. Second operand 7 states and 89 transitions. [2024-06-27 19:58:33,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 398 flow [2024-06-27 19:58:33,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 60 transitions, 375 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:58:33,556 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 255 flow [2024-06-27 19:58:33,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-27 19:58:33,556 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-06-27 19:58:33,556 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 255 flow [2024-06-27 19:58:33,557 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) [2024-06-27 19:58:33,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:33,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:33,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:58:33,557 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)] === [2024-06-27 19:58:33,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:33,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1979692033, now seen corresponding path program 2 times [2024-06-27 19:58:33,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:33,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39540596] [2024-06-27 19:58:33,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:33,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:34,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:34,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39540596] [2024-06-27 19:58:34,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39540596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:34,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:34,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:58:34,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648113826] [2024-06-27 19:58:34,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:34,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:58:34,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:34,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:58:34,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:58:34,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:34,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 255 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) [2024-06-27 19:58:34,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:34,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:34,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:34,179 INFO L124 PetriNetUnfolderBase]: 194/349 cut-off events. [2024-06-27 19:58:34,180 INFO L125 PetriNetUnfolderBase]: For 1906/1906 co-relation queries the response was YES. [2024-06-27 19:58:34,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 349 events. 194/349 cut-off events. For 1906/1906 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1200 event pairs, 45 based on Foata normal form. 1/348 useless extension candidates. Maximal degree in co-relation 1404. Up to 304 conditions per place. [2024-06-27 19:58:34,182 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 41 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2024-06-27 19:58:34,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 445 flow [2024-06-27 19:58:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:58:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:58:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 19:58:34,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-27 19:58:34,183 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 255 flow. Second operand 7 states and 85 transitions. [2024-06-27 19:58:34,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 445 flow [2024-06-27 19:58:34,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 436 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 19:58:34,186 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 317 flow [2024-06-27 19:58:34,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-06-27 19:58:34,187 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-27 19:58:34,187 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 317 flow [2024-06-27 19:58:34,187 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) [2024-06-27 19:58:34,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:34,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:34,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:58:34,188 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)] === [2024-06-27 19:58:34,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:34,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1325835025, now seen corresponding path program 2 times [2024-06-27 19:58:34,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:34,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578164458] [2024-06-27 19:58:34,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:34,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:34,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:34,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578164458] [2024-06-27 19:58:34,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578164458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:34,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:34,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:58:34,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103619742] [2024-06-27 19:58:34,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:34,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:58:34,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:34,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:58:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:58:34,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:34,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 317 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) [2024-06-27 19:58:34,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:34,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:34,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:34,884 INFO L124 PetriNetUnfolderBase]: 203/364 cut-off events. [2024-06-27 19:58:34,884 INFO L125 PetriNetUnfolderBase]: For 2509/2509 co-relation queries the response was YES. [2024-06-27 19:58:34,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 364 events. 203/364 cut-off events. For 2509/2509 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1261 event pairs, 44 based on Foata normal form. 3/365 useless extension candidates. Maximal degree in co-relation 1541. Up to 341 conditions per place. [2024-06-27 19:58:34,886 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 48 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-27 19:58:34,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 467 flow [2024-06-27 19:58:34,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:58:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:58:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-27 19:58:34,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-27 19:58:34,887 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 317 flow. Second operand 7 states and 79 transitions. [2024-06-27 19:58:34,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 467 flow [2024-06-27 19:58:34,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 445 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 19:58:34,891 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 336 flow [2024-06-27 19:58:34,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=336, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-06-27 19:58:34,891 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2024-06-27 19:58:34,891 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 336 flow [2024-06-27 19:58:34,892 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) [2024-06-27 19:58:34,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:34,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:34,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:58:34,892 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)] === [2024-06-27 19:58:34,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1164935781, now seen corresponding path program 3 times [2024-06-27 19:58:34,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:34,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383938123] [2024-06-27 19:58:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:34,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:35,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:35,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383938123] [2024-06-27 19:58:35,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383938123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:35,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:35,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:58:35,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913420219] [2024-06-27 19:58:35,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:35,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:58:35,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:35,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:58:35,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:58:35,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:35,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 336 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) [2024-06-27 19:58:35,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:35,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:35,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:35,507 INFO L124 PetriNetUnfolderBase]: 201/361 cut-off events. [2024-06-27 19:58:35,507 INFO L125 PetriNetUnfolderBase]: For 2724/2724 co-relation queries the response was YES. [2024-06-27 19:58:35,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 361 events. 201/361 cut-off events. For 2724/2724 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1245 event pairs, 44 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 1578. Up to 344 conditions per place. [2024-06-27 19:58:35,510 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 46 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2024-06-27 19:58:35,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 58 transitions, 464 flow [2024-06-27 19:58:35,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:58:35,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:58:35,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-27 19:58:35,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 19:58:35,511 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 336 flow. Second operand 7 states and 77 transitions. [2024-06-27 19:58:35,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 58 transitions, 464 flow [2024-06-27 19:58:35,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 58 transitions, 435 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 19:58:35,515 INFO L231 Difference]: Finished difference. Result has 65 places, 51 transitions, 332 flow [2024-06-27 19:58:35,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=65, PETRI_TRANSITIONS=51} [2024-06-27 19:58:35,515 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-27 19:58:35,515 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 332 flow [2024-06-27 19:58:35,515 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) [2024-06-27 19:58:35,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:35,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:35,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:58:35,516 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)] === [2024-06-27 19:58:35,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:35,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1164935595, now seen corresponding path program 3 times [2024-06-27 19:58:35,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:35,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922261970] [2024-06-27 19:58:35,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:35,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:35,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:35,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922261970] [2024-06-27 19:58:35,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922261970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:35,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:35,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:58:35,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007018959] [2024-06-27 19:58:35,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:35,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:58:35,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:35,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:58:35,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:58:35,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:35,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 332 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) [2024-06-27 19:58:35,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:35,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:35,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:36,149 INFO L124 PetriNetUnfolderBase]: 195/352 cut-off events. [2024-06-27 19:58:36,149 INFO L125 PetriNetUnfolderBase]: For 2980/2980 co-relation queries the response was YES. [2024-06-27 19:58:36,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 352 events. 195/352 cut-off events. For 2980/2980 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1216 event pairs, 42 based on Foata normal form. 3/353 useless extension candidates. Maximal degree in co-relation 1530. Up to 317 conditions per place. [2024-06-27 19:58:36,163 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 47 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-06-27 19:58:36,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 62 transitions, 480 flow [2024-06-27 19:58:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:58:36,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:58:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-27 19:58:36,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-27 19:58:36,165 INFO L175 Difference]: Start difference. First operand has 65 places, 51 transitions, 332 flow. Second operand 7 states and 83 transitions. [2024-06-27 19:58:36,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 62 transitions, 480 flow [2024-06-27 19:58:36,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 449 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:36,168 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 332 flow [2024-06-27 19:58:36,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2024-06-27 19:58:36,169 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2024-06-27 19:58:36,169 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 332 flow [2024-06-27 19:58:36,169 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) [2024-06-27 19:58:36,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:36,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:36,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:58:36,169 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)] === [2024-06-27 19:58:36,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:36,170 INFO L85 PathProgramCache]: Analyzing trace with hash 522219842, now seen corresponding path program 1 times [2024-06-27 19:58:36,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:36,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53776854] [2024-06-27 19:58:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:36,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:36,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:36,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53776854] [2024-06-27 19:58:36,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53776854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:36,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:36,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:36,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745973395] [2024-06-27 19:58:36,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:36,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:36,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:36,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:36,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:36,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:36,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 332 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) [2024-06-27 19:58:36,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:36,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:36,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:37,175 INFO L124 PetriNetUnfolderBase]: 198/357 cut-off events. [2024-06-27 19:58:37,175 INFO L125 PetriNetUnfolderBase]: For 3236/3236 co-relation queries the response was YES. [2024-06-27 19:58:37,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1622 conditions, 357 events. 198/357 cut-off events. For 3236/3236 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1246 event pairs, 41 based on Foata normal form. 1/356 useless extension candidates. Maximal degree in co-relation 1590. Up to 314 conditions per place. [2024-06-27 19:58:37,177 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 55 selfloop transitions, 14 changer transitions 0/71 dead transitions. [2024-06-27 19:58:37,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 71 transitions, 528 flow [2024-06-27 19:58:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:58:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:58:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 19:58:37,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-06-27 19:58:37,179 INFO L175 Difference]: Start difference. First operand has 66 places, 51 transitions, 332 flow. Second operand 9 states and 104 transitions. [2024-06-27 19:58:37,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 71 transitions, 528 flow [2024-06-27 19:58:37,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 489 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:37,182 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 345 flow [2024-06-27 19:58:37,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=345, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2024-06-27 19:58:37,183 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-27 19:58:37,183 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 345 flow [2024-06-27 19:58:37,183 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) [2024-06-27 19:58:37,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:37,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:37,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:58:37,184 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)] === [2024-06-27 19:58:37,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:37,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1341868935, now seen corresponding path program 1 times [2024-06-27 19:58:37,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:37,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905618920] [2024-06-27 19:58:37,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:37,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:37,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:37,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:37,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905618920] [2024-06-27 19:58:37,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905618920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:37,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:37,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:37,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758027710] [2024-06-27 19:58:37,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:37,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:37,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:37,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:37,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:37,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:37,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 345 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) [2024-06-27 19:58:37,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:37,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:37,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:37,960 INFO L124 PetriNetUnfolderBase]: 207/372 cut-off events. [2024-06-27 19:58:37,960 INFO L125 PetriNetUnfolderBase]: For 3864/3864 co-relation queries the response was YES. [2024-06-27 19:58:37,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 372 events. 207/372 cut-off events. For 3864/3864 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1314 event pairs, 44 based on Foata normal form. 3/373 useless extension candidates. Maximal degree in co-relation 1686. Up to 334 conditions per place. [2024-06-27 19:58:37,962 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 57 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-06-27 19:58:37,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 537 flow [2024-06-27 19:58:37,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 19:58:37,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-27 19:58:37,964 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 345 flow. Second operand 8 states and 94 transitions. [2024-06-27 19:58:37,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 537 flow [2024-06-27 19:58:37,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 503 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:37,968 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 358 flow [2024-06-27 19:58:37,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=358, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-27 19:58:37,969 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-27 19:58:37,969 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 358 flow [2024-06-27 19:58:37,969 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) [2024-06-27 19:58:37,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:37,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:37,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:58:37,970 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)] === [2024-06-27 19:58:37,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:37,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1240903923, now seen corresponding path program 2 times [2024-06-27 19:58:37,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:37,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401046348] [2024-06-27 19:58:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:37,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:38,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:38,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401046348] [2024-06-27 19:58:38,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401046348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:38,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:38,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:38,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929124678] [2024-06-27 19:58:38,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:38,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:38,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:38,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:38,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:38,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:38,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 358 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) [2024-06-27 19:58:38,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:38,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:38,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:38,668 INFO L124 PetriNetUnfolderBase]: 241/427 cut-off events. [2024-06-27 19:58:38,669 INFO L125 PetriNetUnfolderBase]: For 5156/5156 co-relation queries the response was YES. [2024-06-27 19:58:38,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2081 conditions, 427 events. 241/427 cut-off events. For 5156/5156 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1572 event pairs, 49 based on Foata normal form. 3/428 useless extension candidates. Maximal degree in co-relation 2047. Up to 291 conditions per place. [2024-06-27 19:58:38,671 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 51 selfloop transitions, 27 changer transitions 0/80 dead transitions. [2024-06-27 19:58:38,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 680 flow [2024-06-27 19:58:38,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:38,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-27 19:58:38,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 19:58:38,673 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 358 flow. Second operand 8 states and 104 transitions. [2024-06-27 19:58:38,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 680 flow [2024-06-27 19:58:38,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 649 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:38,678 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 444 flow [2024-06-27 19:58:38,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=444, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-06-27 19:58:38,679 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-06-27 19:58:38,679 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 444 flow [2024-06-27 19:58:38,679 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) [2024-06-27 19:58:38,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:38,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:38,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:58:38,680 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)] === [2024-06-27 19:58:38,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:38,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1345588005, now seen corresponding path program 3 times [2024-06-27 19:58:38,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:38,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636231692] [2024-06-27 19:58:38,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:38,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:39,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:39,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636231692] [2024-06-27 19:58:39,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636231692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:39,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:39,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:39,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716839679] [2024-06-27 19:58:39,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:39,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:39,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:39,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:39,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:39,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:39,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 444 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) [2024-06-27 19:58:39,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:39,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:39,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:39,402 INFO L124 PetriNetUnfolderBase]: 235/418 cut-off events. [2024-06-27 19:58:39,403 INFO L125 PetriNetUnfolderBase]: For 5511/5511 co-relation queries the response was YES. [2024-06-27 19:58:39,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 418 events. 235/418 cut-off events. For 5511/5511 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1530 event pairs, 47 based on Foata normal form. 3/419 useless extension candidates. Maximal degree in co-relation 2058. Up to 287 conditions per place. [2024-06-27 19:58:39,406 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 53 selfloop transitions, 26 changer transitions 0/81 dead transitions. [2024-06-27 19:58:39,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 81 transitions, 688 flow [2024-06-27 19:58:39,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 19:58:39,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-27 19:58:39,407 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 444 flow. Second operand 8 states and 106 transitions. [2024-06-27 19:58:39,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 81 transitions, 688 flow [2024-06-27 19:58:39,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 81 transitions, 652 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 19:58:39,414 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 465 flow [2024-06-27 19:58:39,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=465, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-06-27 19:58:39,415 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-27 19:58:39,415 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 465 flow [2024-06-27 19:58:39,417 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) [2024-06-27 19:58:39,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:39,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:39,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:58:39,417 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)] === [2024-06-27 19:58:39,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:39,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1240909658, now seen corresponding path program 2 times [2024-06-27 19:58:39,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:39,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016855124] [2024-06-27 19:58:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:39,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:40,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:40,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016855124] [2024-06-27 19:58:40,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016855124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:40,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:40,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:40,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277789192] [2024-06-27 19:58:40,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:40,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:40,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:40,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:40,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:40,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:40,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 465 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) [2024-06-27 19:58:40,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:40,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:40,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:40,389 INFO L124 PetriNetUnfolderBase]: 238/423 cut-off events. [2024-06-27 19:58:40,390 INFO L125 PetriNetUnfolderBase]: For 5828/5828 co-relation queries the response was YES. [2024-06-27 19:58:40,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2182 conditions, 423 events. 238/423 cut-off events. For 5828/5828 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1551 event pairs, 50 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 2145. Up to 376 conditions per place. [2024-06-27 19:58:40,392 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 53 selfloop transitions, 19 changer transitions 0/74 dead transitions. [2024-06-27 19:58:40,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 74 transitions, 653 flow [2024-06-27 19:58:40,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:40,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:40,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 19:58:40,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 19:58:40,394 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 465 flow. Second operand 8 states and 93 transitions. [2024-06-27 19:58:40,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 74 transitions, 653 flow [2024-06-27 19:58:40,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 74 transitions, 589 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:40,400 INFO L231 Difference]: Finished difference. Result has 78 places, 63 transitions, 466 flow [2024-06-27 19:58:40,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=466, PETRI_PLACES=78, PETRI_TRANSITIONS=63} [2024-06-27 19:58:40,400 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2024-06-27 19:58:40,400 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 63 transitions, 466 flow [2024-06-27 19:58:40,400 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) [2024-06-27 19:58:40,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:40,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:58:40,401 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)] === [2024-06-27 19:58:40,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1393514342, now seen corresponding path program 3 times [2024-06-27 19:58:40,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:40,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416971482] [2024-06-27 19:58:40,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:41,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:41,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416971482] [2024-06-27 19:58:41,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416971482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:41,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:41,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:41,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224343485] [2024-06-27 19:58:41,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:41,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:41,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:41,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:41,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:41,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:41,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 63 transitions, 466 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) [2024-06-27 19:58:41,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:41,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:41,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:41,299 INFO L124 PetriNetUnfolderBase]: 236/420 cut-off events. [2024-06-27 19:58:41,300 INFO L125 PetriNetUnfolderBase]: For 6041/6041 co-relation queries the response was YES. [2024-06-27 19:58:41,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2159 conditions, 420 events. 236/420 cut-off events. For 6041/6041 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1539 event pairs, 53 based on Foata normal form. 1/419 useless extension candidates. Maximal degree in co-relation 2121. Up to 400 conditions per place. [2024-06-27 19:58:41,302 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 59 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-27 19:58:41,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 648 flow [2024-06-27 19:58:41,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:41,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 19:58:41,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 19:58:41,304 INFO L175 Difference]: Start difference. First operand has 78 places, 63 transitions, 466 flow. Second operand 8 states and 86 transitions. [2024-06-27 19:58:41,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 73 transitions, 648 flow [2024-06-27 19:58:41,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 599 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:41,310 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 472 flow [2024-06-27 19:58:41,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=472, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-06-27 19:58:41,310 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2024-06-27 19:58:41,311 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 472 flow [2024-06-27 19:58:41,311 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) [2024-06-27 19:58:41,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:41,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:41,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:58:41,311 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)] === [2024-06-27 19:58:41,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:41,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1745912237, now seen corresponding path program 4 times [2024-06-27 19:58:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:41,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222493251] [2024-06-27 19:58:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:41,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:41,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:41,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222493251] [2024-06-27 19:58:41,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222493251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:41,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:41,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:41,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907568289] [2024-06-27 19:58:41,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:41,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:41,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:41,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:41,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:41,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:41,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 472 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) [2024-06-27 19:58:41,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:41,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:41,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:42,043 INFO L124 PetriNetUnfolderBase]: 245/435 cut-off events. [2024-06-27 19:58:42,044 INFO L125 PetriNetUnfolderBase]: For 7087/7087 co-relation queries the response was YES. [2024-06-27 19:58:42,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 435 events. 245/435 cut-off events. For 7087/7087 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1617 event pairs, 53 based on Foata normal form. 3/436 useless extension candidates. Maximal degree in co-relation 2217. Up to 399 conditions per place. [2024-06-27 19:58:42,046 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 65 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2024-06-27 19:58:42,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 79 transitions, 678 flow [2024-06-27 19:58:42,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:42,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 19:58:42,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:58:42,048 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 472 flow. Second operand 8 states and 90 transitions. [2024-06-27 19:58:42,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 79 transitions, 678 flow [2024-06-27 19:58:42,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 639 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:42,054 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 488 flow [2024-06-27 19:58:42,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=488, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-06-27 19:58:42,054 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-27 19:58:42,055 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 488 flow [2024-06-27 19:58:42,055 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) [2024-06-27 19:58:42,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:42,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:42,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:58:42,055 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)] === [2024-06-27 19:58:42,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:42,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1753263887, now seen corresponding path program 5 times [2024-06-27 19:58:42,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:42,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813098116] [2024-06-27 19:58:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:42,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:42,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813098116] [2024-06-27 19:58:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813098116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:42,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:42,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:42,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635016629] [2024-06-27 19:58:42,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:42,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:42,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:42,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:42,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:42,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:42,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 488 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) [2024-06-27 19:58:42,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:42,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:42,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:42,773 INFO L124 PetriNetUnfolderBase]: 254/450 cut-off events. [2024-06-27 19:58:42,773 INFO L125 PetriNetUnfolderBase]: For 8004/8004 co-relation queries the response was YES. [2024-06-27 19:58:42,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2377 conditions, 450 events. 254/450 cut-off events. For 8004/8004 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1696 event pairs, 53 based on Foata normal form. 3/451 useless extension candidates. Maximal degree in co-relation 2337. Up to 372 conditions per place. [2024-06-27 19:58:42,776 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 63 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-27 19:58:42,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 758 flow [2024-06-27 19:58:42,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 19:58:42,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-27 19:58:42,777 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 488 flow. Second operand 8 states and 97 transitions. [2024-06-27 19:58:42,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 758 flow [2024-06-27 19:58:42,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 84 transitions, 723 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:42,784 INFO L231 Difference]: Finished difference. Result has 84 places, 69 transitions, 522 flow [2024-06-27 19:58:42,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=522, PETRI_PLACES=84, PETRI_TRANSITIONS=69} [2024-06-27 19:58:42,784 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-06-27 19:58:42,784 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 69 transitions, 522 flow [2024-06-27 19:58:42,784 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) [2024-06-27 19:58:42,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:42,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:42,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:58:42,785 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)] === [2024-06-27 19:58:42,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1745645110, now seen corresponding path program 1 times [2024-06-27 19:58:42,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:42,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204413352] [2024-06-27 19:58:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:42,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:43,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:43,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204413352] [2024-06-27 19:58:43,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204413352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:43,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:43,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:43,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67976052] [2024-06-27 19:58:43,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:43,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:43,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:43,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:43,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:43,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:43,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 522 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) [2024-06-27 19:58:43,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:43,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:43,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:43,668 INFO L124 PetriNetUnfolderBase]: 250/444 cut-off events. [2024-06-27 19:58:43,668 INFO L125 PetriNetUnfolderBase]: For 8008/8008 co-relation queries the response was YES. [2024-06-27 19:58:43,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 444 events. 250/444 cut-off events. For 8008/8008 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1655 event pairs, 49 based on Foata normal form. 2/444 useless extension candidates. Maximal degree in co-relation 2313. Up to 416 conditions per place. [2024-06-27 19:58:43,671 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 67 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2024-06-27 19:58:43,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 81 transitions, 718 flow [2024-06-27 19:58:43,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:43,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 19:58:43,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 19:58:43,672 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 522 flow. Second operand 8 states and 88 transitions. [2024-06-27 19:58:43,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 81 transitions, 718 flow [2024-06-27 19:58:43,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 81 transitions, 654 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:43,679 INFO L231 Difference]: Finished difference. Result has 86 places, 71 transitions, 507 flow [2024-06-27 19:58:43,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=507, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2024-06-27 19:58:43,680 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-06-27 19:58:43,680 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 507 flow [2024-06-27 19:58:43,680 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) [2024-06-27 19:58:43,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:43,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:43,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:58:43,680 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)] === [2024-06-27 19:58:43,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1753269467, now seen corresponding path program 6 times [2024-06-27 19:58:43,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:43,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444955088] [2024-06-27 19:58:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:43,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:44,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:44,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444955088] [2024-06-27 19:58:44,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444955088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:44,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:44,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:44,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302641681] [2024-06-27 19:58:44,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:44,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:44,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:44,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:44,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:44,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:44,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 507 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) [2024-06-27 19:58:44,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:44,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:44,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:44,395 INFO L124 PetriNetUnfolderBase]: 244/435 cut-off events. [2024-06-27 19:58:44,395 INFO L125 PetriNetUnfolderBase]: For 7834/7834 co-relation queries the response was YES. [2024-06-27 19:58:44,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 435 events. 244/435 cut-off events. For 7834/7834 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1638 event pairs, 44 based on Foata normal form. 3/436 useless extension candidates. Maximal degree in co-relation 2181. Up to 362 conditions per place. [2024-06-27 19:58:44,398 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 63 selfloop transitions, 20 changer transitions 0/85 dead transitions. [2024-06-27 19:58:44,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 85 transitions, 709 flow [2024-06-27 19:58:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:44,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 19:58:44,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 19:58:44,399 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 507 flow. Second operand 8 states and 95 transitions. [2024-06-27 19:58:44,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 85 transitions, 709 flow [2024-06-27 19:58:44,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 85 transitions, 659 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:44,406 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 502 flow [2024-06-27 19:58:44,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2024-06-27 19:58:44,406 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-06-27 19:58:44,406 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 502 flow [2024-06-27 19:58:44,406 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) [2024-06-27 19:58:44,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:44,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:44,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:58:44,407 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)] === [2024-06-27 19:58:44,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:44,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1745635190, now seen corresponding path program 1 times [2024-06-27 19:58:44,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:44,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016456818] [2024-06-27 19:58:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:44,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:45,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:45,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016456818] [2024-06-27 19:58:45,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016456818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:45,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:45,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:45,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5438532] [2024-06-27 19:58:45,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:45,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:45,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:45,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:45,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:45,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:45,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 502 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) [2024-06-27 19:58:45,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:45,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:45,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:45,573 INFO L124 PetriNetUnfolderBase]: 241/430 cut-off events. [2024-06-27 19:58:45,573 INFO L125 PetriNetUnfolderBase]: For 7549/7549 co-relation queries the response was YES. [2024-06-27 19:58:45,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 430 events. 241/430 cut-off events. For 7549/7549 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1585 event pairs, 46 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 2136. Up to 404 conditions per place. [2024-06-27 19:58:45,575 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 68 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2024-06-27 19:58:45,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 81 transitions, 682 flow [2024-06-27 19:58:45,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 19:58:45,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 19:58:45,581 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 502 flow. Second operand 8 states and 86 transitions. [2024-06-27 19:58:45,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 81 transitions, 682 flow [2024-06-27 19:58:45,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 81 transitions, 637 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:45,588 INFO L231 Difference]: Finished difference. Result has 89 places, 71 transitions, 483 flow [2024-06-27 19:58:45,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=483, PETRI_PLACES=89, PETRI_TRANSITIONS=71} [2024-06-27 19:58:45,589 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-27 19:58:45,589 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 71 transitions, 483 flow [2024-06-27 19:58:45,589 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) [2024-06-27 19:58:45,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:45,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:45,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:58:45,589 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)] === [2024-06-27 19:58:45,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:45,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1354596488, now seen corresponding path program 1 times [2024-06-27 19:58:45,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:45,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682647647] [2024-06-27 19:58:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:45,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:46,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:46,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682647647] [2024-06-27 19:58:46,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682647647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:46,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:46,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:46,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407377263] [2024-06-27 19:58:46,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:46,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:46,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:46,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:46,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 71 transitions, 483 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) [2024-06-27 19:58:46,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:46,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:46,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:46,618 INFO L124 PetriNetUnfolderBase]: 252/451 cut-off events. [2024-06-27 19:58:46,618 INFO L125 PetriNetUnfolderBase]: For 8893/8893 co-relation queries the response was YES. [2024-06-27 19:58:46,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 451 events. 252/451 cut-off events. For 8893/8893 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1722 event pairs, 33 based on Foata normal form. 2/451 useless extension candidates. Maximal degree in co-relation 2287. Up to 373 conditions per place. [2024-06-27 19:58:46,622 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 77 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-27 19:58:46,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 95 transitions, 803 flow [2024-06-27 19:58:46,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:58:46,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:58:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:58:46,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 19:58:46,624 INFO L175 Difference]: Start difference. First operand has 89 places, 71 transitions, 483 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:58:46,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 95 transitions, 803 flow [2024-06-27 19:58:46,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 777 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:46,634 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 527 flow [2024-06-27 19:58:46,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=527, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2024-06-27 19:58:46,635 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-27 19:58:46,635 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 527 flow [2024-06-27 19:58:46,635 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) [2024-06-27 19:58:46,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:46,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:46,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:58:46,635 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)] === [2024-06-27 19:58:46,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:46,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1772623256, now seen corresponding path program 1 times [2024-06-27 19:58:46,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:46,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048455306] [2024-06-27 19:58:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:46,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:47,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:47,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048455306] [2024-06-27 19:58:47,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048455306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:47,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:47,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:47,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504750209] [2024-06-27 19:58:47,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:47,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:47,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:47,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:47,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 527 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) [2024-06-27 19:58:47,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:47,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:47,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:47,642 INFO L124 PetriNetUnfolderBase]: 261/466 cut-off events. [2024-06-27 19:58:47,642 INFO L125 PetriNetUnfolderBase]: For 9938/9938 co-relation queries the response was YES. [2024-06-27 19:58:47,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 466 events. 261/466 cut-off events. For 9938/9938 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1799 event pairs, 49 based on Foata normal form. 3/467 useless extension candidates. Maximal degree in co-relation 2401. Up to 401 conditions per place. [2024-06-27 19:58:47,645 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 78 selfloop transitions, 19 changer transitions 0/99 dead transitions. [2024-06-27 19:58:47,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 803 flow [2024-06-27 19:58:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:47,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 19:58:47,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 19:58:47,646 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 527 flow. Second operand 11 states and 126 transitions. [2024-06-27 19:58:47,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 99 transitions, 803 flow [2024-06-27 19:58:47,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 99 transitions, 766 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:47,655 INFO L231 Difference]: Finished difference. Result has 98 places, 76 transitions, 567 flow [2024-06-27 19:58:47,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=567, PETRI_PLACES=98, PETRI_TRANSITIONS=76} [2024-06-27 19:58:47,656 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-27 19:58:47,656 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 76 transitions, 567 flow [2024-06-27 19:58:47,656 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) [2024-06-27 19:58:47,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:47,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:47,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:58:47,656 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)] === [2024-06-27 19:58:47,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:47,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1354536038, now seen corresponding path program 2 times [2024-06-27 19:58:47,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:47,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425194611] [2024-06-27 19:58:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:47,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:48,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:48,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425194611] [2024-06-27 19:58:48,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425194611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:48,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:48,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:48,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585960159] [2024-06-27 19:58:48,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:48,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:48,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:48,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:48,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:48,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 76 transitions, 567 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) [2024-06-27 19:58:48,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:48,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:48,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:48,744 INFO L124 PetriNetUnfolderBase]: 258/461 cut-off events. [2024-06-27 19:58:48,745 INFO L125 PetriNetUnfolderBase]: For 9666/9666 co-relation queries the response was YES. [2024-06-27 19:58:48,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2456 conditions, 461 events. 258/461 cut-off events. For 9666/9666 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1767 event pairs, 50 based on Foata normal form. 2/461 useless extension candidates. Maximal degree in co-relation 2409. Up to 412 conditions per place. [2024-06-27 19:58:48,747 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 79 selfloop transitions, 15 changer transitions 0/96 dead transitions. [2024-06-27 19:58:48,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 803 flow [2024-06-27 19:58:48,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:58:48,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:58:48,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 19:58:48,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-27 19:58:48,748 INFO L175 Difference]: Start difference. First operand has 98 places, 76 transitions, 567 flow. Second operand 10 states and 113 transitions. [2024-06-27 19:58:48,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 803 flow [2024-06-27 19:58:48,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 740 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 19:58:48,760 INFO L231 Difference]: Finished difference. Result has 99 places, 76 transitions, 538 flow [2024-06-27 19:58:48,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=538, PETRI_PLACES=99, PETRI_TRANSITIONS=76} [2024-06-27 19:58:48,764 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-27 19:58:48,765 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 76 transitions, 538 flow [2024-06-27 19:58:48,765 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) [2024-06-27 19:58:48,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:48,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:48,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:58:48,765 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)] === [2024-06-27 19:58:48,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:48,765 INFO L85 PathProgramCache]: Analyzing trace with hash 186685272, now seen corresponding path program 2 times [2024-06-27 19:58:48,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:48,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842075290] [2024-06-27 19:58:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:48,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:49,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:49,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842075290] [2024-06-27 19:58:49,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842075290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:49,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:49,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:49,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738054767] [2024-06-27 19:58:49,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:49,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:49,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:49,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:49,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:49,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:49,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 76 transitions, 538 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) [2024-06-27 19:58:49,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:49,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:49,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:49,626 INFO L124 PetriNetUnfolderBase]: 267/476 cut-off events. [2024-06-27 19:58:49,627 INFO L125 PetriNetUnfolderBase]: For 10687/10687 co-relation queries the response was YES. [2024-06-27 19:58:49,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2498 conditions, 476 events. 267/476 cut-off events. For 10687/10687 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1851 event pairs, 46 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2450. Up to 325 conditions per place. [2024-06-27 19:58:49,630 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 62 selfloop transitions, 34 changer transitions 0/98 dead transitions. [2024-06-27 19:58:49,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 816 flow [2024-06-27 19:58:49,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:58:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:58:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 19:58:49,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185185185185185 [2024-06-27 19:58:49,632 INFO L175 Difference]: Start difference. First operand has 99 places, 76 transitions, 538 flow. Second operand 9 states and 113 transitions. [2024-06-27 19:58:49,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 816 flow [2024-06-27 19:58:49,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 784 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 19:58:49,645 INFO L231 Difference]: Finished difference. Result has 99 places, 79 transitions, 618 flow [2024-06-27 19:58:49,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=618, PETRI_PLACES=99, PETRI_TRANSITIONS=79} [2024-06-27 19:58:49,646 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-27 19:58:49,647 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 79 transitions, 618 flow [2024-06-27 19:58:49,647 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) [2024-06-27 19:58:49,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:49,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:49,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:58:49,647 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)] === [2024-06-27 19:58:49,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:49,647 INFO L85 PathProgramCache]: Analyzing trace with hash 186512292, now seen corresponding path program 3 times [2024-06-27 19:58:49,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:49,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31720461] [2024-06-27 19:58:49,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:49,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:50,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:50,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31720461] [2024-06-27 19:58:50,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31720461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:50,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:50,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:50,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321016321] [2024-06-27 19:58:50,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:50,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:50,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:50,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:50,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:50,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:50,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 79 transitions, 618 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) [2024-06-27 19:58:50,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:50,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:50,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:50,493 INFO L124 PetriNetUnfolderBase]: 276/491 cut-off events. [2024-06-27 19:58:50,493 INFO L125 PetriNetUnfolderBase]: For 11688/11688 co-relation queries the response was YES. [2024-06-27 19:58:50,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2729 conditions, 491 events. 276/491 cut-off events. For 11688/11688 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1938 event pairs, 46 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 2680. Up to 340 conditions per place. [2024-06-27 19:58:50,496 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 68 selfloop transitions, 33 changer transitions 0/103 dead transitions. [2024-06-27 19:58:50,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 103 transitions, 928 flow [2024-06-27 19:58:50,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:58:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:58:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 19:58:50,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-27 19:58:50,497 INFO L175 Difference]: Start difference. First operand has 99 places, 79 transitions, 618 flow. Second operand 9 states and 116 transitions. [2024-06-27 19:58:50,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 103 transitions, 928 flow [2024-06-27 19:58:50,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 103 transitions, 838 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:50,509 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 644 flow [2024-06-27 19:58:50,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=644, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-06-27 19:58:50,509 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-27 19:58:50,509 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 644 flow [2024-06-27 19:58:50,509 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) [2024-06-27 19:58:50,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:50,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:50,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:58:50,510 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)] === [2024-06-27 19:58:50,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:50,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1236448234, now seen corresponding path program 4 times [2024-06-27 19:58:50,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:50,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768428357] [2024-06-27 19:58:50,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:50,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:51,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:51,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768428357] [2024-06-27 19:58:51,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768428357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:51,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:51,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:51,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359291814] [2024-06-27 19:58:51,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:51,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:51,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:51,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:51,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:51,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:51,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 644 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) [2024-06-27 19:58:51,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:51,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:51,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:51,307 INFO L124 PetriNetUnfolderBase]: 279/496 cut-off events. [2024-06-27 19:58:51,308 INFO L125 PetriNetUnfolderBase]: For 11595/11595 co-relation queries the response was YES. [2024-06-27 19:58:51,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 496 events. 279/496 cut-off events. For 11595/11595 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1974 event pairs, 44 based on Foata normal form. 1/495 useless extension candidates. Maximal degree in co-relation 2757. Up to 410 conditions per place. [2024-06-27 19:58:51,310 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 77 selfloop transitions, 31 changer transitions 0/110 dead transitions. [2024-06-27 19:58:51,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 110 transitions, 1035 flow [2024-06-27 19:58:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:58:51,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:58:51,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 19:58:51,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-27 19:58:51,312 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 644 flow. Second operand 9 states and 107 transitions. [2024-06-27 19:58:51,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 110 transitions, 1035 flow [2024-06-27 19:58:51,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 110 transitions, 915 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:51,324 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 779 flow [2024-06-27 19:58:51,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=779, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2024-06-27 19:58:51,324 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-27 19:58:51,324 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 779 flow [2024-06-27 19:58:51,324 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) [2024-06-27 19:58:51,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:51,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:51,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:58:51,324 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)] === [2024-06-27 19:58:51,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1236448358, now seen corresponding path program 3 times [2024-06-27 19:58:51,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:51,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518819038] [2024-06-27 19:58:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:51,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:51,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:51,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518819038] [2024-06-27 19:58:51,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518819038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:51,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:51,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:51,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964210086] [2024-06-27 19:58:51,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:51,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:51,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:51,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:51,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:52,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:52,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 779 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) [2024-06-27 19:58:52,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:52,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:52,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:52,253 INFO L124 PetriNetUnfolderBase]: 283/504 cut-off events. [2024-06-27 19:58:52,253 INFO L125 PetriNetUnfolderBase]: For 12963/12963 co-relation queries the response was YES. [2024-06-27 19:58:52,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2934 conditions, 504 events. 283/504 cut-off events. For 12963/12963 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2007 event pairs, 51 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 2879. Up to 451 conditions per place. [2024-06-27 19:58:52,256 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 88 selfloop transitions, 20 changer transitions 0/110 dead transitions. [2024-06-27 19:58:52,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 110 transitions, 1043 flow [2024-06-27 19:58:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:58:52,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:58:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 19:58:52,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-27 19:58:52,258 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 779 flow. Second operand 9 states and 102 transitions. [2024-06-27 19:58:52,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 110 transitions, 1043 flow [2024-06-27 19:58:52,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 110 transitions, 983 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 19:58:52,274 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 783 flow [2024-06-27 19:58:52,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=783, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2024-06-27 19:58:52,275 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-27 19:58:52,275 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 783 flow [2024-06-27 19:58:52,275 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) [2024-06-27 19:58:52,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:52,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:52,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:58:52,275 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)] === [2024-06-27 19:58:52,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:52,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1469508870, now seen corresponding path program 1 times [2024-06-27 19:58:52,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:52,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058147041] [2024-06-27 19:58:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:52,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:52,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:52,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058147041] [2024-06-27 19:58:52,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058147041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:52,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:52,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:52,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528716816] [2024-06-27 19:58:52,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:52,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:52,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:52,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:52,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:52,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:52,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 783 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) [2024-06-27 19:58:52,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:52,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:52,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:53,201 INFO L124 PetriNetUnfolderBase]: 279/498 cut-off events. [2024-06-27 19:58:53,201 INFO L125 PetriNetUnfolderBase]: For 12509/12509 co-relation queries the response was YES. [2024-06-27 19:58:53,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 498 events. 279/498 cut-off events. For 12509/12509 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1976 event pairs, 45 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2748. Up to 462 conditions per place. [2024-06-27 19:58:53,204 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 95 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2024-06-27 19:58:53,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 111 transitions, 1057 flow [2024-06-27 19:58:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:58:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:58:53,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 19:58:53,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-27 19:58:53,206 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 783 flow. Second operand 9 states and 98 transitions. [2024-06-27 19:58:53,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 111 transitions, 1057 flow [2024-06-27 19:58:53,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 111 transitions, 1003 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:53,221 INFO L231 Difference]: Finished difference. Result has 115 places, 99 transitions, 796 flow [2024-06-27 19:58:53,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=796, PETRI_PLACES=115, PETRI_TRANSITIONS=99} [2024-06-27 19:58:53,222 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 86 predicate places. [2024-06-27 19:58:53,222 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 99 transitions, 796 flow [2024-06-27 19:58:53,222 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) [2024-06-27 19:58:53,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:53,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:53,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:58:53,222 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)] === [2024-06-27 19:58:53,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:53,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1711296722, now seen corresponding path program 5 times [2024-06-27 19:58:53,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:53,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327742421] [2024-06-27 19:58:53,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:53,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:53,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:53,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327742421] [2024-06-27 19:58:53,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327742421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:53,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:53,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:53,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865653458] [2024-06-27 19:58:53,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:53,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:53,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:53,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:53,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:53,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:53,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 99 transitions, 796 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) [2024-06-27 19:58:53,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:53,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:53,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:54,031 INFO L124 PetriNetUnfolderBase]: 282/503 cut-off events. [2024-06-27 19:58:54,031 INFO L125 PetriNetUnfolderBase]: For 12608/12608 co-relation queries the response was YES. [2024-06-27 19:58:54,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2840 conditions, 503 events. 282/503 cut-off events. For 12608/12608 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2024 event pairs, 45 based on Foata normal form. 1/502 useless extension candidates. Maximal degree in co-relation 2783. Up to 480 conditions per place. [2024-06-27 19:58:54,034 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 97 selfloop transitions, 14 changer transitions 0/113 dead transitions. [2024-06-27 19:58:54,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 113 transitions, 1083 flow [2024-06-27 19:58:54,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:58:54,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:58:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 19:58:54,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-27 19:58:54,035 INFO L175 Difference]: Start difference. First operand has 115 places, 99 transitions, 796 flow. Second operand 9 states and 95 transitions. [2024-06-27 19:58:54,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 113 transitions, 1083 flow [2024-06-27 19:58:54,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 1032 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:54,050 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 834 flow [2024-06-27 19:58:54,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=834, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2024-06-27 19:58:54,050 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-06-27 19:58:54,051 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 834 flow [2024-06-27 19:58:54,051 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) [2024-06-27 19:58:54,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:54,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:54,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:58:54,051 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)] === [2024-06-27 19:58:54,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:54,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1483395572, now seen corresponding path program 6 times [2024-06-27 19:58:54,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:54,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880757858] [2024-06-27 19:58:54,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:54,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:54,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:54,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880757858] [2024-06-27 19:58:54,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880757858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:54,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:54,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:54,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191264027] [2024-06-27 19:58:54,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:54,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:54,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:54,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:54,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:54,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 834 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) [2024-06-27 19:58:54,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:54,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:54,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:54,919 INFO L124 PetriNetUnfolderBase]: 291/518 cut-off events. [2024-06-27 19:58:54,919 INFO L125 PetriNetUnfolderBase]: For 14710/14710 co-relation queries the response was YES. [2024-06-27 19:58:54,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2979 conditions, 518 events. 291/518 cut-off events. For 14710/14710 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2098 event pairs, 41 based on Foata normal form. 3/519 useless extension candidates. Maximal degree in co-relation 2920. Up to 434 conditions per place. [2024-06-27 19:58:54,922 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 94 selfloop transitions, 25 changer transitions 0/121 dead transitions. [2024-06-27 19:58:54,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 121 transitions, 1159 flow [2024-06-27 19:58:54,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:58:54,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:58:54,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 19:58:54,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-27 19:58:54,924 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 834 flow. Second operand 9 states and 107 transitions. [2024-06-27 19:58:54,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 121 transitions, 1159 flow [2024-06-27 19:58:54,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 121 transitions, 1124 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 19:58:54,942 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 914 flow [2024-06-27 19:58:54,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=914, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2024-06-27 19:58:54,942 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-27 19:58:54,942 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 914 flow [2024-06-27 19:58:54,942 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) [2024-06-27 19:58:54,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:54,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:54,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:58:54,943 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)] === [2024-06-27 19:58:54,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1483222592, now seen corresponding path program 7 times [2024-06-27 19:58:54,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:54,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267788157] [2024-06-27 19:58:54,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:54,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:55,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:55,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267788157] [2024-06-27 19:58:55,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267788157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:55,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:55,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:55,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818639404] [2024-06-27 19:58:55,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:55,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:55,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:55,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:55,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:55,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 914 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) [2024-06-27 19:58:55,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:55,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:55,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:55,785 INFO L124 PetriNetUnfolderBase]: 300/533 cut-off events. [2024-06-27 19:58:55,786 INFO L125 PetriNetUnfolderBase]: For 15979/15979 co-relation queries the response was YES. [2024-06-27 19:58:55,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 533 events. 300/533 cut-off events. For 15979/15979 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2185 event pairs, 41 based on Foata normal form. 3/534 useless extension candidates. Maximal degree in co-relation 3141. Up to 449 conditions per place. [2024-06-27 19:58:55,789 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 96 selfloop transitions, 27 changer transitions 0/125 dead transitions. [2024-06-27 19:58:55,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 125 transitions, 1260 flow [2024-06-27 19:58:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:58:55,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:58:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 19:58:55,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-06-27 19:58:55,791 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 914 flow. Second operand 9 states and 106 transitions. [2024-06-27 19:58:55,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 125 transitions, 1260 flow [2024-06-27 19:58:55,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 125 transitions, 1169 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:55,816 INFO L231 Difference]: Finished difference. Result has 125 places, 110 transitions, 948 flow [2024-06-27 19:58:55,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=948, PETRI_PLACES=125, PETRI_TRANSITIONS=110} [2024-06-27 19:58:55,816 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-27 19:58:55,816 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 110 transitions, 948 flow [2024-06-27 19:58:55,817 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) [2024-06-27 19:58:55,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:55,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:55,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:58:55,817 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)] === [2024-06-27 19:58:55,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:55,817 INFO L85 PathProgramCache]: Analyzing trace with hash 115348908, now seen corresponding path program 8 times [2024-06-27 19:58:55,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:55,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495554813] [2024-06-27 19:58:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:55,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:56,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:56,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495554813] [2024-06-27 19:58:56,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495554813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:56,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:56,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:56,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189616319] [2024-06-27 19:58:56,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:56,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:56,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:56,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:56,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:56,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:56,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 110 transitions, 948 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) [2024-06-27 19:58:56,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:56,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:56,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:56,763 INFO L124 PetriNetUnfolderBase]: 308/546 cut-off events. [2024-06-27 19:58:56,763 INFO L125 PetriNetUnfolderBase]: For 16186/16186 co-relation queries the response was YES. [2024-06-27 19:58:56,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 546 events. 308/546 cut-off events. For 16186/16186 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2241 event pairs, 41 based on Foata normal form. 1/545 useless extension candidates. Maximal degree in co-relation 3278. Up to 431 conditions per place. [2024-06-27 19:58:56,767 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 92 selfloop transitions, 38 changer transitions 0/132 dead transitions. [2024-06-27 19:58:56,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 132 transitions, 1416 flow [2024-06-27 19:58:56,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:58:56,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:58:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 19:58:56,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-27 19:58:56,769 INFO L175 Difference]: Start difference. First operand has 125 places, 110 transitions, 948 flow. Second operand 10 states and 119 transitions. [2024-06-27 19:58:56,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 132 transitions, 1416 flow [2024-06-27 19:58:56,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 132 transitions, 1315 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:56,796 INFO L231 Difference]: Finished difference. Result has 129 places, 114 transitions, 1041 flow [2024-06-27 19:58:56,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1041, PETRI_PLACES=129, PETRI_TRANSITIONS=114} [2024-06-27 19:58:56,796 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 100 predicate places. [2024-06-27 19:58:56,796 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 114 transitions, 1041 flow [2024-06-27 19:58:56,797 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) [2024-06-27 19:58:56,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:56,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:56,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:58:56,797 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)] === [2024-06-27 19:58:56,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:56,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1970589830, now seen corresponding path program 4 times [2024-06-27 19:58:56,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:56,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577951827] [2024-06-27 19:58:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:56,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:57,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:57,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577951827] [2024-06-27 19:58:57,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577951827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:57,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:57,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:58:57,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554594803] [2024-06-27 19:58:57,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:57,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:58:57,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:57,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:58:57,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:58:57,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:57,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 114 transitions, 1041 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) [2024-06-27 19:58:57,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:57,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:57,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:57,659 INFO L124 PetriNetUnfolderBase]: 305/541 cut-off events. [2024-06-27 19:58:57,659 INFO L125 PetriNetUnfolderBase]: For 16122/16122 co-relation queries the response was YES. [2024-06-27 19:58:57,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3275 conditions, 541 events. 305/541 cut-off events. For 16122/16122 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2209 event pairs, 53 based on Foata normal form. 2/541 useless extension candidates. Maximal degree in co-relation 3211. Up to 515 conditions per place. [2024-06-27 19:58:57,683 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 109 selfloop transitions, 13 changer transitions 0/124 dead transitions. [2024-06-27 19:58:57,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 124 transitions, 1307 flow [2024-06-27 19:58:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:58:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:58:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 19:58:57,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-27 19:58:57,685 INFO L175 Difference]: Start difference. First operand has 129 places, 114 transitions, 1041 flow. Second operand 9 states and 95 transitions. [2024-06-27 19:58:57,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 124 transitions, 1307 flow [2024-06-27 19:58:57,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 124 transitions, 1238 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:57,712 INFO L231 Difference]: Finished difference. Result has 132 places, 114 transitions, 1002 flow [2024-06-27 19:58:57,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1002, PETRI_PLACES=132, PETRI_TRANSITIONS=114} [2024-06-27 19:58:57,712 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 103 predicate places. [2024-06-27 19:58:57,713 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 114 transitions, 1002 flow [2024-06-27 19:58:57,713 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) [2024-06-27 19:58:57,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:57,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:57,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:58:57,713 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)] === [2024-06-27 19:58:57,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:57,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2119142404, now seen corresponding path program 1 times [2024-06-27 19:58:57,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:57,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014503181] [2024-06-27 19:58:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:57,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:58,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:58,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014503181] [2024-06-27 19:58:58,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014503181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:58,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:58,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:58:58,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884693973] [2024-06-27 19:58:58,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:58,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:58:58,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:58,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:58:58,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:58:58,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:58,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 114 transitions, 1002 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) [2024-06-27 19:58:58,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:58,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:58,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:58,839 INFO L124 PetriNetUnfolderBase]: 352/634 cut-off events. [2024-06-27 19:58:58,839 INFO L125 PetriNetUnfolderBase]: For 27285/27285 co-relation queries the response was YES. [2024-06-27 19:58:58,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4246 conditions, 634 events. 352/634 cut-off events. For 27285/27285 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2747 event pairs, 46 based on Foata normal form. 2/634 useless extension candidates. Maximal degree in co-relation 4180. Up to 436 conditions per place. [2024-06-27 19:58:58,843 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 125 selfloop transitions, 21 changer transitions 0/148 dead transitions. [2024-06-27 19:58:58,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 148 transitions, 1541 flow [2024-06-27 19:58:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 19:58:58,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-27 19:58:58,844 INFO L175 Difference]: Start difference. First operand has 132 places, 114 transitions, 1002 flow. Second operand 11 states and 136 transitions. [2024-06-27 19:58:58,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 148 transitions, 1541 flow [2024-06-27 19:58:58,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 148 transitions, 1474 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 19:58:58,881 INFO L231 Difference]: Finished difference. Result has 134 places, 116 transitions, 1019 flow [2024-06-27 19:58:58,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1019, PETRI_PLACES=134, PETRI_TRANSITIONS=116} [2024-06-27 19:58:58,882 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2024-06-27 19:58:58,882 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 116 transitions, 1019 flow [2024-06-27 19:58:58,882 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) [2024-06-27 19:58:58,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:58,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:58,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:58:58,882 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)] === [2024-06-27 19:58:58,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:58,883 INFO L85 PathProgramCache]: Analyzing trace with hash 959061033, now seen corresponding path program 1 times [2024-06-27 19:58:58,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:58,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663947730] [2024-06-27 19:58:58,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:58,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:59,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:59,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663947730] [2024-06-27 19:58:59,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663947730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:59,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:59,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:58:59,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74952979] [2024-06-27 19:58:59,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:59,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:58:59,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:59,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:58:59,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:58:59,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:58:59,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 116 transitions, 1019 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) [2024-06-27 19:58:59,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:59,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:58:59,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:59,989 INFO L124 PetriNetUnfolderBase]: 374/670 cut-off events. [2024-06-27 19:58:59,989 INFO L125 PetriNetUnfolderBase]: For 30591/30591 co-relation queries the response was YES. [2024-06-27 19:58:59,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 670 events. 374/670 cut-off events. For 30591/30591 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2942 event pairs, 70 based on Foata normal form. 2/670 useless extension candidates. Maximal degree in co-relation 4549. Up to 586 conditions per place. [2024-06-27 19:58:59,995 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 122 selfloop transitions, 25 changer transitions 0/149 dead transitions. [2024-06-27 19:58:59,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 149 transitions, 1581 flow [2024-06-27 19:58:59,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 19:58:59,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-27 19:58:59,997 INFO L175 Difference]: Start difference. First operand has 134 places, 116 transitions, 1019 flow. Second operand 11 states and 131 transitions. [2024-06-27 19:58:59,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 149 transitions, 1581 flow [2024-06-27 19:59:00,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 149 transitions, 1511 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:00,039 INFO L231 Difference]: Finished difference. Result has 138 places, 124 transitions, 1147 flow [2024-06-27 19:59:00,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1147, PETRI_PLACES=138, PETRI_TRANSITIONS=124} [2024-06-27 19:59:00,040 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2024-06-27 19:59:00,040 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 124 transitions, 1147 flow [2024-06-27 19:59:00,040 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) [2024-06-27 19:59:00,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:00,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:00,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:59:00,041 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)] === [2024-06-27 19:59:00,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:00,041 INFO L85 PathProgramCache]: Analyzing trace with hash 959057158, now seen corresponding path program 2 times [2024-06-27 19:59:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:00,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308660393] [2024-06-27 19:59:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:00,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:00,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:00,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308660393] [2024-06-27 19:59:00,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308660393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:00,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:00,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:00,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39817012] [2024-06-27 19:59:00,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:00,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:00,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:00,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:00,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:00,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:00,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 124 transitions, 1147 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) [2024-06-27 19:59:00,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:00,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:00,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:01,240 INFO L124 PetriNetUnfolderBase]: 378/678 cut-off events. [2024-06-27 19:59:01,241 INFO L125 PetriNetUnfolderBase]: For 32865/32865 co-relation queries the response was YES. [2024-06-27 19:59:01,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4700 conditions, 678 events. 378/678 cut-off events. For 32865/32865 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2995 event pairs, 64 based on Foata normal form. 2/678 useless extension candidates. Maximal degree in co-relation 4632. Up to 502 conditions per place. [2024-06-27 19:59:01,244 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 130 selfloop transitions, 24 changer transitions 0/156 dead transitions. [2024-06-27 19:59:01,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 156 transitions, 1688 flow [2024-06-27 19:59:01,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:59:01,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 19:59:01,253 INFO L175 Difference]: Start difference. First operand has 138 places, 124 transitions, 1147 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:59:01,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 156 transitions, 1688 flow [2024-06-27 19:59:01,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 156 transitions, 1616 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 19:59:01,298 INFO L231 Difference]: Finished difference. Result has 144 places, 125 transitions, 1145 flow [2024-06-27 19:59:01,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1145, PETRI_PLACES=144, PETRI_TRANSITIONS=125} [2024-06-27 19:59:01,299 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 115 predicate places. [2024-06-27 19:59:01,299 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 125 transitions, 1145 flow [2024-06-27 19:59:01,299 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) [2024-06-27 19:59:01,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:01,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:01,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:59:01,300 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)] === [2024-06-27 19:59:01,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash 959060878, now seen corresponding path program 3 times [2024-06-27 19:59:01,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:01,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708657523] [2024-06-27 19:59:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:01,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:02,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:02,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708657523] [2024-06-27 19:59:02,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708657523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:02,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:02,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654473672] [2024-06-27 19:59:02,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:02,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:02,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:02,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:02,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:02,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 125 transitions, 1145 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) [2024-06-27 19:59:02,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:02,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:02,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:02,466 INFO L124 PetriNetUnfolderBase]: 359/645 cut-off events. [2024-06-27 19:59:02,466 INFO L125 PetriNetUnfolderBase]: For 32443/32443 co-relation queries the response was YES. [2024-06-27 19:59:02,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 645 events. 359/645 cut-off events. For 32443/32443 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2836 event pairs, 55 based on Foata normal form. 14/657 useless extension candidates. Maximal degree in co-relation 3923. Up to 516 conditions per place. [2024-06-27 19:59:02,470 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 120 selfloop transitions, 22 changer transitions 11/155 dead transitions. [2024-06-27 19:59:02,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 155 transitions, 1584 flow [2024-06-27 19:59:02,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 19:59:02,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:59:02,481 INFO L175 Difference]: Start difference. First operand has 144 places, 125 transitions, 1145 flow. Second operand 12 states and 140 transitions. [2024-06-27 19:59:02,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 155 transitions, 1584 flow [2024-06-27 19:59:02,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 155 transitions, 1520 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:02,516 INFO L231 Difference]: Finished difference. Result has 147 places, 122 transitions, 1106 flow [2024-06-27 19:59:02,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1106, PETRI_PLACES=147, PETRI_TRANSITIONS=122} [2024-06-27 19:59:02,517 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2024-06-27 19:59:02,517 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 122 transitions, 1106 flow [2024-06-27 19:59:02,517 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) [2024-06-27 19:59:02,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:02,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:02,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:59:02,517 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)] === [2024-06-27 19:59:02,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:02,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1045896993, now seen corresponding path program 2 times [2024-06-27 19:59:02,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:02,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688315318] [2024-06-27 19:59:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:02,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:03,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:03,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688315318] [2024-06-27 19:59:03,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688315318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:03,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:03,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:03,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917479648] [2024-06-27 19:59:03,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:03,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:03,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:03,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:03,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:03,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:03,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 122 transitions, 1106 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) [2024-06-27 19:59:03,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:03,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:03,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:03,655 INFO L124 PetriNetUnfolderBase]: 336/600 cut-off events. [2024-06-27 19:59:03,656 INFO L125 PetriNetUnfolderBase]: For 23443/23443 co-relation queries the response was YES. [2024-06-27 19:59:03,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 600 events. 336/600 cut-off events. For 23443/23443 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2579 event pairs, 51 based on Foata normal form. 2/600 useless extension candidates. Maximal degree in co-relation 3726. Up to 553 conditions per place. [2024-06-27 19:59:03,659 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 126 selfloop transitions, 15 changer transitions 2/145 dead transitions. [2024-06-27 19:59:03,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 145 transitions, 1506 flow [2024-06-27 19:59:03,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:03,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:59:03,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-27 19:59:03,669 INFO L175 Difference]: Start difference. First operand has 147 places, 122 transitions, 1106 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:59:03,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 145 transitions, 1506 flow [2024-06-27 19:59:03,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 145 transitions, 1443 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 19:59:03,708 INFO L231 Difference]: Finished difference. Result has 147 places, 126 transitions, 1156 flow [2024-06-27 19:59:03,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1156, PETRI_PLACES=147, PETRI_TRANSITIONS=126} [2024-06-27 19:59:03,708 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2024-06-27 19:59:03,708 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 126 transitions, 1156 flow [2024-06-27 19:59:03,708 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) [2024-06-27 19:59:03,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:03,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:03,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:59:03,708 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)] === [2024-06-27 19:59:03,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:03,709 INFO L85 PathProgramCache]: Analyzing trace with hash 886830239, now seen corresponding path program 3 times [2024-06-27 19:59:03,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:03,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645291246] [2024-06-27 19:59:03,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:03,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:04,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:04,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645291246] [2024-06-27 19:59:04,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645291246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:04,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:04,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:04,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199542022] [2024-06-27 19:59:04,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:04,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:04,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:04,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:04,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:04,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:04,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 126 transitions, 1156 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) [2024-06-27 19:59:04,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:04,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:04,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:04,740 INFO L124 PetriNetUnfolderBase]: 332/594 cut-off events. [2024-06-27 19:59:04,740 INFO L125 PetriNetUnfolderBase]: For 22623/22623 co-relation queries the response was YES. [2024-06-27 19:59:04,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3660 conditions, 594 events. 332/594 cut-off events. For 22623/22623 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2548 event pairs, 50 based on Foata normal form. 2/594 useless extension candidates. Maximal degree in co-relation 3587. Up to 535 conditions per place. [2024-06-27 19:59:04,744 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 123 selfloop transitions, 19 changer transitions 2/146 dead transitions. [2024-06-27 19:59:04,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 146 transitions, 1493 flow [2024-06-27 19:59:04,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:04,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:04,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 19:59:04,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-27 19:59:04,745 INFO L175 Difference]: Start difference. First operand has 147 places, 126 transitions, 1156 flow. Second operand 10 states and 116 transitions. [2024-06-27 19:59:04,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 146 transitions, 1493 flow [2024-06-27 19:59:04,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 146 transitions, 1395 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:04,785 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 1101 flow [2024-06-27 19:59:04,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1101, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2024-06-27 19:59:04,785 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2024-06-27 19:59:04,785 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 1101 flow [2024-06-27 19:59:04,786 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) [2024-06-27 19:59:04,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:04,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:04,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:59:04,786 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)] === [2024-06-27 19:59:04,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:04,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1025354514, now seen corresponding path program 4 times [2024-06-27 19:59:04,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:04,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286884392] [2024-06-27 19:59:04,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:04,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:05,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:05,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286884392] [2024-06-27 19:59:05,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286884392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:05,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:05,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:05,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511359364] [2024-06-27 19:59:05,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:05,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:05,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:05,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:05,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:05,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:05,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 1101 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) [2024-06-27 19:59:05,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:05,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:05,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:05,781 INFO L124 PetriNetUnfolderBase]: 379/687 cut-off events. [2024-06-27 19:59:05,781 INFO L125 PetriNetUnfolderBase]: For 36972/36972 co-relation queries the response was YES. [2024-06-27 19:59:05,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 687 events. 379/687 cut-off events. For 36972/36972 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3073 event pairs, 59 based on Foata normal form. 2/687 useless extension candidates. Maximal degree in co-relation 4593. Up to 404 conditions per place. [2024-06-27 19:59:05,786 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 103 selfloop transitions, 48 changer transitions 0/153 dead transitions. [2024-06-27 19:59:05,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 153 transitions, 1647 flow [2024-06-27 19:59:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:05,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 19:59:05,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-06-27 19:59:05,787 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 1101 flow. Second operand 10 states and 131 transitions. [2024-06-27 19:59:05,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 153 transitions, 1647 flow [2024-06-27 19:59:05,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 153 transitions, 1572 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 19:59:05,839 INFO L231 Difference]: Finished difference. Result has 149 places, 128 transitions, 1168 flow [2024-06-27 19:59:05,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1168, PETRI_PLACES=149, PETRI_TRANSITIONS=128} [2024-06-27 19:59:05,840 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2024-06-27 19:59:05,840 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 128 transitions, 1168 flow [2024-06-27 19:59:05,840 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) [2024-06-27 19:59:05,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:05,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:05,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:59:05,840 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)] === [2024-06-27 19:59:05,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:05,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1025358234, now seen corresponding path program 5 times [2024-06-27 19:59:05,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:05,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656277550] [2024-06-27 19:59:05,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:05,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:06,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:06,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656277550] [2024-06-27 19:59:06,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656277550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:06,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:06,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:06,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286449275] [2024-06-27 19:59:06,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:06,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:06,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:06,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:06,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:06,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 128 transitions, 1168 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) [2024-06-27 19:59:06,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:06,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:06,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:06,916 INFO L124 PetriNetUnfolderBase]: 403/739 cut-off events. [2024-06-27 19:59:06,917 INFO L125 PetriNetUnfolderBase]: For 51001/51001 co-relation queries the response was YES. [2024-06-27 19:59:06,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5005 conditions, 739 events. 403/739 cut-off events. For 51001/51001 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3431 event pairs, 69 based on Foata normal form. 14/751 useless extension candidates. Maximal degree in co-relation 4933. Up to 511 conditions per place. [2024-06-27 19:59:06,921 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 98 selfloop transitions, 44 changer transitions 12/156 dead transitions. [2024-06-27 19:59:06,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 156 transitions, 1621 flow [2024-06-27 19:59:06,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 19:59:06,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-27 19:59:06,922 INFO L175 Difference]: Start difference. First operand has 149 places, 128 transitions, 1168 flow. Second operand 11 states and 142 transitions. [2024-06-27 19:59:06,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 156 transitions, 1621 flow [2024-06-27 19:59:06,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 156 transitions, 1512 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:06,980 INFO L231 Difference]: Finished difference. Result has 153 places, 125 transitions, 1150 flow [2024-06-27 19:59:06,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1150, PETRI_PLACES=153, PETRI_TRANSITIONS=125} [2024-06-27 19:59:06,980 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 124 predicate places. [2024-06-27 19:59:06,980 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 125 transitions, 1150 flow [2024-06-27 19:59:06,980 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) [2024-06-27 19:59:06,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:06,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:06,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:59:06,981 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)] === [2024-06-27 19:59:06,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:06,981 INFO L85 PathProgramCache]: Analyzing trace with hash 324811817, now seen corresponding path program 4 times [2024-06-27 19:59:06,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:06,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245290533] [2024-06-27 19:59:06,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:06,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:07,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245290533] [2024-06-27 19:59:07,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245290533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:07,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:07,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:07,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22566220] [2024-06-27 19:59:07,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:07,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:07,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:07,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:07,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 125 transitions, 1150 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) [2024-06-27 19:59:07,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:07,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:07,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:08,195 INFO L124 PetriNetUnfolderBase]: 387/705 cut-off events. [2024-06-27 19:59:08,195 INFO L125 PetriNetUnfolderBase]: For 43051/43051 co-relation queries the response was YES. [2024-06-27 19:59:08,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5063 conditions, 705 events. 387/705 cut-off events. For 43051/43051 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3222 event pairs, 59 based on Foata normal form. 2/705 useless extension candidates. Maximal degree in co-relation 4990. Up to 506 conditions per place. [2024-06-27 19:59:08,199 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 99 selfloop transitions, 48 changer transitions 0/149 dead transitions. [2024-06-27 19:59:08,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 149 transitions, 1692 flow [2024-06-27 19:59:08,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:08,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:08,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 19:59:08,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-27 19:59:08,200 INFO L175 Difference]: Start difference. First operand has 153 places, 125 transitions, 1150 flow. Second operand 10 states and 128 transitions. [2024-06-27 19:59:08,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 149 transitions, 1692 flow [2024-06-27 19:59:08,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 149 transitions, 1593 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:08,264 INFO L231 Difference]: Finished difference. Result has 154 places, 129 transitions, 1268 flow [2024-06-27 19:59:08,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1268, PETRI_PLACES=154, PETRI_TRANSITIONS=129} [2024-06-27 19:59:08,264 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2024-06-27 19:59:08,264 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 129 transitions, 1268 flow [2024-06-27 19:59:08,264 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) [2024-06-27 19:59:08,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:08,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:08,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:59:08,265 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)] === [2024-06-27 19:59:08,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:08,265 INFO L85 PathProgramCache]: Analyzing trace with hash -515614187, now seen corresponding path program 5 times [2024-06-27 19:59:08,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:08,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219967179] [2024-06-27 19:59:08,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:08,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:08,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:08,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219967179] [2024-06-27 19:59:08,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219967179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:08,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:08,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:08,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930582533] [2024-06-27 19:59:08,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:08,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:08,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:08,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:08,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:09,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:09,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 129 transitions, 1268 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) [2024-06-27 19:59:09,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:09,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:09,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:09,299 INFO L124 PetriNetUnfolderBase]: 393/715 cut-off events. [2024-06-27 19:59:09,299 INFO L125 PetriNetUnfolderBase]: For 45670/45670 co-relation queries the response was YES. [2024-06-27 19:59:09,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5236 conditions, 715 events. 393/715 cut-off events. For 45670/45670 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3267 event pairs, 59 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 5162. Up to 544 conditions per place. [2024-06-27 19:59:09,304 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 106 selfloop transitions, 41 changer transitions 2/151 dead transitions. [2024-06-27 19:59:09,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 151 transitions, 1672 flow [2024-06-27 19:59:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 19:59:09,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 19:59:09,305 INFO L175 Difference]: Start difference. First operand has 154 places, 129 transitions, 1268 flow. Second operand 10 states and 125 transitions. [2024-06-27 19:59:09,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 151 transitions, 1672 flow [2024-06-27 19:59:09,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 151 transitions, 1547 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:09,390 INFO L231 Difference]: Finished difference. Result has 158 places, 131 transitions, 1294 flow [2024-06-27 19:59:09,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1294, PETRI_PLACES=158, PETRI_TRANSITIONS=131} [2024-06-27 19:59:09,391 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 129 predicate places. [2024-06-27 19:59:09,391 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 131 transitions, 1294 flow [2024-06-27 19:59:09,391 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) [2024-06-27 19:59:09,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:09,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:09,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:59:09,391 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)] === [2024-06-27 19:59:09,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:09,392 INFO L85 PathProgramCache]: Analyzing trace with hash 330533673, now seen corresponding path program 1 times [2024-06-27 19:59:09,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:09,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253231781] [2024-06-27 19:59:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:09,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:10,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:10,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253231781] [2024-06-27 19:59:10,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253231781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:10,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:10,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:10,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171748715] [2024-06-27 19:59:10,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:10,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:10,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:10,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:10,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:10,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:10,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 131 transitions, 1294 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) [2024-06-27 19:59:10,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:10,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:10,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:10,412 INFO L124 PetriNetUnfolderBase]: 397/723 cut-off events. [2024-06-27 19:59:10,412 INFO L125 PetriNetUnfolderBase]: For 46547/46547 co-relation queries the response was YES. [2024-06-27 19:59:10,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 723 events. 397/723 cut-off events. For 46547/46547 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3322 event pairs, 70 based on Foata normal form. 2/723 useless extension candidates. Maximal degree in co-relation 5192. Up to 661 conditions per place. [2024-06-27 19:59:10,416 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 125 selfloop transitions, 21 changer transitions 1/149 dead transitions. [2024-06-27 19:59:10,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 149 transitions, 1638 flow [2024-06-27 19:59:10,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 19:59:10,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:59:10,417 INFO L175 Difference]: Start difference. First operand has 158 places, 131 transitions, 1294 flow. Second operand 9 states and 105 transitions. [2024-06-27 19:59:10,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 149 transitions, 1638 flow [2024-06-27 19:59:10,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 149 transitions, 1519 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:10,478 INFO L231 Difference]: Finished difference. Result has 159 places, 132 transitions, 1229 flow [2024-06-27 19:59:10,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1229, PETRI_PLACES=159, PETRI_TRANSITIONS=132} [2024-06-27 19:59:10,478 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-27 19:59:10,479 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 132 transitions, 1229 flow [2024-06-27 19:59:10,479 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) [2024-06-27 19:59:10,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:10,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:10,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:59:10,479 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)] === [2024-06-27 19:59:10,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:10,480 INFO L85 PathProgramCache]: Analyzing trace with hash 485131858, now seen corresponding path program 6 times [2024-06-27 19:59:10,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:10,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310836011] [2024-06-27 19:59:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:10,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:11,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:11,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:11,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310836011] [2024-06-27 19:59:11,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310836011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:11,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:11,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:11,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79362788] [2024-06-27 19:59:11,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:11,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:11,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:11,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:11,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:11,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:11,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 132 transitions, 1229 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) [2024-06-27 19:59:11,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:11,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:11,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:11,566 INFO L124 PetriNetUnfolderBase]: 376/684 cut-off events. [2024-06-27 19:59:11,566 INFO L125 PetriNetUnfolderBase]: For 45476/45476 co-relation queries the response was YES. [2024-06-27 19:59:11,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4359 conditions, 684 events. 376/684 cut-off events. For 45476/45476 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3117 event pairs, 51 based on Foata normal form. 14/696 useless extension candidates. Maximal degree in co-relation 4282. Up to 481 conditions per place. [2024-06-27 19:59:11,570 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 106 selfloop transitions, 34 changer transitions 14/156 dead transitions. [2024-06-27 19:59:11,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 156 transitions, 1657 flow [2024-06-27 19:59:11,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 19:59:11,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42333333333333334 [2024-06-27 19:59:11,571 INFO L175 Difference]: Start difference. First operand has 159 places, 132 transitions, 1229 flow. Second operand 10 states and 127 transitions. [2024-06-27 19:59:11,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 156 transitions, 1657 flow [2024-06-27 19:59:11,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 156 transitions, 1597 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:11,630 INFO L231 Difference]: Finished difference. Result has 161 places, 126 transitions, 1197 flow [2024-06-27 19:59:11,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1197, PETRI_PLACES=161, PETRI_TRANSITIONS=126} [2024-06-27 19:59:11,630 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 132 predicate places. [2024-06-27 19:59:11,631 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 126 transitions, 1197 flow [2024-06-27 19:59:11,631 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) [2024-06-27 19:59:11,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:11,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:11,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:59:11,631 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)] === [2024-06-27 19:59:11,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:11,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1030864919, now seen corresponding path program 6 times [2024-06-27 19:59:11,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:11,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762818457] [2024-06-27 19:59:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:11,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:12,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:12,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762818457] [2024-06-27 19:59:12,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762818457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:12,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:12,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:12,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157563563] [2024-06-27 19:59:12,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:12,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:12,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:12,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:12,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:12,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:12,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 126 transitions, 1197 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) [2024-06-27 19:59:12,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:12,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:12,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:12,643 INFO L124 PetriNetUnfolderBase]: 332/602 cut-off events. [2024-06-27 19:59:12,643 INFO L125 PetriNetUnfolderBase]: For 29648/29648 co-relation queries the response was YES. [2024-06-27 19:59:12,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3884 conditions, 602 events. 332/602 cut-off events. For 29648/29648 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2648 event pairs, 41 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 3807. Up to 453 conditions per place. [2024-06-27 19:59:12,647 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 102 selfloop transitions, 39 changer transitions 0/143 dead transitions. [2024-06-27 19:59:12,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 143 transitions, 1517 flow [2024-06-27 19:59:12,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:12,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 19:59:12,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:59:12,648 INFO L175 Difference]: Start difference. First operand has 161 places, 126 transitions, 1197 flow. Second operand 10 states and 120 transitions. [2024-06-27 19:59:12,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 143 transitions, 1517 flow [2024-06-27 19:59:12,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 143 transitions, 1372 flow, removed 22 selfloop flow, removed 13 redundant places. [2024-06-27 19:59:12,702 INFO L231 Difference]: Finished difference. Result has 158 places, 126 transitions, 1135 flow [2024-06-27 19:59:12,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1135, PETRI_PLACES=158, PETRI_TRANSITIONS=126} [2024-06-27 19:59:12,703 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 129 predicate places. [2024-06-27 19:59:12,703 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 126 transitions, 1135 flow [2024-06-27 19:59:12,703 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) [2024-06-27 19:59:12,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:12,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:12,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:59:12,703 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)] === [2024-06-27 19:59:12,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:12,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1433164187, now seen corresponding path program 7 times [2024-06-27 19:59:12,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:12,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215394630] [2024-06-27 19:59:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:12,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:13,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:13,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215394630] [2024-06-27 19:59:13,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215394630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:13,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:13,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:13,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166695392] [2024-06-27 19:59:13,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:13,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:13,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:13,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:13,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:13,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:13,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 126 transitions, 1135 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) [2024-06-27 19:59:13,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:13,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:13,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:13,843 INFO L124 PetriNetUnfolderBase]: 344/622 cut-off events. [2024-06-27 19:59:13,844 INFO L125 PetriNetUnfolderBase]: For 30578/30578 co-relation queries the response was YES. [2024-06-27 19:59:13,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3969 conditions, 622 events. 344/622 cut-off events. For 30578/30578 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2762 event pairs, 46 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 3893. Up to 574 conditions per place. [2024-06-27 19:59:13,847 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 123 selfloop transitions, 19 changer transitions 0/144 dead transitions. [2024-06-27 19:59:13,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 144 transitions, 1522 flow [2024-06-27 19:59:13,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:59:13,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 19:59:13,848 INFO L175 Difference]: Start difference. First operand has 158 places, 126 transitions, 1135 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:59:13,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 144 transitions, 1522 flow [2024-06-27 19:59:13,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 144 transitions, 1418 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:13,905 INFO L231 Difference]: Finished difference. Result has 159 places, 130 transitions, 1151 flow [2024-06-27 19:59:13,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1151, PETRI_PLACES=159, PETRI_TRANSITIONS=130} [2024-06-27 19:59:13,905 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-27 19:59:13,906 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 130 transitions, 1151 flow [2024-06-27 19:59:13,906 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) [2024-06-27 19:59:13,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:13,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:13,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:59:13,906 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)] === [2024-06-27 19:59:13,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:13,906 INFO L85 PathProgramCache]: Analyzing trace with hash -713427885, now seen corresponding path program 2 times [2024-06-27 19:59:13,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:13,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80733895] [2024-06-27 19:59:13,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:13,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:14,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:14,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80733895] [2024-06-27 19:59:14,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80733895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:14,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:14,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:14,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498926998] [2024-06-27 19:59:14,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:14,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:14,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:14,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:14,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:14,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:14,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 130 transitions, 1151 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) [2024-06-27 19:59:14,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:14,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:14,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:14,926 INFO L124 PetriNetUnfolderBase]: 348/630 cut-off events. [2024-06-27 19:59:14,926 INFO L125 PetriNetUnfolderBase]: For 31579/31579 co-relation queries the response was YES. [2024-06-27 19:59:14,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3954 conditions, 630 events. 348/630 cut-off events. For 31579/31579 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2814 event pairs, 46 based on Foata normal form. 2/630 useless extension candidates. Maximal degree in co-relation 3877. Up to 589 conditions per place. [2024-06-27 19:59:14,930 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 126 selfloop transitions, 17 changer transitions 0/145 dead transitions. [2024-06-27 19:59:14,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 145 transitions, 1484 flow [2024-06-27 19:59:14,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:14,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:14,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 19:59:14,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-27 19:59:14,931 INFO L175 Difference]: Start difference. First operand has 159 places, 130 transitions, 1151 flow. Second operand 9 states and 100 transitions. [2024-06-27 19:59:14,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 145 transitions, 1484 flow [2024-06-27 19:59:14,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 145 transitions, 1409 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:14,977 INFO L231 Difference]: Finished difference. Result has 162 places, 133 transitions, 1142 flow [2024-06-27 19:59:14,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1142, PETRI_PLACES=162, PETRI_TRANSITIONS=133} [2024-06-27 19:59:14,977 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2024-06-27 19:59:14,977 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 133 transitions, 1142 flow [2024-06-27 19:59:14,978 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) [2024-06-27 19:59:14,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:14,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:14,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:59:14,978 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)] === [2024-06-27 19:59:14,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:14,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2056540469, now seen corresponding path program 3 times [2024-06-27 19:59:14,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:14,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861133745] [2024-06-27 19:59:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:14,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:15,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:15,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861133745] [2024-06-27 19:59:15,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861133745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:15,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:15,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:15,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586416885] [2024-06-27 19:59:15,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:15,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:15,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:15,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:15,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:15,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:15,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 133 transitions, 1142 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) [2024-06-27 19:59:15,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:15,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:15,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:16,007 INFO L124 PetriNetUnfolderBase]: 352/638 cut-off events. [2024-06-27 19:59:16,007 INFO L125 PetriNetUnfolderBase]: For 32456/32456 co-relation queries the response was YES. [2024-06-27 19:59:16,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3960 conditions, 638 events. 352/638 cut-off events. For 32456/32456 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2875 event pairs, 46 based on Foata normal form. 2/638 useless extension candidates. Maximal degree in co-relation 3881. Up to 609 conditions per place. [2024-06-27 19:59:16,011 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 130 selfloop transitions, 13 changer transitions 0/145 dead transitions. [2024-06-27 19:59:16,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 145 transitions, 1462 flow [2024-06-27 19:59:16,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:16,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 19:59:16,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-27 19:59:16,013 INFO L175 Difference]: Start difference. First operand has 162 places, 133 transitions, 1142 flow. Second operand 9 states and 96 transitions. [2024-06-27 19:59:16,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 145 transitions, 1462 flow [2024-06-27 19:59:16,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 145 transitions, 1424 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:16,067 INFO L231 Difference]: Finished difference. Result has 165 places, 134 transitions, 1146 flow [2024-06-27 19:59:16,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1146, PETRI_PLACES=165, PETRI_TRANSITIONS=134} [2024-06-27 19:59:16,068 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 136 predicate places. [2024-06-27 19:59:16,068 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 134 transitions, 1146 flow [2024-06-27 19:59:16,068 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) [2024-06-27 19:59:16,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:16,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:16,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:59:16,068 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)] === [2024-06-27 19:59:16,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:16,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2056532533, now seen corresponding path program 8 times [2024-06-27 19:59:16,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:16,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434954818] [2024-06-27 19:59:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:16,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:16,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:16,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434954818] [2024-06-27 19:59:16,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434954818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:16,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:16,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:16,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511183417] [2024-06-27 19:59:16,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:16,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:16,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:16,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:16,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:17,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:17,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 134 transitions, 1146 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) [2024-06-27 19:59:17,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:17,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:17,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:17,326 INFO L124 PetriNetUnfolderBase]: 348/632 cut-off events. [2024-06-27 19:59:17,326 INFO L125 PetriNetUnfolderBase]: For 30518/30518 co-relation queries the response was YES. [2024-06-27 19:59:17,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3811 conditions, 632 events. 348/632 cut-off events. For 30518/30518 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2833 event pairs, 45 based on Foata normal form. 2/632 useless extension candidates. Maximal degree in co-relation 3731. Up to 584 conditions per place. [2024-06-27 19:59:17,330 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 126 selfloop transitions, 19 changer transitions 0/147 dead transitions. [2024-06-27 19:59:17,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 147 transitions, 1464 flow [2024-06-27 19:59:17,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:17,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:59:17,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-27 19:59:17,331 INFO L175 Difference]: Start difference. First operand has 165 places, 134 transitions, 1146 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:59:17,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 147 transitions, 1464 flow [2024-06-27 19:59:17,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 147 transitions, 1394 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:17,386 INFO L231 Difference]: Finished difference. Result has 167 places, 134 transitions, 1119 flow [2024-06-27 19:59:17,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1119, PETRI_PLACES=167, PETRI_TRANSITIONS=134} [2024-06-27 19:59:17,386 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-27 19:59:17,386 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 134 transitions, 1119 flow [2024-06-27 19:59:17,387 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) [2024-06-27 19:59:17,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:17,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:17,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:59:17,387 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)] === [2024-06-27 19:59:17,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:17,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1981666847, now seen corresponding path program 4 times [2024-06-27 19:59:17,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:17,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638937755] [2024-06-27 19:59:17,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:17,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:18,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:18,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638937755] [2024-06-27 19:59:18,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638937755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:18,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:18,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:18,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46378014] [2024-06-27 19:59:18,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:18,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:18,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:18,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:18,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:18,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:18,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 134 transitions, 1119 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) [2024-06-27 19:59:18,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:18,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:18,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:18,571 INFO L124 PetriNetUnfolderBase]: 352/640 cut-off events. [2024-06-27 19:59:18,571 INFO L125 PetriNetUnfolderBase]: For 31447/31447 co-relation queries the response was YES. [2024-06-27 19:59:18,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 640 events. 352/640 cut-off events. For 31447/31447 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2881 event pairs, 47 based on Foata normal form. 2/640 useless extension candidates. Maximal degree in co-relation 3737. Up to 606 conditions per place. [2024-06-27 19:59:18,575 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 132 selfloop transitions, 13 changer transitions 0/147 dead transitions. [2024-06-27 19:59:18,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 147 transitions, 1447 flow [2024-06-27 19:59:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:18,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 19:59:18,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-27 19:59:18,575 INFO L175 Difference]: Start difference. First operand has 167 places, 134 transitions, 1119 flow. Second operand 9 states and 97 transitions. [2024-06-27 19:59:18,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 147 transitions, 1447 flow [2024-06-27 19:59:18,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 147 transitions, 1378 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:18,626 INFO L231 Difference]: Finished difference. Result has 167 places, 135 transitions, 1094 flow [2024-06-27 19:59:18,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1094, PETRI_PLACES=167, PETRI_TRANSITIONS=135} [2024-06-27 19:59:18,626 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-27 19:59:18,627 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 135 transitions, 1094 flow [2024-06-27 19:59:18,627 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) [2024-06-27 19:59:18,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:18,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:18,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:59:18,627 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)] === [2024-06-27 19:59:18,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:18,627 INFO L85 PathProgramCache]: Analyzing trace with hash -713643366, now seen corresponding path program 7 times [2024-06-27 19:59:18,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:18,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105308401] [2024-06-27 19:59:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:18,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:19,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:19,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105308401] [2024-06-27 19:59:19,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105308401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:19,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:19,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:19,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725811207] [2024-06-27 19:59:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:19,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:19,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:19,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:19,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:19,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:19,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 135 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) [2024-06-27 19:59:19,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:19,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:19,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:19,574 INFO L124 PetriNetUnfolderBase]: 376/692 cut-off events. [2024-06-27 19:59:19,574 INFO L125 PetriNetUnfolderBase]: For 51405/51405 co-relation queries the response was YES. [2024-06-27 19:59:19,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4064 conditions, 692 events. 376/692 cut-off events. For 51405/51405 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3203 event pairs, 45 based on Foata normal form. 14/704 useless extension candidates. Maximal degree in co-relation 3983. Up to 546 conditions per place. [2024-06-27 19:59:19,577 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 118 selfloop transitions, 25 changer transitions 12/157 dead transitions. [2024-06-27 19:59:19,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 157 transitions, 1540 flow [2024-06-27 19:59:19,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:19,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 19:59:19,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033333333333333 [2024-06-27 19:59:19,578 INFO L175 Difference]: Start difference. First operand has 167 places, 135 transitions, 1094 flow. Second operand 10 states and 121 transitions. [2024-06-27 19:59:19,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 157 transitions, 1540 flow [2024-06-27 19:59:19,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 157 transitions, 1506 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:19,637 INFO L231 Difference]: Finished difference. Result has 170 places, 132 transitions, 1103 flow [2024-06-27 19:59:19,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1103, PETRI_PLACES=170, PETRI_TRANSITIONS=132} [2024-06-27 19:59:19,638 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 141 predicate places. [2024-06-27 19:59:19,638 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 132 transitions, 1103 flow [2024-06-27 19:59:19,638 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) [2024-06-27 19:59:19,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:19,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:19,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:59:19,638 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)] === [2024-06-27 19:59:19,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash 964254367, now seen corresponding path program 9 times [2024-06-27 19:59:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:19,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108022418] [2024-06-27 19:59:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:19,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:20,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:20,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108022418] [2024-06-27 19:59:20,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108022418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:20,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:20,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:20,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521462073] [2024-06-27 19:59:20,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:20,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:20,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:20,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:20,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:20,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:20,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 132 transitions, 1103 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) [2024-06-27 19:59:20,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:20,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:20,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:20,662 INFO L124 PetriNetUnfolderBase]: 346/638 cut-off events. [2024-06-27 19:59:20,662 INFO L125 PetriNetUnfolderBase]: For 34258/34258 co-relation queries the response was YES. [2024-06-27 19:59:20,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3881 conditions, 638 events. 346/638 cut-off events. For 34258/34258 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2921 event pairs, 36 based on Foata normal form. 2/638 useless extension candidates. Maximal degree in co-relation 3799. Up to 534 conditions per place. [2024-06-27 19:59:20,666 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 116 selfloop transitions, 30 changer transitions 2/150 dead transitions. [2024-06-27 19:59:20,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 150 transitions, 1499 flow [2024-06-27 19:59:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:20,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 19:59:20,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-27 19:59:20,667 INFO L175 Difference]: Start difference. First operand has 170 places, 132 transitions, 1103 flow. Second operand 10 states and 116 transitions. [2024-06-27 19:59:20,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 150 transitions, 1499 flow [2024-06-27 19:59:20,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 150 transitions, 1433 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:20,731 INFO L231 Difference]: Finished difference. Result has 172 places, 134 transitions, 1166 flow [2024-06-27 19:59:20,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1166, PETRI_PLACES=172, PETRI_TRANSITIONS=134} [2024-06-27 19:59:20,732 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 143 predicate places. [2024-06-27 19:59:20,732 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 134 transitions, 1166 flow [2024-06-27 19:59:20,732 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) [2024-06-27 19:59:20,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:20,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:20,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:59:20,733 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)] === [2024-06-27 19:59:20,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:20,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1776831273, now seen corresponding path program 5 times [2024-06-27 19:59:20,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:20,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26644189] [2024-06-27 19:59:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:20,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:21,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:21,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26644189] [2024-06-27 19:59:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26644189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:21,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:21,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:21,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035218257] [2024-06-27 19:59:21,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:21,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:21,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:21,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:21,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:21,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:21,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 134 transitions, 1166 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) [2024-06-27 19:59:21,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:21,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:21,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:21,751 INFO L124 PetriNetUnfolderBase]: 343/633 cut-off events. [2024-06-27 19:59:21,751 INFO L125 PetriNetUnfolderBase]: For 32144/32144 co-relation queries the response was YES. [2024-06-27 19:59:21,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3769 conditions, 633 events. 343/633 cut-off events. For 32144/32144 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2886 event pairs, 40 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 3686. Up to 599 conditions per place. [2024-06-27 19:59:21,755 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 132 selfloop transitions, 12 changer transitions 0/146 dead transitions. [2024-06-27 19:59:21,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 146 transitions, 1480 flow [2024-06-27 19:59:21,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:21,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:21,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 19:59:21,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-27 19:59:21,756 INFO L175 Difference]: Start difference. First operand has 172 places, 134 transitions, 1166 flow. Second operand 9 states and 95 transitions. [2024-06-27 19:59:21,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 146 transitions, 1480 flow [2024-06-27 19:59:21,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 146 transitions, 1367 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:21,820 INFO L231 Difference]: Finished difference. Result has 173 places, 134 transitions, 1081 flow [2024-06-27 19:59:21,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1081, PETRI_PLACES=173, PETRI_TRANSITIONS=134} [2024-06-27 19:59:21,821 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2024-06-27 19:59:21,821 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 134 transitions, 1081 flow [2024-06-27 19:59:21,821 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) [2024-06-27 19:59:21,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:21,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:21,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:59:21,821 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)] === [2024-06-27 19:59:21,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:21,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1510592082, now seen corresponding path program 8 times [2024-06-27 19:59:21,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:21,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190875015] [2024-06-27 19:59:21,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:21,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:22,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:22,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190875015] [2024-06-27 19:59:22,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190875015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:22,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:22,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:22,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170715257] [2024-06-27 19:59:22,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:22,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:22,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:22,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:22,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:22,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:22,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 134 transitions, 1081 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) [2024-06-27 19:59:22,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:22,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:22,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:22,810 INFO L124 PetriNetUnfolderBase]: 367/685 cut-off events. [2024-06-27 19:59:22,810 INFO L125 PetriNetUnfolderBase]: For 53452/53452 co-relation queries the response was YES. [2024-06-27 19:59:22,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3950 conditions, 685 events. 367/685 cut-off events. For 53452/53452 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3196 event pairs, 44 based on Foata normal form. 14/697 useless extension candidates. Maximal degree in co-relation 3866. Up to 560 conditions per place. [2024-06-27 19:59:22,814 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 121 selfloop transitions, 14 changer transitions 17/154 dead transitions. [2024-06-27 19:59:22,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 154 transitions, 1517 flow [2024-06-27 19:59:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:22,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:59:22,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 19:59:22,815 INFO L175 Difference]: Start difference. First operand has 173 places, 134 transitions, 1081 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:59:22,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 154 transitions, 1517 flow [2024-06-27 19:59:22,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 154 transitions, 1465 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:22,881 INFO L231 Difference]: Finished difference. Result has 175 places, 125 transitions, 1012 flow [2024-06-27 19:59:22,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1012, PETRI_PLACES=175, PETRI_TRANSITIONS=125} [2024-06-27 19:59:22,881 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2024-06-27 19:59:22,881 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 125 transitions, 1012 flow [2024-06-27 19:59:22,882 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) [2024-06-27 19:59:22,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:22,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:22,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:59:22,882 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)] === [2024-06-27 19:59:22,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:22,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1164801670, now seen corresponding path program 9 times [2024-06-27 19:59:22,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:22,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667680219] [2024-06-27 19:59:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:22,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:23,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:23,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667680219] [2024-06-27 19:59:23,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667680219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:23,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:23,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:23,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125346370] [2024-06-27 19:59:23,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:23,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:23,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:23,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:23,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:23,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 125 transitions, 1012 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) [2024-06-27 19:59:23,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:23,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:23,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:23,884 INFO L124 PetriNetUnfolderBase]: 341/647 cut-off events. [2024-06-27 19:59:23,884 INFO L125 PetriNetUnfolderBase]: For 54984/54984 co-relation queries the response was YES. [2024-06-27 19:59:23,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3794 conditions, 647 events. 341/647 cut-off events. For 54984/54984 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3009 event pairs, 46 based on Foata normal form. 14/659 useless extension candidates. Maximal degree in co-relation 3709. Up to 519 conditions per place. [2024-06-27 19:59:23,888 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 112 selfloop transitions, 20 changer transitions 13/147 dead transitions. [2024-06-27 19:59:23,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 147 transitions, 1446 flow [2024-06-27 19:59:23,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:23,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 19:59:23,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-27 19:59:23,889 INFO L175 Difference]: Start difference. First operand has 175 places, 125 transitions, 1012 flow. Second operand 10 states and 119 transitions. [2024-06-27 19:59:23,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 147 transitions, 1446 flow [2024-06-27 19:59:23,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 147 transitions, 1368 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-06-27 19:59:23,951 INFO L231 Difference]: Finished difference. Result has 169 places, 122 transitions, 972 flow [2024-06-27 19:59:23,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=972, PETRI_PLACES=169, PETRI_TRANSITIONS=122} [2024-06-27 19:59:23,951 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-27 19:59:23,952 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 122 transitions, 972 flow [2024-06-27 19:59:23,952 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) [2024-06-27 19:59:23,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:23,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:23,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:59:23,952 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)] === [2024-06-27 19:59:23,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1761547255, now seen corresponding path program 10 times [2024-06-27 19:59:23,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:23,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26281601] [2024-06-27 19:59:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:23,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:24,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:24,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26281601] [2024-06-27 19:59:24,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26281601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:24,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:24,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:24,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001931737] [2024-06-27 19:59:24,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:24,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:24,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:24,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:24,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:24,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:24,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 122 transitions, 972 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) [2024-06-27 19:59:24,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:24,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:24,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:25,191 INFO L124 PetriNetUnfolderBase]: 311/585 cut-off events. [2024-06-27 19:59:25,192 INFO L125 PetriNetUnfolderBase]: For 32835/32835 co-relation queries the response was YES. [2024-06-27 19:59:25,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3460 conditions, 585 events. 311/585 cut-off events. For 32835/32835 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2656 event pairs, 36 based on Foata normal form. 2/585 useless extension candidates. Maximal degree in co-relation 3378. Up to 541 conditions per place. [2024-06-27 19:59:25,195 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 120 selfloop transitions, 16 changer transitions 0/138 dead transitions. [2024-06-27 19:59:25,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 138 transitions, 1334 flow [2024-06-27 19:59:25,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:25,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:59:25,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-27 19:59:25,196 INFO L175 Difference]: Start difference. First operand has 169 places, 122 transitions, 972 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:59:25,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 138 transitions, 1334 flow [2024-06-27 19:59:25,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 138 transitions, 1240 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-27 19:59:25,257 INFO L231 Difference]: Finished difference. Result has 167 places, 124 transitions, 979 flow [2024-06-27 19:59:25,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=979, PETRI_PLACES=167, PETRI_TRANSITIONS=124} [2024-06-27 19:59:25,258 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-27 19:59:25,258 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 124 transitions, 979 flow [2024-06-27 19:59:25,258 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) [2024-06-27 19:59:25,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:25,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:25,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:59:25,258 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)] === [2024-06-27 19:59:25,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:25,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2056325143, now seen corresponding path program 11 times [2024-06-27 19:59:25,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:25,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269050012] [2024-06-27 19:59:25,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:25,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:25,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:25,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269050012] [2024-06-27 19:59:25,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269050012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:25,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:25,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:25,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742572439] [2024-06-27 19:59:25,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:25,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:25,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:25,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:26,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:26,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 124 transitions, 979 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) [2024-06-27 19:59:26,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:26,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:26,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:26,289 INFO L124 PetriNetUnfolderBase]: 317/595 cut-off events. [2024-06-27 19:59:26,289 INFO L125 PetriNetUnfolderBase]: For 34349/34349 co-relation queries the response was YES. [2024-06-27 19:59:26,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 595 events. 317/595 cut-off events. For 34349/34349 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2712 event pairs, 36 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 3440. Up to 530 conditions per place. [2024-06-27 19:59:26,292 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 117 selfloop transitions, 22 changer transitions 0/141 dead transitions. [2024-06-27 19:59:26,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 141 transitions, 1353 flow [2024-06-27 19:59:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:26,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:59:26,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-27 19:59:26,293 INFO L175 Difference]: Start difference. First operand has 167 places, 124 transitions, 979 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:59:26,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 141 transitions, 1353 flow [2024-06-27 19:59:26,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 141 transitions, 1268 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:26,356 INFO L231 Difference]: Finished difference. Result has 169 places, 126 transitions, 1011 flow [2024-06-27 19:59:26,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1011, PETRI_PLACES=169, PETRI_TRANSITIONS=126} [2024-06-27 19:59:26,356 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-27 19:59:26,356 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 126 transitions, 1011 flow [2024-06-27 19:59:26,356 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) [2024-06-27 19:59:26,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:26,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:26,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 19:59:26,357 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)] === [2024-06-27 19:59:26,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:26,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1264738497, now seen corresponding path program 12 times [2024-06-27 19:59:26,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:26,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354958292] [2024-06-27 19:59:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:26,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:27,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:27,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354958292] [2024-06-27 19:59:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354958292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:27,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:27,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706535180] [2024-06-27 19:59:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:27,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:27,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:27,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:27,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:27,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:27,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 126 transitions, 1011 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) [2024-06-27 19:59:27,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:27,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:27,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:27,325 INFO L124 PetriNetUnfolderBase]: 323/605 cut-off events. [2024-06-27 19:59:27,325 INFO L125 PetriNetUnfolderBase]: For 35801/35801 co-relation queries the response was YES. [2024-06-27 19:59:27,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3614 conditions, 605 events. 323/605 cut-off events. For 35801/35801 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2762 event pairs, 36 based on Foata normal form. 2/605 useless extension candidates. Maximal degree in co-relation 3533. Up to 527 conditions per place. [2024-06-27 19:59:27,329 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 114 selfloop transitions, 26 changer transitions 0/142 dead transitions. [2024-06-27 19:59:27,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 142 transitions, 1389 flow [2024-06-27 19:59:27,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:27,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:59:27,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-27 19:59:27,330 INFO L175 Difference]: Start difference. First operand has 169 places, 126 transitions, 1011 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:59:27,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 142 transitions, 1389 flow [2024-06-27 19:59:27,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 142 transitions, 1288 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:27,393 INFO L231 Difference]: Finished difference. Result has 171 places, 128 transitions, 1039 flow [2024-06-27 19:59:27,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1039, PETRI_PLACES=171, PETRI_TRANSITIONS=128} [2024-06-27 19:59:27,393 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2024-06-27 19:59:27,393 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 128 transitions, 1039 flow [2024-06-27 19:59:27,394 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) [2024-06-27 19:59:27,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:27,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:27,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 19:59:27,394 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)] === [2024-06-27 19:59:27,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1968354300, now seen corresponding path program 10 times [2024-06-27 19:59:27,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:27,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345087534] [2024-06-27 19:59:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:27,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:27,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345087534] [2024-06-27 19:59:27,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345087534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:27,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:27,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:27,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190831517] [2024-06-27 19:59:27,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:27,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:27,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:27,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:27,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:28,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:28,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 128 transitions, 1039 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) [2024-06-27 19:59:28,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:28,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:28,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:28,279 INFO L124 PetriNetUnfolderBase]: 327/613 cut-off events. [2024-06-27 19:59:28,279 INFO L125 PetriNetUnfolderBase]: For 36640/36640 co-relation queries the response was YES. [2024-06-27 19:59:28,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3638 conditions, 613 events. 327/613 cut-off events. For 36640/36640 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2813 event pairs, 40 based on Foata normal form. 2/613 useless extension candidates. Maximal degree in co-relation 3556. Up to 522 conditions per place. [2024-06-27 19:59:28,283 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 109 selfloop transitions, 31 changer transitions 0/142 dead transitions. [2024-06-27 19:59:28,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 142 transitions, 1497 flow [2024-06-27 19:59:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:28,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:59:28,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-27 19:59:28,284 INFO L175 Difference]: Start difference. First operand has 171 places, 128 transitions, 1039 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:59:28,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 142 transitions, 1497 flow [2024-06-27 19:59:28,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 142 transitions, 1384 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:28,347 INFO L231 Difference]: Finished difference. Result has 173 places, 129 transitions, 1018 flow [2024-06-27 19:59:28,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1018, PETRI_PLACES=173, PETRI_TRANSITIONS=129} [2024-06-27 19:59:28,348 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2024-06-27 19:59:28,348 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 129 transitions, 1018 flow [2024-06-27 19:59:28,348 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) [2024-06-27 19:59:28,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:28,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:28,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 19:59:28,348 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)] === [2024-06-27 19:59:28,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:28,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1264882647, now seen corresponding path program 13 times [2024-06-27 19:59:28,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:28,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079852788] [2024-06-27 19:59:28,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:28,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:28,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:28,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079852788] [2024-06-27 19:59:28,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079852788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:28,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:28,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:28,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934240241] [2024-06-27 19:59:28,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:28,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:28,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:28,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:28,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:29,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:29,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 129 transitions, 1018 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) [2024-06-27 19:59:29,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:29,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:29,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:29,373 INFO L124 PetriNetUnfolderBase]: 323/607 cut-off events. [2024-06-27 19:59:29,373 INFO L125 PetriNetUnfolderBase]: For 33023/33023 co-relation queries the response was YES. [2024-06-27 19:59:29,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3389 conditions, 607 events. 323/607 cut-off events. For 33023/33023 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2792 event pairs, 35 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 3306. Up to 491 conditions per place. [2024-06-27 19:59:29,376 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 106 selfloop transitions, 38 changer transitions 0/146 dead transitions. [2024-06-27 19:59:29,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 146 transitions, 1410 flow [2024-06-27 19:59:29,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 19:59:29,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-27 19:59:29,377 INFO L175 Difference]: Start difference. First operand has 173 places, 129 transitions, 1018 flow. Second operand 10 states and 116 transitions. [2024-06-27 19:59:29,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 146 transitions, 1410 flow [2024-06-27 19:59:29,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 146 transitions, 1305 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:29,436 INFO L231 Difference]: Finished difference. Result has 174 places, 131 transitions, 1070 flow [2024-06-27 19:59:29,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1070, PETRI_PLACES=174, PETRI_TRANSITIONS=131} [2024-06-27 19:59:29,436 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2024-06-27 19:59:29,436 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 131 transitions, 1070 flow [2024-06-27 19:59:29,436 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) [2024-06-27 19:59:29,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:29,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:29,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 19:59:29,436 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)] === [2024-06-27 19:59:29,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:29,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1264882802, now seen corresponding path program 11 times [2024-06-27 19:59:29,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:29,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445801394] [2024-06-27 19:59:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:29,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:30,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:30,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445801394] [2024-06-27 19:59:30,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445801394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:30,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:30,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:30,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565106967] [2024-06-27 19:59:30,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:30,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:30,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:30,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:30,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:30,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:30,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 131 transitions, 1070 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) [2024-06-27 19:59:30,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:30,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:30,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:30,365 INFO L124 PetriNetUnfolderBase]: 320/602 cut-off events. [2024-06-27 19:59:30,365 INFO L125 PetriNetUnfolderBase]: For 29763/29763 co-relation queries the response was YES. [2024-06-27 19:59:30,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3167 conditions, 602 events. 320/602 cut-off events. For 29763/29763 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2775 event pairs, 40 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 3085. Up to 546 conditions per place. [2024-06-27 19:59:30,368 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 113 selfloop transitions, 27 changer transitions 0/142 dead transitions. [2024-06-27 19:59:30,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 142 transitions, 1374 flow [2024-06-27 19:59:30,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:30,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:30,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 19:59:30,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-27 19:59:30,369 INFO L175 Difference]: Start difference. First operand has 174 places, 131 transitions, 1070 flow. Second operand 10 states and 107 transitions. [2024-06-27 19:59:30,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 142 transitions, 1374 flow [2024-06-27 19:59:30,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 142 transitions, 1212 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:30,427 INFO L231 Difference]: Finished difference. Result has 176 places, 131 transitions, 966 flow [2024-06-27 19:59:30,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=966, PETRI_PLACES=176, PETRI_TRANSITIONS=131} [2024-06-27 19:59:30,427 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2024-06-27 19:59:30,427 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 131 transitions, 966 flow [2024-06-27 19:59:30,427 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) [2024-06-27 19:59:30,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:30,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:30,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 19:59:30,427 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)] === [2024-06-27 19:59:30,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:30,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1268906491, now seen corresponding path program 1 times [2024-06-27 19:59:30,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:30,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766599889] [2024-06-27 19:59:30,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:30,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:31,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:31,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766599889] [2024-06-27 19:59:31,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766599889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:31,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:31,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:31,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199445839] [2024-06-27 19:59:31,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:31,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:31,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:31,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:31,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:31,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:31,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 131 transitions, 966 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) [2024-06-27 19:59:31,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:31,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:31,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:31,754 INFO L124 PetriNetUnfolderBase]: 361/689 cut-off events. [2024-06-27 19:59:31,754 INFO L125 PetriNetUnfolderBase]: For 62406/62406 co-relation queries the response was YES. [2024-06-27 19:59:31,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4120 conditions, 689 events. 361/689 cut-off events. For 62406/62406 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3280 event pairs, 49 based on Foata normal form. 8/695 useless extension candidates. Maximal degree in co-relation 4037. Up to 438 conditions per place. [2024-06-27 19:59:31,759 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 126 selfloop transitions, 21 changer transitions 16/165 dead transitions. [2024-06-27 19:59:31,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 165 transitions, 1604 flow [2024-06-27 19:59:31,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-27 19:59:31,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-27 19:59:31,760 INFO L175 Difference]: Start difference. First operand has 176 places, 131 transitions, 966 flow. Second operand 12 states and 143 transitions. [2024-06-27 19:59:31,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 165 transitions, 1604 flow [2024-06-27 19:59:31,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 165 transitions, 1497 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:31,847 INFO L231 Difference]: Finished difference. Result has 178 places, 127 transitions, 884 flow [2024-06-27 19:59:31,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=884, PETRI_PLACES=178, PETRI_TRANSITIONS=127} [2024-06-27 19:59:31,847 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2024-06-27 19:59:31,847 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 127 transitions, 884 flow [2024-06-27 19:59:31,847 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) [2024-06-27 19:59:31,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:31,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:31,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 19:59:31,848 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)] === [2024-06-27 19:59:31,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:31,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1327118911, now seen corresponding path program 2 times [2024-06-27 19:59:31,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:31,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732073102] [2024-06-27 19:59:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:31,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:32,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:32,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732073102] [2024-06-27 19:59:32,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732073102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:32,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:32,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:32,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727531623] [2024-06-27 19:59:32,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:32,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:32,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:32,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:32,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:32,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:32,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 127 transitions, 884 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) [2024-06-27 19:59:32,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:32,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:32,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:33,136 INFO L124 PetriNetUnfolderBase]: 345/659 cut-off events. [2024-06-27 19:59:33,136 INFO L125 PetriNetUnfolderBase]: For 69130/69130 co-relation queries the response was YES. [2024-06-27 19:59:33,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4070 conditions, 659 events. 345/659 cut-off events. For 69130/69130 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3122 event pairs, 59 based on Foata normal form. 10/667 useless extension candidates. Maximal degree in co-relation 3986. Up to 543 conditions per place. [2024-06-27 19:59:33,140 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 118 selfloop transitions, 21 changer transitions 11/152 dead transitions. [2024-06-27 19:59:33,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 152 transitions, 1312 flow [2024-06-27 19:59:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 19:59:33,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:59:33,141 INFO L175 Difference]: Start difference. First operand has 178 places, 127 transitions, 884 flow. Second operand 12 states and 135 transitions. [2024-06-27 19:59:33,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 152 transitions, 1312 flow [2024-06-27 19:59:33,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 152 transitions, 1273 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:59:33,234 INFO L231 Difference]: Finished difference. Result has 173 places, 124 transitions, 872 flow [2024-06-27 19:59:33,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=872, PETRI_PLACES=173, PETRI_TRANSITIONS=124} [2024-06-27 19:59:33,234 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2024-06-27 19:59:33,234 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 124 transitions, 872 flow [2024-06-27 19:59:33,234 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) [2024-06-27 19:59:33,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:33,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:33,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 19:59:33,235 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)] === [2024-06-27 19:59:33,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:33,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1327114261, now seen corresponding path program 3 times [2024-06-27 19:59:33,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:33,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617709498] [2024-06-27 19:59:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:33,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:34,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:34,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617709498] [2024-06-27 19:59:34,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617709498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:34,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:34,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:34,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825055301] [2024-06-27 19:59:34,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:34,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:34,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:34,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:34,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:34,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:34,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 124 transitions, 872 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) [2024-06-27 19:59:34,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:34,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:34,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:34,488 INFO L124 PetriNetUnfolderBase]: 337/647 cut-off events. [2024-06-27 19:59:34,488 INFO L125 PetriNetUnfolderBase]: For 58432/58432 co-relation queries the response was YES. [2024-06-27 19:59:34,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3909 conditions, 647 events. 337/647 cut-off events. For 58432/58432 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3062 event pairs, 55 based on Foata normal form. 8/653 useless extension candidates. Maximal degree in co-relation 3828. Up to 541 conditions per place. [2024-06-27 19:59:34,493 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 117 selfloop transitions, 19 changer transitions 11/149 dead transitions. [2024-06-27 19:59:34,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 149 transitions, 1257 flow [2024-06-27 19:59:34,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 19:59:34,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 19:59:34,494 INFO L175 Difference]: Start difference. First operand has 173 places, 124 transitions, 872 flow. Second operand 12 states and 132 transitions. [2024-06-27 19:59:34,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 149 transitions, 1257 flow [2024-06-27 19:59:34,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 149 transitions, 1211 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:59:34,585 INFO L231 Difference]: Finished difference. Result has 172 places, 122 transitions, 855 flow [2024-06-27 19:59:34,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=855, PETRI_PLACES=172, PETRI_TRANSITIONS=122} [2024-06-27 19:59:34,585 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 143 predicate places. [2024-06-27 19:59:34,585 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 122 transitions, 855 flow [2024-06-27 19:59:34,585 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) [2024-06-27 19:59:34,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:34,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:34,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 19:59:34,586 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)] === [2024-06-27 19:59:34,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:34,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1326998941, now seen corresponding path program 4 times [2024-06-27 19:59:34,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:34,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131617296] [2024-06-27 19:59:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:34,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:35,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:35,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131617296] [2024-06-27 19:59:35,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131617296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:35,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:35,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:35,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451106248] [2024-06-27 19:59:35,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:35,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:35,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:35,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:35,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:35,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:35,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 122 transitions, 855 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) [2024-06-27 19:59:35,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:35,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:35,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:35,889 INFO L124 PetriNetUnfolderBase]: 330/634 cut-off events. [2024-06-27 19:59:35,889 INFO L125 PetriNetUnfolderBase]: For 56854/56854 co-relation queries the response was YES. [2024-06-27 19:59:35,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3847 conditions, 634 events. 330/634 cut-off events. For 56854/56854 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2990 event pairs, 47 based on Foata normal form. 8/640 useless extension candidates. Maximal degree in co-relation 3766. Up to 438 conditions per place. [2024-06-27 19:59:35,894 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 118 selfloop transitions, 15 changer transitions 17/152 dead transitions. [2024-06-27 19:59:35,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 152 transitions, 1451 flow [2024-06-27 19:59:35,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:35,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 19:59:35,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38055555555555554 [2024-06-27 19:59:35,895 INFO L175 Difference]: Start difference. First operand has 172 places, 122 transitions, 855 flow. Second operand 12 states and 137 transitions. [2024-06-27 19:59:35,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 152 transitions, 1451 flow [2024-06-27 19:59:35,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 152 transitions, 1407 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:35,973 INFO L231 Difference]: Finished difference. Result has 170 places, 116 transitions, 806 flow [2024-06-27 19:59:35,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=806, PETRI_PLACES=170, PETRI_TRANSITIONS=116} [2024-06-27 19:59:35,973 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 141 predicate places. [2024-06-27 19:59:35,973 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 116 transitions, 806 flow [2024-06-27 19:59:35,974 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) [2024-06-27 19:59:35,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:35,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:35,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 19:59:35,974 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)] === [2024-06-27 19:59:35,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:35,974 INFO L85 PathProgramCache]: Analyzing trace with hash -280402275, now seen corresponding path program 5 times [2024-06-27 19:59:35,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:35,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78950306] [2024-06-27 19:59:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:35,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:36,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:36,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78950306] [2024-06-27 19:59:36,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78950306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:36,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:36,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:36,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047755183] [2024-06-27 19:59:36,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:36,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:36,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:36,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:36,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:37,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:37,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 116 transitions, 806 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) [2024-06-27 19:59:37,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:37,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:37,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:37,351 INFO L124 PetriNetUnfolderBase]: 310/597 cut-off events. [2024-06-27 19:59:37,351 INFO L125 PetriNetUnfolderBase]: For 56650/56650 co-relation queries the response was YES. [2024-06-27 19:59:37,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3545 conditions, 597 events. 310/597 cut-off events. For 56650/56650 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2780 event pairs, 56 based on Foata normal form. 10/605 useless extension candidates. Maximal degree in co-relation 3465. Up to 496 conditions per place. [2024-06-27 19:59:37,354 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 108 selfloop transitions, 13 changer transitions 14/137 dead transitions. [2024-06-27 19:59:37,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 137 transitions, 1194 flow [2024-06-27 19:59:37,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:37,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 19:59:37,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-27 19:59:37,356 INFO L175 Difference]: Start difference. First operand has 170 places, 116 transitions, 806 flow. Second operand 12 states and 125 transitions. [2024-06-27 19:59:37,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 137 transitions, 1194 flow [2024-06-27 19:59:37,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 137 transitions, 1152 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 19:59:37,420 INFO L231 Difference]: Finished difference. Result has 163 places, 110 transitions, 756 flow [2024-06-27 19:59:37,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=756, PETRI_PLACES=163, PETRI_TRANSITIONS=110} [2024-06-27 19:59:37,420 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-06-27 19:59:37,421 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 110 transitions, 756 flow [2024-06-27 19:59:37,421 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) [2024-06-27 19:59:37,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:37,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:37,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 19:59:37,421 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)] === [2024-06-27 19:59:37,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:37,421 INFO L85 PathProgramCache]: Analyzing trace with hash -280406925, now seen corresponding path program 6 times [2024-06-27 19:59:37,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:37,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998982581] [2024-06-27 19:59:37,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:37,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:38,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:38,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998982581] [2024-06-27 19:59:38,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998982581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:38,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:38,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:38,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99079914] [2024-06-27 19:59:38,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:38,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:38,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:38,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:38,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:38,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:38,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 110 transitions, 756 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) [2024-06-27 19:59:38,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:38,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:38,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:38,637 INFO L124 PetriNetUnfolderBase]: 294/573 cut-off events. [2024-06-27 19:59:38,637 INFO L125 PetriNetUnfolderBase]: For 47089/47089 co-relation queries the response was YES. [2024-06-27 19:59:38,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3304 conditions, 573 events. 294/573 cut-off events. For 47089/47089 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2667 event pairs, 52 based on Foata normal form. 8/579 useless extension candidates. Maximal degree in co-relation 3227. Up to 494 conditions per place. [2024-06-27 19:59:38,639 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 107 selfloop transitions, 9 changer transitions 12/130 dead transitions. [2024-06-27 19:59:38,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 130 transitions, 1091 flow [2024-06-27 19:59:38,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:38,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:59:38,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-27 19:59:38,640 INFO L175 Difference]: Start difference. First operand has 163 places, 110 transitions, 756 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:59:38,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 130 transitions, 1091 flow [2024-06-27 19:59:38,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 130 transitions, 1055 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 19:59:38,699 INFO L231 Difference]: Finished difference. Result has 159 places, 107 transitions, 723 flow [2024-06-27 19:59:38,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=723, PETRI_PLACES=159, PETRI_TRANSITIONS=107} [2024-06-27 19:59:38,699 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-27 19:59:38,699 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 107 transitions, 723 flow [2024-06-27 19:59:38,699 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) [2024-06-27 19:59:38,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:38,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:38,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 19:59:38,699 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)] === [2024-06-27 19:59:38,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1936934983, now seen corresponding path program 7 times [2024-06-27 19:59:38,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:38,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171960181] [2024-06-27 19:59:38,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:38,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:39,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:39,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171960181] [2024-06-27 19:59:39,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171960181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:39,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:39,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:39,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958191719] [2024-06-27 19:59:39,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:39,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:39,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:39,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:39,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:39,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:39,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 107 transitions, 723 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) [2024-06-27 19:59:39,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:39,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:39,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:39,798 INFO L124 PetriNetUnfolderBase]: 264/511 cut-off events. [2024-06-27 19:59:39,798 INFO L125 PetriNetUnfolderBase]: For 31615/31615 co-relation queries the response was YES. [2024-06-27 19:59:39,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 511 events. 264/511 cut-off events. For 31615/31615 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2279 event pairs, 34 based on Foata normal form. 8/517 useless extension candidates. Maximal degree in co-relation 2467. Up to 438 conditions per place. [2024-06-27 19:59:39,801 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 99 selfloop transitions, 5 changer transitions 20/126 dead transitions. [2024-06-27 19:59:39,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 126 transitions, 1045 flow [2024-06-27 19:59:39,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 19:59:39,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-27 19:59:39,801 INFO L175 Difference]: Start difference. First operand has 159 places, 107 transitions, 723 flow. Second operand 11 states and 113 transitions. [2024-06-27 19:59:39,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 126 transitions, 1045 flow [2024-06-27 19:59:39,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 126 transitions, 1019 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:39,844 INFO L231 Difference]: Finished difference. Result has 155 places, 101 transitions, 677 flow [2024-06-27 19:59:39,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=677, PETRI_PLACES=155, PETRI_TRANSITIONS=101} [2024-06-27 19:59:39,844 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-06-27 19:59:39,844 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 101 transitions, 677 flow [2024-06-27 19:59:39,844 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) [2024-06-27 19:59:39,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:39,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:39,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 19:59:39,844 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)] === [2024-06-27 19:59:39,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:39,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1479113017, now seen corresponding path program 8 times [2024-06-27 19:59:39,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:39,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313837837] [2024-06-27 19:59:39,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:39,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:40,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:40,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:40,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313837837] [2024-06-27 19:59:40,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313837837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:40,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:40,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:40,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100038036] [2024-06-27 19:59:40,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:40,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:40,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:40,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:40,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:40,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:40,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 101 transitions, 677 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) [2024-06-27 19:59:40,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:40,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:40,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:40,980 INFO L124 PetriNetUnfolderBase]: 280/542 cut-off events. [2024-06-27 19:59:40,980 INFO L125 PetriNetUnfolderBase]: For 45740/45740 co-relation queries the response was YES. [2024-06-27 19:59:40,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3295 conditions, 542 events. 280/542 cut-off events. For 45740/45740 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2472 event pairs, 47 based on Foata normal form. 8/548 useless extension candidates. Maximal degree in co-relation 3221. Up to 268 conditions per place. [2024-06-27 19:59:40,983 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 83 selfloop transitions, 32 changer transitions 10/127 dead transitions. [2024-06-27 19:59:40,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 127 transitions, 1191 flow [2024-06-27 19:59:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:59:40,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 19:59:40,984 INFO L175 Difference]: Start difference. First operand has 155 places, 101 transitions, 677 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:59:40,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 127 transitions, 1191 flow [2024-06-27 19:59:41,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 127 transitions, 1134 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:41,032 INFO L231 Difference]: Finished difference. Result has 143 places, 98 transitions, 694 flow [2024-06-27 19:59:41,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=694, PETRI_PLACES=143, PETRI_TRANSITIONS=98} [2024-06-27 19:59:41,032 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2024-06-27 19:59:41,032 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 98 transitions, 694 flow [2024-06-27 19:59:41,032 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) [2024-06-27 19:59:41,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:41,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:41,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 19:59:41,032 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)] === [2024-06-27 19:59:41,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:41,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1479232987, now seen corresponding path program 9 times [2024-06-27 19:59:41,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:41,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751269210] [2024-06-27 19:59:41,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:41,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:41,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:41,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751269210] [2024-06-27 19:59:41,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751269210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:41,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:41,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:41,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490696416] [2024-06-27 19:59:41,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:41,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:41,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:41,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:41,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:41,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:41,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 98 transitions, 694 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) [2024-06-27 19:59:41,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:41,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:41,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:42,256 INFO L124 PetriNetUnfolderBase]: 274/532 cut-off events. [2024-06-27 19:59:42,256 INFO L125 PetriNetUnfolderBase]: For 42634/42634 co-relation queries the response was YES. [2024-06-27 19:59:42,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3220 conditions, 532 events. 274/532 cut-off events. For 42634/42634 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2403 event pairs, 57 based on Foata normal form. 10/540 useless extension candidates. Maximal degree in co-relation 3151. Up to 361 conditions per place. [2024-06-27 19:59:42,259 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 75 selfloop transitions, 31 changer transitions 11/119 dead transitions. [2024-06-27 19:59:42,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 119 transitions, 1030 flow [2024-06-27 19:59:42,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 19:59:42,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-27 19:59:42,259 INFO L175 Difference]: Start difference. First operand has 143 places, 98 transitions, 694 flow. Second operand 11 states and 131 transitions. [2024-06-27 19:59:42,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 119 transitions, 1030 flow [2024-06-27 19:59:42,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 119 transitions, 969 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:42,303 INFO L231 Difference]: Finished difference. Result has 140 places, 95 transitions, 680 flow [2024-06-27 19:59:42,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=680, PETRI_PLACES=140, PETRI_TRANSITIONS=95} [2024-06-27 19:59:42,304 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2024-06-27 19:59:42,304 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 95 transitions, 680 flow [2024-06-27 19:59:42,304 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) [2024-06-27 19:59:42,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:42,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:42,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 19:59:42,304 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)] === [2024-06-27 19:59:42,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:42,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1479228337, now seen corresponding path program 10 times [2024-06-27 19:59:42,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:42,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006992012] [2024-06-27 19:59:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:42,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:43,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:43,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006992012] [2024-06-27 19:59:43,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006992012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:43,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:43,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:43,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486237942] [2024-06-27 19:59:43,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:43,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:43,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:43,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:43,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:43,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:43,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 95 transitions, 680 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) [2024-06-27 19:59:43,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:43,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:43,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:43,481 INFO L124 PetriNetUnfolderBase]: 291/571 cut-off events. [2024-06-27 19:59:43,481 INFO L125 PetriNetUnfolderBase]: For 49103/49103 co-relation queries the response was YES. [2024-06-27 19:59:43,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3864 conditions, 571 events. 291/571 cut-off events. For 49103/49103 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2648 event pairs, 68 based on Foata normal form. 8/577 useless extension candidates. Maximal degree in co-relation 3797. Up to 365 conditions per place. [2024-06-27 19:59:43,484 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 85 selfloop transitions, 24 changer transitions 10/121 dead transitions. [2024-06-27 19:59:43,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 121 transitions, 1158 flow [2024-06-27 19:59:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-27 19:59:43,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-27 19:59:43,485 INFO L175 Difference]: Start difference. First operand has 140 places, 95 transitions, 680 flow. Second operand 12 states and 142 transitions. [2024-06-27 19:59:43,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 121 transitions, 1158 flow [2024-06-27 19:59:43,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 121 transitions, 1088 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:43,534 INFO L231 Difference]: Finished difference. Result has 139 places, 90 transitions, 634 flow [2024-06-27 19:59:43,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=634, PETRI_PLACES=139, PETRI_TRANSITIONS=90} [2024-06-27 19:59:43,534 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2024-06-27 19:59:43,534 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 90 transitions, 634 flow [2024-06-27 19:59:43,534 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) [2024-06-27 19:59:43,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:43,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:43,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 19:59:43,535 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)] === [2024-06-27 19:59:43,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:43,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1725808889, now seen corresponding path program 11 times [2024-06-27 19:59:43,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:43,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745424893] [2024-06-27 19:59:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:43,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:44,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:44,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745424893] [2024-06-27 19:59:44,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745424893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:44,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:44,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:44,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508980333] [2024-06-27 19:59:44,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:44,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:44,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:44,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:44,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:44,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 90 transitions, 634 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) [2024-06-27 19:59:44,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:44,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:44,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:44,638 INFO L124 PetriNetUnfolderBase]: 256/502 cut-off events. [2024-06-27 19:59:44,639 INFO L125 PetriNetUnfolderBase]: For 37990/37990 co-relation queries the response was YES. [2024-06-27 19:59:44,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3043 conditions, 502 events. 256/502 cut-off events. For 37990/37990 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2242 event pairs, 57 based on Foata normal form. 10/510 useless extension candidates. Maximal degree in co-relation 2977. Up to 352 conditions per place. [2024-06-27 19:59:44,643 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 72 selfloop transitions, 20 changer transitions 16/110 dead transitions. [2024-06-27 19:59:44,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 110 transitions, 950 flow [2024-06-27 19:59:44,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:44,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 19:59:44,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 19:59:44,653 INFO L175 Difference]: Start difference. First operand has 139 places, 90 transitions, 634 flow. Second operand 11 states and 126 transitions. [2024-06-27 19:59:44,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 110 transitions, 950 flow [2024-06-27 19:59:44,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 110 transitions, 888 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-27 19:59:44,714 INFO L231 Difference]: Finished difference. Result has 133 places, 84 transitions, 583 flow [2024-06-27 19:59:44,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=583, PETRI_PLACES=133, PETRI_TRANSITIONS=84} [2024-06-27 19:59:44,715 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 104 predicate places. [2024-06-27 19:59:44,715 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 84 transitions, 583 flow [2024-06-27 19:59:44,715 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) [2024-06-27 19:59:44,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:44,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:44,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 19:59:44,716 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)] === [2024-06-27 19:59:44,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:44,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1368739463, now seen corresponding path program 1 times [2024-06-27 19:59:44,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:44,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242485193] [2024-06-27 19:59:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:44,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:45,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:45,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242485193] [2024-06-27 19:59:45,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242485193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:45,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:45,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:45,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502032530] [2024-06-27 19:59:45,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:45,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:45,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:45,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:45,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:45,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:45,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 84 transitions, 583 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) [2024-06-27 19:59:45,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:45,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:45,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:45,777 INFO L124 PetriNetUnfolderBase]: 233/453 cut-off events. [2024-06-27 19:59:45,777 INFO L125 PetriNetUnfolderBase]: For 25221/25221 co-relation queries the response was YES. [2024-06-27 19:59:45,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2706 conditions, 453 events. 233/453 cut-off events. For 25221/25221 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1948 event pairs, 53 based on Foata normal form. 2/453 useless extension candidates. Maximal degree in co-relation 2643. Up to 368 conditions per place. [2024-06-27 19:59:45,780 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 78 selfloop transitions, 19 changer transitions 0/99 dead transitions. [2024-06-27 19:59:45,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 99 transitions, 815 flow [2024-06-27 19:59:45,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:59:45,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 19:59:45,781 INFO L175 Difference]: Start difference. First operand has 133 places, 84 transitions, 583 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:59:45,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 99 transitions, 815 flow [2024-06-27 19:59:45,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 99 transitions, 761 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 19:59:45,805 INFO L231 Difference]: Finished difference. Result has 123 places, 85 transitions, 581 flow [2024-06-27 19:59:45,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=581, PETRI_PLACES=123, PETRI_TRANSITIONS=85} [2024-06-27 19:59:45,806 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-27 19:59:45,806 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 85 transitions, 581 flow [2024-06-27 19:59:45,806 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) [2024-06-27 19:59:45,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:45,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:45,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 19:59:45,807 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)] === [2024-06-27 19:59:45,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:45,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1362064419, now seen corresponding path program 12 times [2024-06-27 19:59:45,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:45,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912108876] [2024-06-27 19:59:45,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:45,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:46,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:46,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912108876] [2024-06-27 19:59:46,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912108876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:46,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:46,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:46,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366354072] [2024-06-27 19:59:46,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:46,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:46,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:46,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:46,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:46,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:46,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 85 transitions, 581 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) [2024-06-27 19:59:46,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:46,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:46,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:46,908 INFO L124 PetriNetUnfolderBase]: 242/476 cut-off events. [2024-06-27 19:59:46,908 INFO L125 PetriNetUnfolderBase]: For 25866/25866 co-relation queries the response was YES. [2024-06-27 19:59:46,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2588 conditions, 476 events. 242/476 cut-off events. For 25866/25866 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2098 event pairs, 48 based on Foata normal form. 10/484 useless extension candidates. Maximal degree in co-relation 2529. Up to 332 conditions per place. [2024-06-27 19:59:46,910 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 70 selfloop transitions, 22 changer transitions 11/105 dead transitions. [2024-06-27 19:59:46,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 105 transitions, 879 flow [2024-06-27 19:59:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:46,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:59:46,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-27 19:59:46,910 INFO L175 Difference]: Start difference. First operand has 123 places, 85 transitions, 581 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:59:46,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 105 transitions, 879 flow [2024-06-27 19:59:46,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 105 transitions, 837 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:46,935 INFO L231 Difference]: Finished difference. Result has 126 places, 82 transitions, 568 flow [2024-06-27 19:59:46,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=568, PETRI_PLACES=126, PETRI_TRANSITIONS=82} [2024-06-27 19:59:46,935 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-27 19:59:46,936 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 82 transitions, 568 flow [2024-06-27 19:59:46,936 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) [2024-06-27 19:59:46,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:46,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:46,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 19:59:46,936 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)] === [2024-06-27 19:59:46,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:46,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1649930767, now seen corresponding path program 13 times [2024-06-27 19:59:46,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:46,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558705464] [2024-06-27 19:59:46,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:46,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:47,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:47,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558705464] [2024-06-27 19:59:47,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558705464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:47,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:47,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:47,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096816397] [2024-06-27 19:59:47,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:47,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:47,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:47,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:47,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:47,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:47,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 82 transitions, 568 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) [2024-06-27 19:59:47,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:47,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:47,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:47,994 INFO L124 PetriNetUnfolderBase]: 208/410 cut-off events. [2024-06-27 19:59:47,994 INFO L125 PetriNetUnfolderBase]: For 18066/18066 co-relation queries the response was YES. [2024-06-27 19:59:47,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1983 conditions, 410 events. 208/410 cut-off events. For 18066/18066 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1723 event pairs, 34 based on Foata normal form. 8/416 useless extension candidates. Maximal degree in co-relation 1923. Up to 276 conditions per place. [2024-06-27 19:59:47,996 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 67 selfloop transitions, 19 changer transitions 13/101 dead transitions. [2024-06-27 19:59:47,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 101 transitions, 832 flow [2024-06-27 19:59:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:47,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:59:47,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-27 19:59:47,997 INFO L175 Difference]: Start difference. First operand has 126 places, 82 transitions, 568 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:59:47,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 101 transitions, 832 flow [2024-06-27 19:59:48,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 101 transitions, 784 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:48,020 INFO L231 Difference]: Finished difference. Result has 124 places, 78 transitions, 537 flow [2024-06-27 19:59:48,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=537, PETRI_PLACES=124, PETRI_TRANSITIONS=78} [2024-06-27 19:59:48,020 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2024-06-27 19:59:48,020 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 78 transitions, 537 flow [2024-06-27 19:59:48,020 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) [2024-06-27 19:59:48,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:48,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:48,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 19:59:48,020 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)] === [2024-06-27 19:59:48,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:48,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1484920153, now seen corresponding path program 2 times [2024-06-27 19:59:48,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:48,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46547218] [2024-06-27 19:59:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:48,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:48,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:48,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46547218] [2024-06-27 19:59:48,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46547218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:48,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:48,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:48,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631036263] [2024-06-27 19:59:48,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:48,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:48,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:48,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:48,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 78 transitions, 537 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) [2024-06-27 19:59:48,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:48,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:48,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:49,205 INFO L124 PetriNetUnfolderBase]: 192/374 cut-off events. [2024-06-27 19:59:49,205 INFO L125 PetriNetUnfolderBase]: For 12416/12416 co-relation queries the response was YES. [2024-06-27 19:59:49,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1834 conditions, 374 events. 192/374 cut-off events. For 12416/12416 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1503 event pairs, 34 based on Foata normal form. 2/374 useless extension candidates. Maximal degree in co-relation 1775. Up to 334 conditions per place. [2024-06-27 19:59:49,207 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 77 selfloop transitions, 13 changer transitions 0/92 dead transitions. [2024-06-27 19:59:49,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 92 transitions, 755 flow [2024-06-27 19:59:49,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:49,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:49,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 19:59:49,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 19:59:49,208 INFO L175 Difference]: Start difference. First operand has 124 places, 78 transitions, 537 flow. Second operand 10 states and 105 transitions. [2024-06-27 19:59:49,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 92 transitions, 755 flow [2024-06-27 19:59:49,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 92 transitions, 703 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:49,225 INFO L231 Difference]: Finished difference. Result has 116 places, 79 transitions, 527 flow [2024-06-27 19:59:49,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=527, PETRI_PLACES=116, PETRI_TRANSITIONS=79} [2024-06-27 19:59:49,225 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-06-27 19:59:49,225 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 79 transitions, 527 flow [2024-06-27 19:59:49,226 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) [2024-06-27 19:59:49,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:49,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:49,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 19:59:49,226 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)] === [2024-06-27 19:59:49,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:49,226 INFO L85 PathProgramCache]: Analyzing trace with hash -416279657, now seen corresponding path program 14 times [2024-06-27 19:59:49,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:49,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407486611] [2024-06-27 19:59:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:49,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:49,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:49,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:49,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407486611] [2024-06-27 19:59:49,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407486611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:49,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:49,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:49,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009526256] [2024-06-27 19:59:49,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:49,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:49,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:49,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:49,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:50,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:50,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 79 transitions, 527 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) [2024-06-27 19:59:50,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:50,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:50,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:50,348 INFO L124 PetriNetUnfolderBase]: 208/410 cut-off events. [2024-06-27 19:59:50,348 INFO L125 PetriNetUnfolderBase]: For 16674/16674 co-relation queries the response was YES. [2024-06-27 19:59:50,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1935 conditions, 410 events. 208/410 cut-off events. For 16674/16674 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1694 event pairs, 28 based on Foata normal form. 10/418 useless extension candidates. Maximal degree in co-relation 1879. Up to 303 conditions per place. [2024-06-27 19:59:50,350 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 68 selfloop transitions, 19 changer transitions 11/100 dead transitions. [2024-06-27 19:59:50,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 100 transitions, 811 flow [2024-06-27 19:59:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 19:59:50,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-27 19:59:50,351 INFO L175 Difference]: Start difference. First operand has 116 places, 79 transitions, 527 flow. Second operand 11 states and 124 transitions. [2024-06-27 19:59:50,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 100 transitions, 811 flow [2024-06-27 19:59:50,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 100 transitions, 779 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:50,369 INFO L231 Difference]: Finished difference. Result has 119 places, 76 transitions, 521 flow [2024-06-27 19:59:50,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=521, PETRI_PLACES=119, PETRI_TRANSITIONS=76} [2024-06-27 19:59:50,369 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-27 19:59:50,369 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 76 transitions, 521 flow [2024-06-27 19:59:50,370 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) [2024-06-27 19:59:50,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:50,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:50,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 19:59:50,370 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)] === [2024-06-27 19:59:50,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:50,370 INFO L85 PathProgramCache]: Analyzing trace with hash -762931895, now seen corresponding path program 3 times [2024-06-27 19:59:50,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:50,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484195351] [2024-06-27 19:59:50,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:50,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:51,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:51,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484195351] [2024-06-27 19:59:51,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484195351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:51,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:51,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:51,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45321452] [2024-06-27 19:59:51,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:51,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:51,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:51,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:51,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:51,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:51,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 76 transitions, 521 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) [2024-06-27 19:59:51,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:51,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:51,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:51,425 INFO L124 PetriNetUnfolderBase]: 188/370 cut-off events. [2024-06-27 19:59:51,425 INFO L125 PetriNetUnfolderBase]: For 11208/11208 co-relation queries the response was YES. [2024-06-27 19:59:51,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1792 conditions, 370 events. 188/370 cut-off events. For 11208/11208 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1498 event pairs, 32 based on Foata normal form. 2/370 useless extension candidates. Maximal degree in co-relation 1735. Up to 328 conditions per place. [2024-06-27 19:59:51,427 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 74 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2024-06-27 19:59:51,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 91 transitions, 741 flow [2024-06-27 19:59:51,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 19:59:51,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-27 19:59:51,428 INFO L175 Difference]: Start difference. First operand has 119 places, 76 transitions, 521 flow. Second operand 10 states and 107 transitions. [2024-06-27 19:59:51,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 91 transitions, 741 flow [2024-06-27 19:59:51,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 91 transitions, 695 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:51,441 INFO L231 Difference]: Finished difference. Result has 116 places, 77 transitions, 523 flow [2024-06-27 19:59:51,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=523, PETRI_PLACES=116, PETRI_TRANSITIONS=77} [2024-06-27 19:59:51,442 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-06-27 19:59:51,442 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 77 transitions, 523 flow [2024-06-27 19:59:51,442 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) [2024-06-27 19:59:51,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:51,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:51,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 19:59:51,443 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)] === [2024-06-27 19:59:51,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:51,443 INFO L85 PathProgramCache]: Analyzing trace with hash -416284307, now seen corresponding path program 15 times [2024-06-27 19:59:51,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:51,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626507803] [2024-06-27 19:59:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:51,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:52,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:52,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626507803] [2024-06-27 19:59:52,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626507803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:52,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:52,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:52,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454206290] [2024-06-27 19:59:52,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:52,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:52,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:52,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:52,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:52,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:52,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 77 transitions, 523 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) [2024-06-27 19:59:52,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:52,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:52,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:52,666 INFO L124 PetriNetUnfolderBase]: 200/398 cut-off events. [2024-06-27 19:59:52,666 INFO L125 PetriNetUnfolderBase]: For 14934/14934 co-relation queries the response was YES. [2024-06-27 19:59:52,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 398 events. 200/398 cut-off events. For 14934/14934 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1648 event pairs, 38 based on Foata normal form. 8/404 useless extension candidates. Maximal degree in co-relation 1813. Up to 331 conditions per place. [2024-06-27 19:59:52,668 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 70 selfloop transitions, 9 changer transitions 13/94 dead transitions. [2024-06-27 19:59:52,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 94 transitions, 765 flow [2024-06-27 19:59:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:52,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:52,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:59:52,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-27 19:59:52,668 INFO L175 Difference]: Start difference. First operand has 116 places, 77 transitions, 523 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:59:52,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 94 transitions, 765 flow [2024-06-27 19:59:52,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 94 transitions, 727 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:52,685 INFO L231 Difference]: Finished difference. Result has 119 places, 73 transitions, 482 flow [2024-06-27 19:59:52,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=482, PETRI_PLACES=119, PETRI_TRANSITIONS=73} [2024-06-27 19:59:52,685 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-27 19:59:52,685 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 73 transitions, 482 flow [2024-06-27 19:59:52,686 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) [2024-06-27 19:59:52,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:52,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:52,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 19:59:52,686 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)] === [2024-06-27 19:59:52,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:52,686 INFO L85 PathProgramCache]: Analyzing trace with hash -379277667, now seen corresponding path program 4 times [2024-06-27 19:59:52,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:52,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589473917] [2024-06-27 19:59:52,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:52,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:53,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:53,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589473917] [2024-06-27 19:59:53,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589473917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:53,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:53,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:53,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226119004] [2024-06-27 19:59:53,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:53,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:53,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:53,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:53,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:53,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:53,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 73 transitions, 482 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) [2024-06-27 19:59:53,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:53,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:53,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:53,647 INFO L124 PetriNetUnfolderBase]: 184/362 cut-off events. [2024-06-27 19:59:53,648 INFO L125 PetriNetUnfolderBase]: For 11194/11194 co-relation queries the response was YES. [2024-06-27 19:59:53,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 362 events. 184/362 cut-off events. For 11194/11194 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1459 event pairs, 38 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 1673. Up to 304 conditions per place. [2024-06-27 19:59:53,649 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 69 selfloop transitions, 17 changer transitions 0/88 dead transitions. [2024-06-27 19:59:53,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 88 transitions, 698 flow [2024-06-27 19:59:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:59:53,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 19:59:53,650 INFO L175 Difference]: Start difference. First operand has 119 places, 73 transitions, 482 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:59:53,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 88 transitions, 698 flow [2024-06-27 19:59:53,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 88 transitions, 670 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:53,663 INFO L231 Difference]: Finished difference. Result has 112 places, 74 transitions, 508 flow [2024-06-27 19:59:53,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=508, PETRI_PLACES=112, PETRI_TRANSITIONS=74} [2024-06-27 19:59:53,664 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-27 19:59:53,664 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 74 transitions, 508 flow [2024-06-27 19:59:53,664 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) [2024-06-27 19:59:53,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:53,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:53,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 19:59:53,664 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:53,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:53,665 INFO L85 PathProgramCache]: Analyzing trace with hash -385952711, now seen corresponding path program 16 times [2024-06-27 19:59:53,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:53,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480939811] [2024-06-27 19:59:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:53,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:54,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:54,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480939811] [2024-06-27 19:59:54,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480939811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:54,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:54,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:54,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203235456] [2024-06-27 19:59:54,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:54,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:54,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:54,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:54,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:54,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 74 transitions, 508 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) [2024-06-27 19:59:54,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:54,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:54,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:54,879 INFO L124 PetriNetUnfolderBase]: 200/398 cut-off events. [2024-06-27 19:59:54,879 INFO L125 PetriNetUnfolderBase]: For 15063/15063 co-relation queries the response was YES. [2024-06-27 19:59:54,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 398 events. 200/398 cut-off events. For 15063/15063 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1651 event pairs, 44 based on Foata normal form. 10/406 useless extension candidates. Maximal degree in co-relation 1809. Up to 303 conditions per place. [2024-06-27 19:59:54,881 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 64 selfloop transitions, 16 changer transitions 11/93 dead transitions. [2024-06-27 19:59:54,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 93 transitions, 768 flow [2024-06-27 19:59:54,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:54,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 19:59:54,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-27 19:59:54,881 INFO L175 Difference]: Start difference. First operand has 112 places, 74 transitions, 508 flow. Second operand 11 states and 124 transitions. [2024-06-27 19:59:54,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 93 transitions, 768 flow [2024-06-27 19:59:54,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 93 transitions, 724 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:54,898 INFO L231 Difference]: Finished difference. Result has 115 places, 71 transitions, 484 flow [2024-06-27 19:59:54,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=484, PETRI_PLACES=115, PETRI_TRANSITIONS=71} [2024-06-27 19:59:54,898 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 86 predicate places. [2024-06-27 19:59:54,898 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 71 transitions, 484 flow [2024-06-27 19:59:54,898 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) [2024-06-27 19:59:54,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:54,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:54,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 19:59:54,898 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:54,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:54,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1039979825, now seen corresponding path program 5 times [2024-06-27 19:59:54,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:54,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723894718] [2024-06-27 19:59:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:54,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:55,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:55,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723894718] [2024-06-27 19:59:55,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723894718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:55,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:55,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:55,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619628565] [2024-06-27 19:59:55,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:55,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:55,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:55,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:55,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:55,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:55,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 71 transitions, 484 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) [2024-06-27 19:59:55,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:55,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:55,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:55,970 INFO L124 PetriNetUnfolderBase]: 180/358 cut-off events. [2024-06-27 19:59:55,970 INFO L125 PetriNetUnfolderBase]: For 10226/10226 co-relation queries the response was YES. [2024-06-27 19:59:55,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 358 events. 180/358 cut-off events. For 10226/10226 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1451 event pairs, 28 based on Foata normal form. 2/358 useless extension candidates. Maximal degree in co-relation 1655. Up to 302 conditions per place. [2024-06-27 19:59:55,972 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 68 selfloop transitions, 16 changer transitions 0/86 dead transitions. [2024-06-27 19:59:55,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 86 transitions, 698 flow [2024-06-27 19:59:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:59:55,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-27 19:59:55,973 INFO L175 Difference]: Start difference. First operand has 115 places, 71 transitions, 484 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:59:55,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 86 transitions, 698 flow [2024-06-27 19:59:55,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 86 transitions, 658 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:55,988 INFO L231 Difference]: Finished difference. Result has 112 places, 72 transitions, 498 flow [2024-06-27 19:59:55,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=498, PETRI_PLACES=112, PETRI_TRANSITIONS=72} [2024-06-27 19:59:55,988 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-27 19:59:55,989 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 72 transitions, 498 flow [2024-06-27 19:59:55,989 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) [2024-06-27 19:59:55,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:55,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:55,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 19:59:55,989 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:55,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:55,989 INFO L85 PathProgramCache]: Analyzing trace with hash -752804195, now seen corresponding path program 6 times [2024-06-27 19:59:55,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:55,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146560252] [2024-06-27 19:59:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:55,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:56,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:56,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146560252] [2024-06-27 19:59:56,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146560252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:56,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:56,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:56,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094852667] [2024-06-27 19:59:56,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:56,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:56,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:56,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:56,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:56,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:56,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 72 transitions, 498 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) [2024-06-27 19:59:56,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:56,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:56,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:56,987 INFO L124 PetriNetUnfolderBase]: 177/353 cut-off events. [2024-06-27 19:59:56,987 INFO L125 PetriNetUnfolderBase]: For 8416/8416 co-relation queries the response was YES. [2024-06-27 19:59:56,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 353 events. 177/353 cut-off events. For 8416/8416 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1427 event pairs, 25 based on Foata normal form. 2/353 useless extension candidates. Maximal degree in co-relation 1551. Up to 311 conditions per place. [2024-06-27 19:59:56,988 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 71 selfloop transitions, 13 changer transitions 0/86 dead transitions. [2024-06-27 19:59:56,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 86 transitions, 696 flow [2024-06-27 19:59:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:56,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 19:59:56,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-27 19:59:56,989 INFO L175 Difference]: Start difference. First operand has 112 places, 72 transitions, 498 flow. Second operand 10 states and 104 transitions. [2024-06-27 19:59:56,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 86 transitions, 696 flow [2024-06-27 19:59:57,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 86 transitions, 650 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:57,001 INFO L231 Difference]: Finished difference. Result has 114 places, 72 transitions, 482 flow [2024-06-27 19:59:57,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=482, PETRI_PLACES=114, PETRI_TRANSITIONS=72} [2024-06-27 19:59:57,002 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2024-06-27 19:59:57,002 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 72 transitions, 482 flow [2024-06-27 19:59:57,002 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) [2024-06-27 19:59:57,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:57,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:57,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 19:59:57,002 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:57,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:57,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1048269349, now seen corresponding path program 17 times [2024-06-27 19:59:57,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:57,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581450122] [2024-06-27 19:59:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:57,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:57,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:57,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581450122] [2024-06-27 19:59:57,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581450122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:57,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:57,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:57,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855449020] [2024-06-27 19:59:57,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:57,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:57,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:57,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:57,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:57,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:57,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 72 transitions, 482 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) [2024-06-27 19:59:57,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:57,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:57,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:58,206 INFO L124 PetriNetUnfolderBase]: 193/389 cut-off events. [2024-06-27 19:59:58,207 INFO L125 PetriNetUnfolderBase]: For 14352/14352 co-relation queries the response was YES. [2024-06-27 19:59:58,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1724 conditions, 389 events. 193/389 cut-off events. For 14352/14352 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1628 event pairs, 39 based on Foata normal form. 10/397 useless extension candidates. Maximal degree in co-relation 1669. Up to 303 conditions per place. [2024-06-27 19:59:58,208 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 66 selfloop transitions, 13 changer transitions 11/92 dead transitions. [2024-06-27 19:59:58,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 92 transitions, 738 flow [2024-06-27 19:59:58,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:58,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:58,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 19:59:58,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 19:59:58,209 INFO L175 Difference]: Start difference. First operand has 114 places, 72 transitions, 482 flow. Second operand 11 states and 120 transitions. [2024-06-27 19:59:58,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 92 transitions, 738 flow [2024-06-27 19:59:58,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 92 transitions, 682 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:58,224 INFO L231 Difference]: Finished difference. Result has 116 places, 69 transitions, 440 flow [2024-06-27 19:59:58,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=440, PETRI_PLACES=116, PETRI_TRANSITIONS=69} [2024-06-27 19:59:58,224 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-06-27 19:59:58,224 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 69 transitions, 440 flow [2024-06-27 19:59:58,224 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) [2024-06-27 19:59:58,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:58,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:58,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 19:59:58,224 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:58,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:58,225 INFO L85 PathProgramCache]: Analyzing trace with hash -385957361, now seen corresponding path program 18 times [2024-06-27 19:59:58,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:58,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498053375] [2024-06-27 19:59:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:58,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:58,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:58,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498053375] [2024-06-27 19:59:58,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498053375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:58,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:58,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:58,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371244859] [2024-06-27 19:59:58,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:58,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:58,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:58,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:58,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:59,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 19:59:59,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 69 transitions, 440 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) [2024-06-27 19:59:59,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:59,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 19:59:59,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:59,240 INFO L124 PetriNetUnfolderBase]: 179/367 cut-off events. [2024-06-27 19:59:59,240 INFO L125 PetriNetUnfolderBase]: For 13356/13356 co-relation queries the response was YES. [2024-06-27 19:59:59,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 367 events. 179/367 cut-off events. For 13356/13356 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1521 event pairs, 35 based on Foata normal form. 8/373 useless extension candidates. Maximal degree in co-relation 1533. Up to 260 conditions per place. [2024-06-27 19:59:59,242 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 57 selfloop transitions, 16 changer transitions 13/88 dead transitions. [2024-06-27 19:59:59,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 88 transitions, 672 flow [2024-06-27 19:59:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 19:59:59,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 19:59:59,243 INFO L175 Difference]: Start difference. First operand has 116 places, 69 transitions, 440 flow. Second operand 11 states and 123 transitions. [2024-06-27 19:59:59,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 88 transitions, 672 flow [2024-06-27 19:59:59,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 88 transitions, 624 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 19:59:59,270 INFO L231 Difference]: Finished difference. Result has 113 places, 65 transitions, 410 flow [2024-06-27 19:59:59,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=410, PETRI_PLACES=113, PETRI_TRANSITIONS=65} [2024-06-27 19:59:59,270 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-27 19:59:59,270 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 65 transitions, 410 flow [2024-06-27 19:59:59,270 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) [2024-06-27 19:59:59,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:59,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:59,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 19:59:59,270 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:59,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:59,271 INFO L85 PathProgramCache]: Analyzing trace with hash -552191141, now seen corresponding path program 19 times [2024-06-27 19:59:59,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:59,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445696003] [2024-06-27 19:59:59,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:59,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:59,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:59,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:59,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445696003] [2024-06-27 19:59:59,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445696003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:59,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:59,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:59,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71877200] [2024-06-27 19:59:59,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:59,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:59,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:59,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:59,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:00,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:00:00,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 65 transitions, 410 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) [2024-06-27 20:00:00,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:00,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:00:00,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:00,301 INFO L124 PetriNetUnfolderBase]: 200/410 cut-off events. [2024-06-27 20:00:00,302 INFO L125 PetriNetUnfolderBase]: For 19706/19706 co-relation queries the response was YES. [2024-06-27 20:00:00,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2073 conditions, 410 events. 200/410 cut-off events. For 19706/19706 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1750 event pairs, 48 based on Foata normal form. 8/416 useless extension candidates. Maximal degree in co-relation 2019. Up to 235 conditions per place. [2024-06-27 20:00:00,303 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 62 selfloop transitions, 19 changer transitions 7/90 dead transitions. [2024-06-27 20:00:00,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 90 transitions, 758 flow [2024-06-27 20:00:00,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:00,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 20:00:00,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 20:00:00,304 INFO L175 Difference]: Start difference. First operand has 113 places, 65 transitions, 410 flow. Second operand 11 states and 129 transitions. [2024-06-27 20:00:00,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 90 transitions, 758 flow [2024-06-27 20:00:00,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 90 transitions, 700 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:00,322 INFO L231 Difference]: Finished difference. Result has 107 places, 63 transitions, 395 flow [2024-06-27 20:00:00,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=395, PETRI_PLACES=107, PETRI_TRANSITIONS=63} [2024-06-27 20:00:00,323 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-27 20:00:00,323 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 63 transitions, 395 flow [2024-06-27 20:00:00,323 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) [2024-06-27 20:00:00,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:00,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:00,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 20:00:00,323 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:00,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:00,323 INFO L85 PathProgramCache]: Analyzing trace with hash -556775111, now seen corresponding path program 20 times [2024-06-27 20:00:00,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:00,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383366309] [2024-06-27 20:00:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:00,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:00,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:00,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383366309] [2024-06-27 20:00:00,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383366309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:00,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:00,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:00,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061843705] [2024-06-27 20:00:00,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:00,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:00,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:00,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:01,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:01,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:00:01,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 63 transitions, 395 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) [2024-06-27 20:00:01,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:01,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:00:01,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:01,434 INFO L124 PetriNetUnfolderBase]: 209/433 cut-off events. [2024-06-27 20:00:01,434 INFO L125 PetriNetUnfolderBase]: For 20218/20218 co-relation queries the response was YES. [2024-06-27 20:00:01,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 433 events. 209/433 cut-off events. For 20218/20218 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1903 event pairs, 51 based on Foata normal form. 8/439 useless extension candidates. Maximal degree in co-relation 2215. Up to 163 conditions per place. [2024-06-27 20:00:01,436 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 55 selfloop transitions, 21 changer transitions 10/88 dead transitions. [2024-06-27 20:00:01,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 88 transitions, 713 flow [2024-06-27 20:00:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 20:00:01,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 20:00:01,437 INFO L175 Difference]: Start difference. First operand has 107 places, 63 transitions, 395 flow. Second operand 11 states and 132 transitions. [2024-06-27 20:00:01,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 88 transitions, 713 flow [2024-06-27 20:00:01,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 88 transitions, 669 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:01,451 INFO L231 Difference]: Finished difference. Result has 106 places, 60 transitions, 385 flow [2024-06-27 20:00:01,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=385, PETRI_PLACES=106, PETRI_TRANSITIONS=60} [2024-06-27 20:00:01,452 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-27 20:00:01,452 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 60 transitions, 385 flow [2024-06-27 20:00:01,452 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) [2024-06-27 20:00:01,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:01,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:01,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 20:00:01,452 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:01,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:01,453 INFO L85 PathProgramCache]: Analyzing trace with hash -552186491, now seen corresponding path program 21 times [2024-06-27 20:00:01,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:01,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255233610] [2024-06-27 20:00:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:01,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:02,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:02,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255233610] [2024-06-27 20:00:02,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255233610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:02,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:02,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:02,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8551800] [2024-06-27 20:00:02,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:02,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:02,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:02,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:02,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:02,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:00:02,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 60 transitions, 385 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) [2024-06-27 20:00:02,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:02,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:00:02,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:02,673 INFO L124 PetriNetUnfolderBase]: 174/364 cut-off events. [2024-06-27 20:00:02,673 INFO L125 PetriNetUnfolderBase]: For 14666/14666 co-relation queries the response was YES. [2024-06-27 20:00:02,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1707 conditions, 364 events. 174/364 cut-off events. For 14666/14666 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1504 event pairs, 52 based on Foata normal form. 10/372 useless extension candidates. Maximal degree in co-relation 1657. Up to 272 conditions per place. [2024-06-27 20:00:02,675 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 50 selfloop transitions, 11 changer transitions 15/78 dead transitions. [2024-06-27 20:00:02,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 78 transitions, 599 flow [2024-06-27 20:00:02,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 20:00:02,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-27 20:00:02,676 INFO L175 Difference]: Start difference. First operand has 106 places, 60 transitions, 385 flow. Second operand 11 states and 119 transitions. [2024-06-27 20:00:02,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 78 transitions, 599 flow [2024-06-27 20:00:02,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 78 transitions, 556 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:02,689 INFO L231 Difference]: Finished difference. Result has 103 places, 55 transitions, 336 flow [2024-06-27 20:00:02,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=336, PETRI_PLACES=103, PETRI_TRANSITIONS=55} [2024-06-27 20:00:02,689 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2024-06-27 20:00:02,690 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 55 transitions, 336 flow [2024-06-27 20:00:02,690 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) [2024-06-27 20:00:02,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:02,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:02,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 20:00:02,690 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:02,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:02,691 INFO L85 PathProgramCache]: Analyzing trace with hash -556655141, now seen corresponding path program 22 times [2024-06-27 20:00:02,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:02,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423276190] [2024-06-27 20:00:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:02,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:03,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423276190] [2024-06-27 20:00:03,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423276190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:03,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:03,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:03,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910198226] [2024-06-27 20:00:03,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:03,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:03,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:03,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:03,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:03,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:00:03,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 55 transitions, 336 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) [2024-06-27 20:00:03,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:03,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:00:03,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:03,803 INFO L124 PetriNetUnfolderBase]: 157/333 cut-off events. [2024-06-27 20:00:03,804 INFO L125 PetriNetUnfolderBase]: For 11872/11872 co-relation queries the response was YES. [2024-06-27 20:00:03,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 333 events. 157/333 cut-off events. For 11872/11872 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1339 event pairs, 47 based on Foata normal form. 10/341 useless extension candidates. Maximal degree in co-relation 1421. Up to 219 conditions per place. [2024-06-27 20:00:03,805 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 45 selfloop transitions, 17 changer transitions 11/75 dead transitions. [2024-06-27 20:00:03,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 75 transitions, 548 flow [2024-06-27 20:00:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:03,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:00:03,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 20:00:03,806 INFO L175 Difference]: Start difference. First operand has 103 places, 55 transitions, 336 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:00:03,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 75 transitions, 548 flow [2024-06-27 20:00:03,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 75 transitions, 502 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:03,815 INFO L231 Difference]: Finished difference. Result has 96 places, 52 transitions, 318 flow [2024-06-27 20:00:03,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=318, PETRI_PLACES=96, PETRI_TRANSITIONS=52} [2024-06-27 20:00:03,816 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 67 predicate places. [2024-06-27 20:00:03,816 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 52 transitions, 318 flow [2024-06-27 20:00:03,816 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) [2024-06-27 20:00:03,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:03,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:03,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 20:00:03,816 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:03,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash -818808889, now seen corresponding path program 23 times [2024-06-27 20:00:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:03,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299233766] [2024-06-27 20:00:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:03,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:04,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:04,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299233766] [2024-06-27 20:00:04,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299233766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:04,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:04,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:04,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874381081] [2024-06-27 20:00:04,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:04,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:04,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:04,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:00:04,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 52 transitions, 318 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) [2024-06-27 20:00:04,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:04,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:00:04,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:04,880 INFO L124 PetriNetUnfolderBase]: 123/267 cut-off events. [2024-06-27 20:00:04,880 INFO L125 PetriNetUnfolderBase]: For 5806/5806 co-relation queries the response was YES. [2024-06-27 20:00:04,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 267 events. 123/267 cut-off events. For 5806/5806 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 996 event pairs, 25 based on Foata normal form. 8/273 useless extension candidates. Maximal degree in co-relation 931. Up to 163 conditions per place. [2024-06-27 20:00:04,881 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 41 selfloop transitions, 13 changer transitions 14/70 dead transitions. [2024-06-27 20:00:04,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 70 transitions, 492 flow [2024-06-27 20:00:04,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:00:04,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:00:04,882 INFO L175 Difference]: Start difference. First operand has 96 places, 52 transitions, 318 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:00:04,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 70 transitions, 492 flow [2024-06-27 20:00:04,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 70 transitions, 454 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:04,887 INFO L231 Difference]: Finished difference. Result has 95 places, 46 transitions, 273 flow [2024-06-27 20:00:04,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=273, PETRI_PLACES=95, PETRI_TRANSITIONS=46} [2024-06-27 20:00:04,887 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-27 20:00:04,887 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 46 transitions, 273 flow [2024-06-27 20:00:04,887 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) [2024-06-27 20:00:04,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:04,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:04,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 20:00:04,888 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:04,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:04,888 INFO L85 PathProgramCache]: Analyzing trace with hash -184682040, now seen corresponding path program 1 times [2024-06-27 20:00:04,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:04,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146204263] [2024-06-27 20:00:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:04,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:06,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:06,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146204263] [2024-06-27 20:00:06,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146204263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:06,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:06,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:06,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232771149] [2024-06-27 20:00:06,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:06,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:06,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:06,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:06,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:06,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:00:06,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 46 transitions, 273 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:06,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:06,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:00:06,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:06,450 INFO L124 PetriNetUnfolderBase]: 110/240 cut-off events. [2024-06-27 20:00:06,450 INFO L125 PetriNetUnfolderBase]: For 5018/5018 co-relation queries the response was YES. [2024-06-27 20:00:06,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 240 events. 110/240 cut-off events. For 5018/5018 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 858 event pairs, 29 based on Foata normal form. 6/244 useless extension candidates. Maximal degree in co-relation 839. Up to 146 conditions per place. [2024-06-27 20:00:06,451 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 33 selfloop transitions, 7 changer transitions 22/64 dead transitions. [2024-06-27 20:00:06,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 64 transitions, 441 flow [2024-06-27 20:00:06,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:06,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 20:00:06,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-27 20:00:06,452 INFO L175 Difference]: Start difference. First operand has 95 places, 46 transitions, 273 flow. Second operand 11 states and 114 transitions. [2024-06-27 20:00:06,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 64 transitions, 441 flow [2024-06-27 20:00:06,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 64 transitions, 385 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-27 20:00:06,456 INFO L231 Difference]: Finished difference. Result has 85 places, 39 transitions, 207 flow [2024-06-27 20:00:06,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=207, PETRI_PLACES=85, PETRI_TRANSITIONS=39} [2024-06-27 20:00:06,456 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-27 20:00:06,456 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 39 transitions, 207 flow [2024-06-27 20:00:06,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:06,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:06,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:06,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 20:00:06,457 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:06,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:06,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1212114292, now seen corresponding path program 2 times [2024-06-27 20:00:06,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:06,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708987567] [2024-06-27 20:00:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:06,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:07,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:07,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708987567] [2024-06-27 20:00:07,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708987567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:07,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:07,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:07,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786644045] [2024-06-27 20:00:07,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:07,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:07,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:07,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:07,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:07,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:00:07,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 39 transitions, 207 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:07,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:07,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:00:07,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:07,912 INFO L124 PetriNetUnfolderBase]: 96/209 cut-off events. [2024-06-27 20:00:07,912 INFO L125 PetriNetUnfolderBase]: For 3866/3866 co-relation queries the response was YES. [2024-06-27 20:00:07,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 209 events. 96/209 cut-off events. For 3866/3866 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 710 event pairs, 23 based on Foata normal form. 6/214 useless extension candidates. Maximal degree in co-relation 676. Up to 131 conditions per place. [2024-06-27 20:00:07,913 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 33 selfloop transitions, 9 changer transitions 15/59 dead transitions. [2024-06-27 20:00:07,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 59 transitions, 376 flow [2024-06-27 20:00:07,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:07,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:07,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-27 20:00:07,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-27 20:00:07,916 INFO L175 Difference]: Start difference. First operand has 85 places, 39 transitions, 207 flow. Second operand 11 states and 112 transitions. [2024-06-27 20:00:07,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 59 transitions, 376 flow [2024-06-27 20:00:07,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 59 transitions, 342 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-27 20:00:07,919 INFO L231 Difference]: Finished difference. Result has 73 places, 38 transitions, 207 flow [2024-06-27 20:00:07,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=207, PETRI_PLACES=73, PETRI_TRANSITIONS=38} [2024-06-27 20:00:07,919 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-27 20:00:07,920 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 38 transitions, 207 flow [2024-06-27 20:00:07,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:07,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:07,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:07,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 20:00:07,920 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:07,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1862092344, now seen corresponding path program 3 times [2024-06-27 20:00:07,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:07,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657347100] [2024-06-27 20:00:07,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:07,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:08,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:08,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657347100] [2024-06-27 20:00:08,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657347100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:08,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:08,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:08,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726588189] [2024-06-27 20:00:08,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:08,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:08,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:08,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:08,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:08,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:00:08,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 38 transitions, 207 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:08,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:08,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:00:08,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:09,260 INFO L124 PetriNetUnfolderBase]: 83/182 cut-off events. [2024-06-27 20:00:09,260 INFO L125 PetriNetUnfolderBase]: For 2276/2276 co-relation queries the response was YES. [2024-06-27 20:00:09,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 182 events. 83/182 cut-off events. For 2276/2276 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 575 event pairs, 19 based on Foata normal form. 6/187 useless extension candidates. Maximal degree in co-relation 584. Up to 116 conditions per place. [2024-06-27 20:00:09,261 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 28 selfloop transitions, 8 changer transitions 14/52 dead transitions. [2024-06-27 20:00:09,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 52 transitions, 335 flow [2024-06-27 20:00:09,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-27 20:00:09,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-27 20:00:09,262 INFO L175 Difference]: Start difference. First operand has 73 places, 38 transitions, 207 flow. Second operand 11 states and 108 transitions. [2024-06-27 20:00:09,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 52 transitions, 335 flow [2024-06-27 20:00:09,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 52 transitions, 315 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:00:09,264 INFO L231 Difference]: Finished difference. Result has 68 places, 34 transitions, 187 flow [2024-06-27 20:00:09,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=187, PETRI_PLACES=68, PETRI_TRANSITIONS=34} [2024-06-27 20:00:09,265 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-27 20:00:09,265 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 34 transitions, 187 flow [2024-06-27 20:00:09,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:09,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:09,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:09,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 20:00:09,266 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:09,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1127295432, now seen corresponding path program 4 times [2024-06-27 20:00:09,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:09,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608876963] [2024-06-27 20:00:09,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:09,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:10,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:10,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608876963] [2024-06-27 20:00:10,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608876963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:10,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:10,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:10,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980670972] [2024-06-27 20:00:10,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:10,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:10,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:10,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:10,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:10,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:00:10,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 34 transitions, 187 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:10,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:10,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:00:10,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:10,751 INFO L124 PetriNetUnfolderBase]: 69/156 cut-off events. [2024-06-27 20:00:10,751 INFO L125 PetriNetUnfolderBase]: For 1636/1636 co-relation queries the response was YES. [2024-06-27 20:00:10,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 156 events. 69/156 cut-off events. For 1636/1636 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 451 event pairs, 17 based on Foata normal form. 6/161 useless extension candidates. Maximal degree in co-relation 500. Up to 75 conditions per place. [2024-06-27 20:00:10,752 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 23 selfloop transitions, 7 changer transitions 17/49 dead transitions. [2024-06-27 20:00:10,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 49 transitions, 315 flow [2024-06-27 20:00:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:10,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:10,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-27 20:00:10,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-27 20:00:10,753 INFO L175 Difference]: Start difference. First operand has 68 places, 34 transitions, 187 flow. Second operand 11 states and 109 transitions. [2024-06-27 20:00:10,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 49 transitions, 315 flow [2024-06-27 20:00:10,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 49 transitions, 291 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:10,754 INFO L231 Difference]: Finished difference. Result has 62 places, 28 transitions, 154 flow [2024-06-27 20:00:10,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=154, PETRI_PLACES=62, PETRI_TRANSITIONS=28} [2024-06-27 20:00:10,755 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-27 20:00:10,755 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 28 transitions, 154 flow [2024-06-27 20:00:10,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:10,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:10,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:10,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 20:00:10,755 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:10,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:10,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1539187556, now seen corresponding path program 5 times [2024-06-27 20:00:10,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:10,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259265077] [2024-06-27 20:00:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:10,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:11,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:11,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259265077] [2024-06-27 20:00:11,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259265077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:11,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:11,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:11,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653997307] [2024-06-27 20:00:11,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:11,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:11,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:11,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:11,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:11,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:00:11,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 28 transitions, 154 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:11,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:11,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:00:11,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:12,029 INFO L124 PetriNetUnfolderBase]: 55/126 cut-off events. [2024-06-27 20:00:12,029 INFO L125 PetriNetUnfolderBase]: For 1118/1118 co-relation queries the response was YES. [2024-06-27 20:00:12,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 126 events. 55/126 cut-off events. For 1118/1118 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 323 event pairs, 15 based on Foata normal form. 6/131 useless extension candidates. Maximal degree in co-relation 400. Up to 54 conditions per place. [2024-06-27 20:00:12,030 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 18 selfloop transitions, 9 changer transitions 12/41 dead transitions. [2024-06-27 20:00:12,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 41 transitions, 260 flow [2024-06-27 20:00:12,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:12,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:12,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-27 20:00:12,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31212121212121213 [2024-06-27 20:00:12,030 INFO L175 Difference]: Start difference. First operand has 62 places, 28 transitions, 154 flow. Second operand 11 states and 103 transitions. [2024-06-27 20:00:12,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 41 transitions, 260 flow [2024-06-27 20:00:12,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 41 transitions, 236 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:12,031 INFO L231 Difference]: Finished difference. Result has 53 places, 24 transitions, 127 flow [2024-06-27 20:00:12,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=127, PETRI_PLACES=53, PETRI_TRANSITIONS=24} [2024-06-27 20:00:12,032 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-27 20:00:12,032 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 24 transitions, 127 flow [2024-06-27 20:00:12,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:12,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:12,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:12,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 20:00:12,032 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:12,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2119175722, now seen corresponding path program 6 times [2024-06-27 20:00:12,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:12,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526056583] [2024-06-27 20:00:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:12,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:12,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:12,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526056583] [2024-06-27 20:00:12,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526056583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:12,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:12,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:12,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733448183] [2024-06-27 20:00:12,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:12,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:12,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:12,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:12,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:12,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:00:12,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 24 transitions, 127 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:12,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:12,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:00:12,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:13,118 INFO L124 PetriNetUnfolderBase]: 27/70 cut-off events. [2024-06-27 20:00:13,118 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-06-27 20:00:13,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 70 events. 27/70 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 200. Up to 24 conditions per place. [2024-06-27 20:00:13,118 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-06-27 20:00:13,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 32 transitions, 185 flow [2024-06-27 20:00:13,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-27 20:00:13,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2024-06-27 20:00:13,119 INFO L175 Difference]: Start difference. First operand has 53 places, 24 transitions, 127 flow. Second operand 11 states and 95 transitions. [2024-06-27 20:00:13,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 32 transitions, 185 flow [2024-06-27 20:00:13,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 32 transitions, 151 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-06-27 20:00:13,119 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-27 20:00:13,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-27 20:00:13,119 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-27 20:00:13,120 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-27 20:00:13,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:13,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 20:00:13,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 20:00:13,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 20:00:13,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 20:00:13,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 20:00:13,127 INFO L445 BasicCegarLoop]: Path program histogram: [23, 13, 11, 8, 6, 6, 6, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:13,129 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 20:00:13,130 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 20:00:13,132 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 20:00:13,132 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 20:00:13,133 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 08:00:13 BasicIcfg [2024-06-27 20:00:13,133 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 20:00:13,134 INFO L158 Benchmark]: Toolchain (without parser) took 107884.43ms. Allocated memory was 127.9MB in the beginning and 648.0MB in the end (delta: 520.1MB). Free memory was 89.9MB in the beginning and 507.3MB in the end (delta: -417.3MB). Peak memory consumption was 103.7MB. Max. memory is 16.1GB. [2024-06-27 20:00:13,134 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 127.9MB. Free memory is still 103.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:00:13,134 INFO L158 Benchmark]: Witness Parser took 0.09ms. Allocated memory is still 127.9MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:00:13,134 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.26ms. Allocated memory is still 127.9MB. Free memory was 89.3MB in the beginning and 56.8MB in the end (delta: 32.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-27 20:00:13,134 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.35ms. Allocated memory is still 127.9MB. Free memory was 56.8MB in the beginning and 54.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 20:00:13,135 INFO L158 Benchmark]: Boogie Preprocessor took 39.43ms. Allocated memory is still 127.9MB. Free memory was 54.3MB in the beginning and 51.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 20:00:13,135 INFO L158 Benchmark]: RCFGBuilder took 613.89ms. Allocated memory is still 127.9MB. Free memory was 51.1MB in the beginning and 53.8MB in the end (delta: -2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-06-27 20:00:13,136 INFO L158 Benchmark]: TraceAbstraction took 106694.54ms. Allocated memory was 127.9MB in the beginning and 648.0MB in the end (delta: 520.1MB). Free memory was 53.0MB in the beginning and 507.3MB in the end (delta: -454.3MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. [2024-06-27 20:00:13,136 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 127.9MB. Free memory is still 103.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.09ms. Allocated memory is still 127.9MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 496.26ms. Allocated memory is still 127.9MB. Free memory was 89.3MB in the beginning and 56.8MB in the end (delta: 32.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.35ms. Allocated memory is still 127.9MB. Free memory was 56.8MB in the beginning and 54.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.43ms. Allocated memory is still 127.9MB. Free memory was 54.3MB in the beginning and 51.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 613.89ms. Allocated memory is still 127.9MB. Free memory was 51.1MB in the beginning and 53.8MB in the end (delta: -2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 106694.54ms. Allocated memory was 127.9MB in the beginning and 648.0MB in the end (delta: 520.1MB). Free memory was 53.0MB in the beginning and 507.3MB in the end (delta: -454.3MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 815]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 816]: 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, 48 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: 106.6s, OverallIterations: 102, TraceHistogramMax: 1, PathProgramHistogramMax: 23, EmptinessCheckTime: 0.0s, AutomataDifference: 37.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6528 SdHoareTripleChecker+Valid, 21.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5478 mSDsluCounter, 3102 SdHoareTripleChecker+Invalid, 18.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2719 mSDsCounter, 1512 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37746 IncrementalHoareTripleChecker+Invalid, 39258 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1512 mSolverCounterUnsat, 383 mSDtfsCounter, 37746 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1131 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2337 ImplicationChecksByTransitivity, 28.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1294occurred in iteration=48, InterpolantAutomatonStates: 972, 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, 0.5s SatisfiabilityAnalysisTime, 67.9s InterpolantComputationTime, 1568 NumberOfCodeBlocks, 1568 NumberOfCodeBlocksAsserted, 102 NumberOfCheckSat, 1466 ConstructedInterpolants, 0 QuantifiedInterpolants, 63886 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 102 InterpolantComputations, 102 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! [2024-06-27 20:00:13,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE